What is a EULA for software? The clauses and examples every maker needs

An end-user license agreement (EULA) sets what your users can and can’t do with your software, and it’s the document standing between you and a costly dispute when something breaks.

Makers new to the software industry often treat this legal document as boilerplate to copy-paste at launch, never to look at again.

But a EULA is more than a box to check at launch: it sets the rules for what happens when a customer misuses your software, a feature fails, or a dispute arises.

With insights from Freemius founder and CEO Vova Feldman, this guide covers what a EULA is, the clauses every software product needs, and how those clauses play out in real disputes across plugins, SaaS, desktop apps, AI tools, and browser extensions.

This article is not legal advice. Legal requirements change across jurisdictions and over time. For situations where details matter, consult a legal expert.

TL;DR — EULA software license agreement: Do you need it and what should you include?

• A EULA is for distributed software (installed on a user’s device); SaaS products typically use Terms of Service instead.
• Every EULA needs six categories of clauses: licensing scope, ownership, payment/refunds, warranty disclaimers, support/termination, and compliance.
• Generic templates work as a starting point, but real disputes (agency licenses, discounted refunds, trial non-conversions) expose the gaps a boilerplate document won’t cover.
• Freemius generates a EULA automatically based on your product’s actual configuration, so the clauses match how you actually sell.
• You need a EULA if your product installs on a user’s device (WordPress plugins, desktop apps, browser extensions, mobile apps) or if your SaaS product ships any downloadable piece alongside the cloud service. Skip it if it’s pure cloud SaaS with nothing to install; use a Terms of Service instead.
• Your EULA is incomplete if it’s missing any of the six required clause categories.
• A generic template works as a starting point, but fails in real-world situations — agency license abuse, discounted refund requests, trial non-conversions are exactly where boilerplate language written for no product in particular breaks down.
• Skip the drafting entirely if you sell through Freemius: it generates a EULA automatically from your product’s actual configuration, so the clauses match your real refund policy, trial terms, and licensing model — no template, no law firm bill, no patching later.

What a EULA is and why your software needs one

A EULA is the digital contract between software makers, their products, and end users. It defines rights, responsibilities, and restrictions, and must be accepted before the product can be used.

Even though more than 50% of users spend fewer than 8 seconds reading EULAs, sellers must ensure all bases are covered. The EULA’s purpose is to define what happens when things go wrong, protecting software makers from liability, disputes, and scenarios where losses exceed the product’s price.

What software needs a EULA (and what doesn’t)

EULAs are for distributed software — products installed on a device that have an impact on that device. WordPress plugins and themes, desktop applications, browser extensions, mobile apps, and legacy CD-ROM software all need EULAs.

Because the user has direct access to the software itself, the agreement has to cover installation rights, modification limits, and resale restrictions.

SaaS products typically do not use EULAs. A cloud-hosted app that never touches the user’s device is usually governed by a Terms of Service, which covers the services you’re providing rather than a license to run code locally.

What are the risks of not having a EULA?

It’s far riskier to install software on a device than it is to use software that’s maintained in the cloud (like SaaS).

Even small, unassuming plugins built by solo software companies have the potential to cause unintentional damage. A software malfunction doesn’t need to be dramatic to create potential legal disputes — a single unhandled edge case is enough to expose you to legal risks you never priced in.

An extreme example: One of your customers runs an eCommerce store that processes millions of dollars a week. They install your plugin and it breaks their website, leading to zero sales for a day (or three).

Who is liable for these losses?

If you’ve written a specific clause related to a ‘website-breaking, worst-case scenario’ into your EULA, not you.

By stating that you are not liable for any losses caused by issues your plugin causes (like site downtime and sales losses), your ‘worst case’ will be refunding what the customer paid for the product.

Without that legal protection written down, you’re one unhappy customer away from legal action with no contractual ground to stand on.

Vova elaborates:

The primary purpose of an end-user license agreement is to set in stone what happens when sh*t hits the fan. It’s a legally binding contract between you — the software provider — and the end user to protect yourself from exposure, liabilities, getting sued, and so on.

The key clauses and sub-clauses every software EULA should include

While it’s impossible to list every clause and sub-clause here, we’ve listed the key components every EULA needs, along with their high-level objectives, to serve as a starting point for licensing software correctly from day one.

Real-world EULA examples for different software types

Different software types need different clauses. The table below is the quick-reference version; the deep-dives after it walk through the specific disputes that make each clause necessary.

The clauses above cover the baseline. In practice, a handful of situations recur often enough per platform to need their own attention.

WordPress plugins and themes

Plugin and theme licenses carry the risks that other software types don’t: agency-scale support load, secondhand license resale, lifetime license support creep, and marketplace bundling.

Agency-scale support load

For WordPress products, an agency typically buys a single multisite license to install your plugin or theme across every client site it manages. That’s good for revenue and bad for support load if your EULA doesn’t account for it.

An agency deploying your product on 100 sites can create a support problem if your EULA doesn’t define who is entitled to support. Without clear terms, you could end up fielding support requests from 100 end clients who aren’t your customers and didn’t purchase the product directly.

It’s still worth committing to support the agency itself, since they (or a freelancer acting on their behalf) are the party who agreed to your EULA and initiated the purchase.

Secondhand license resale

Most makers want a flat “no” on resale, and for good reason: a resold license creates a secondary market you don’t control, invites profiteering, and generates support tickets from people who never agreed to your EULA in the first place.

Theoretically, someone could purchase an unlimited multisite license for, say, $100 and resell that license for $5, rinse and repeat. If they have a skill for marketing, there’s a chance they could even make more money than you from your product.

While a reseller making more cash than you is unlikely, an increase in support load from people who purchase resold licenses isn’t. Here’s how we ensure our makers have measures in place to safeguard themselves:

Lifetime licenses

No solopreneur wants to sign up for lifetime support attached to a lifetime license. Products are discontinued for a range of legitimate reasons — the maker moves on, the market shifts, the code becomes unmaintainable — but none of that stops a customer from reaching out for help years after development has stopped.

If your product disappears from a user’s live site without warning, expect a support request regardless of what “lifetime” was ever meant to cover.

The disclaimer needs to separate the license from your obligation to maintain it. Here’s an excerpt from the EULA we generated for Code Snippets to protect them against the above examples:

Product bundles

Bundles raise a structural question generic EULA templates don’t answer: do you write one license per product, or one catch-all agreement for the whole bundle?

The refund question follows the same fork — if one product in a five-plugin bundle breaks, does the buyer get a partial refund for that product, or does the bundle’s discounted pricing mean refunds apply to the whole package or not at all?

Since bundles are already heavily discounted, refunding individual components turns into an administrative and financial drain that erodes a deal the buyer already got cheaply.

The cleaner approach is a separate “Bundled Offering Terms” clause that overrides your standard refund policy for anything sold as a bundle:

SaaS apps

Pure cloud SaaS runs on a Terms of Service, not a EULA, since there’s no local installation to license. But subscription mechanics still create the same disputes, and three scenarios expose the gap fastest: trial conversions, price changes, and any downloadable component riding along with the core product.

Trial-to-paid conversion refunds

A high-priced trial that auto-converts is where refund disputes concentrate. Take a $1,000 product with a seven-day free trial: the trial converts, the buyer is charged in full, and they request a refund claiming they never got a cancellation reminder — when in most cases they simply forgot.

The cost isn’t just the refunded revenue. Many processors don’t return their fee on a refunded transaction, so a refund through Stripe at a 3.5% rate leaves you $35 out of pocket on top of the sale you assumed was guaranteed.

Vova’s advice for high-priced trials is a partial refund minus the gateway fee rather than a full one — and stating that upfront in your terms means support isn’t negotiating the policy case by case.

Price change disputes

Price changes create two recurring disputes worth writing terms for in advance.

1. A buyer purchases the day before a Black Friday Cyber Monday sale, discovers the price dropped 50% the next day, and asks for the difference back. Extending goodwill here (matching the sale price) tends to build more loyalty than it costs.
2. A customer on a $100 subscription for five years sees the price rise to $200, their card on file expires, and their subscription lapses even though they’re still an active user.

Neither case has one universally right answer, but your terms need to state your policy on both, rather than leaving it to whoever answers the ticket that day.

Downloadable components within a SaaS product

If your SaaS product ships a downloadable piece — a desktop companion app for offline access, an Electron client, a self-hosted deployment tier — that component still needs its own licensing terms.

Cover installation rights, activation limits, and the same warranty disclaimers a standalone desktop app would carry, nested inside your broader Terms of Service rather than left uncovered because the core product is cloud-based.

Desktop applications

Desktop software carries the highest exposure to reverse engineering and unauthorized redistribution, since the full application runs on hardware you don’t control. Three clauses do most of the protective work: licensing restrictions, discount-tier refund limits, and activation caps.

Reverse engineering and redistribution

The licensing clause needs explicit language, not implied restriction. Prohibit decompiling, mirroring the software on another server, and bundling it into another product or service without permission — a license that doesn’t name these directly leaves room for a user to argue they were never forbidden.

Discount-tier refund limits

Desktop licenses are often sold as one-time purchases during sales events, which makes discount-tier refund caps matter more here than on subscription products.

Without a clause capping money-back guarantees at specific thresholds — no refunds on purchases discounted over 40%, for example — you’re exposed to a wave of refund requests from buyers who bought the license as a means to an end rather than a long-term tool, particularly around events like Black Friday Cyber Monday.

Device-based activation limits

Activation limits tied to device count do the enforcement work that a plugin’s site-based licensing handles differently. Set the limit explicitly and state what happens when a user tries to activate beyond it, so the license itself — not just goodwill — is what stops unauthorized installs.

AI-powered tools

AI tools introduce a disclosure problem older software categories didn’t have to solve: most of them call a third-party API behind the scenes, and users don’t always know it.

Third-party API disclosure

Let’s say a product is using a third-party API (such as a GPT) behind the scenes for some trivial action. For whatever reason, the product maker overlooks the fact they need to inform end-users that data is being sent to a third party.

Now, imagine a rather scatterbrained European customer mistakenly sends personal information (like credit card details) using the product. Realistically, if there’s no protection in the EULA, the user can sue the software creator for sharing personal information with a third party, which is against GDPR.

In theory, if these and similar clauses aren’t written into your EULA, the agreement or legal contract can be invalidated if an end-user or legal entity decides to sue the software provider.

For AI tools specifically, the terms need to disclose what data reaches third-party models and under what conditions, rather than assuming users understand the product is calling an external API at all.

Boilerplate revision clause

A revision clause matters more for AI tools than almost anywhere else, since the underlying APIs and their data-handling terms change faster than most makers can track.

Building in the right to update your terms as those upstream changes happen means you can fix a disclosure gap before it becomes a legal one, rather than after a user notices.

Browser extensions

Extensions run inside a user’s browser with permissions to read and modify page content, which makes disclosure and update mechanics the two areas standard EULA language tends to miss.

Data access scope disclosure

State plainly what the extension can see and do. Don’t rely on the browser store’s own permission prompt to cover terms your EULA hasn’t stated directly — the store prompt tells a user what technical access you’re requesting, not what you’re doing with the data once you have it.

Regional refund compliance

Because extensions distribute globally through a single store listing, regional consumer protection rules apply the moment you have European users. The EU’s cooling-off period lets a buyer request a full refund within 14 days of purchase if they haven’t yet used the product, regardless of what your standard refund window states elsewhere in the agreement.

If there is no rule to counteract the above, European buyers could theoretically contact the seller for full refunds and threaten to sue if none are forthcoming.

This excerpt covers the above:

Remote termination and update delivery

Update delivery through the extension store changes how a termination clause should read. Disabling paid features remotely is standard practice, but the extension itself often can’t be “uninstalled” by you the way a desktop license key can be revoked — the termination clause needs to describe feature deactivation specifically, not removal.

How to create a EULA for your software

Three paths get you to a usable EULA: hire a law firm, use AI drafting tools, or adapt what a peer has already built. Each works, but each comes with a different cost and a different failure mode if your business outgrows it.

Law firm or generic template?

Tech-centric law firms build from template libraries that improve over time, refined through new legal cases and regulatory changes as they come in. Vova explains the trade-off:

Most countries have established, leading law firms with lawyers from a variety of backgrounds catering to the nuances of the tech space. But just like software solopreneurs and SMBs, these firms won’t have offices/subsidiaries in every country and will therefore be unable to ensure strict compliance with each country a product maker is selling in.

A firm’s template is developed from a wealth of real use cases, covers the major clauses specific to your product niche, and includes branching options you can adjust as your product changes.

That puts it ahead of a generic template pulled off the internet, but it comes at a cost, and even a good firm won’t always be current on the latest software business models or the specific constraints of running a small team.

Our two cents:

If you can afford a law firm, then we say: by all means do it! The accrued knowledge and professional expertise will remove most of the legal admin from your shoulders.

Before you commit, however, consult with peers and research to ensure the firm you select has a successful track record and is respected in the tech and software ecosystems.

If budget is the constraint, a generic template can work as a starting point, but we recommend treating it as a first draft rather than a finished document.

AI and automation tools

Purpose-built legal AI tools and EULA-specific GPTs can help with basic drafting and initial jargon, and they’re a reasonable way to get a first pass down on paper.

While these tools are helpful as a start, we don’t advise relying too heavily on AI and automation as your business grows. Eventually, your company will reach a certain level of maturity, accumulating years of use cases (and edge cases). When this time comes, we recommend seeking legal assistance because (as Vova warns):

The more you have, the more you stand to lose.

And if your EULAs aren’t periodically updated and watertight, you may end up on the losing side more often than you should.

However, if legal firms and GPTs don’t gel with the path you want to take right now, why not…

Borrowing from a peer’s EULA

Asking another maker in your space if you can use their EULA as a starting point is often the fastest, most practical route, especially for indie software developers without the time or budget for legal counsel early on.

That said, it’s not a matter of cut and paste. Vova is direct about the risk:

You can’t simply take an existing EULA and change the titles and product names. There’s a risk of copyright issues (even though exposure is small for solopreneurs and SMBs), and it’s the wise course of action to get things right from the beginning, instead of having to patch up holes down the line.

If you have the time to research competitors’ EULAs for inspiration but not the confidence to adapt one yourself, the better move is working with a lawyer and handing them your competitive research directly — it sets clearer expectations than starting from a blank page.

Freemius generates your EULA automatically

If none of the three paths above fit — too costly, too much AI-drafting risk, no peer with able EULA to adapt — there’s a fourth option: let your platform generate it for you.

Freemius is a merchant of record, which means it already sits between you and every transaction: payments, subscriptions, refunds, tax compliance. A EULA generated from that same infrastructure reflects how you actually sell, rather than a generic template you’ll have to patch later.

Vova explains:

To remove much of the legwork, we generate EULAs for our makers based on their specific product configurations, such as refund policies, plan settings, free trials, lifetime licenses, subscriptions, etc.

The document comes styled as an official legal agreement, branded with your product icon, with a built-in option to print it, so it reads as a real EULA, because it is one, not a placeholder waiting to be replaced.

Freemius also builds in direct links to specific sections, which turns the comprehensive EULA from a document you publish once into a tool you actually use in support conversations:

• Subscriptions terms summary: https://freemius.com/terms/<productID>/<productSlug>/legal/eula/#subscriptions_summary
• Refund policy summary: https://freemius.com/terms/<productID>/<productSlug>/legal/eula/#refund_policy_summary
• Full refund policy: https://freemius.com/terms/<productID>/<productSlug>/legal/eula#refund_policy

If a customer contacts you asking for a renewal refund, you can point directly to the subscriptions terms summary link instead of re-explaining your policy from scratch — the clause they agreed to at purchase is one click away, not buried in a wall of legal text they’ll never scroll to.

Start protecting your software with a clear, defensible EULA

Software product EULAs stand between you and undue refunds, messy disputes, and worst-case scenarios. Commit to revising it consistently, and you commit to safeguarding the product and business you’ve poured your blood, sweat, and tears into.

A EULA earns its place the day something goes wrong, not the day you publish it. Before you launch (or if your current one predates your last three product decisions):

1. Confirm your product type needs a EULA rather than a Terms of Service, and check whether any downloadable component needs its own licensing terms even if the core product is SaaS
2. Audit your refund and trial clauses against your actual pricing — a $1,000 product with a seven-day trial needs different protection than a $20 plugin
3. Add a boilerplate revision clause if you don’t have one, especially if your product touches third-party APIs or handles any user data
4. Revisit it after every dispute, not once a year. The maker community‘s edge case today is your blind spot tomorrow.

Freemius generates a EULA automatically based on your actual product configuration — refund policy, trial settings, subscription terms, lifetime licenses — so the document matches how you really sell instead of a generic template you’ll have to patch later.

If you’d like to chat about drafting an initial EULA or pick our brains about more use cases, schedule a call with Vova.

FAQ — EULA for software

What does a EULA do?

A EULA defines what a user can and can’t do with your software, and what happens when something goes wrong. It sets licensing scope, ownership, refund terms, and liability limits, turning a potential dispute into a resolution the agreement already covers, rather than a negotiation from zero.

Is a EULA free?

Writing your own EULA costs nothing but your time, though a template alone rarely covers the disputes specific to your product. Freemius generates a EULA automatically as part of using the platform, built from your actual refund policy, trial settings, and licensing model — no separate cost or law firm fee required.

Who needs a EULA?

Anyone distributing software that installs on a user’s device: WordPress plugins and themes, desktop applications, browser extensions, and mobile apps. Pure cloud SaaS with nothing to install typically uses a Terms of Service instead, though any downloadable component (a desktop companion app, a self-hosted deployment tier) still needs EULA-style terms of its own.

What happens if you don’t accept a EULA?

You can’t legally use the software. Acceptance is usually required before installation or first use completes, which is what makes the EULA enforceable — a user who never accepted it hasn’t agreed to any of the terms inside it, including the restrictions that protect the software maker.

How do you create a EULA?

Three common paths: hire a law firm for a tailored template, use AI drafting tools for a first pass, or adapt a EULA from a peer in your space (never by copy-pasting without adjustment — that carries its own copyright risk).

Freemius offers a fourth option: it generates a EULA automatically from your product’s actual configuration, so the clauses already match how you sell.

Do people read EULAs?

Rarely, and not for long — more than half of users spend under eight seconds on one before accepting. That’s exactly why the document has to do its protective work without relying on the user’s attention: it needs to hold up in a dispute regardless of whether anyone read it at the time.

Is it illegal to violate a EULA?

Violating a EULA is typically a breach of contract rather than a criminal matter, which means the software maker’s recourse is civil — terminating the license, pursuing damages, or seeking an injunction, depending on what the agreement specifies. Some violations (like unauthorized redistribution of copyrighted code) can also raise separate copyright issues beyond the contract itself.

Do EULAs hold up in court?

Generally yes, provided the agreement was properly presented and accepted, and its terms don’t conflict with local law. Vague language or missing clauses are the more common failure point — an agreement that never addresses a specific dispute scenario doesn’t protect you in that scenario, regardless of whether the rest of the document is enforceable.

Is a EULA mandatory?

Not by law in most jurisdictions, but it’s effectively mandatory in practice for any distributed software, since it’s the only thing standing between you and unlimited liability if your product causes damage. Skipping it doesn’t remove the risk — it just means you’re facing that risk with no contractual protection in place.

What’s the difference between an SLA and a EULA?

A Service Level Agreement (SLA) sets performance commitments — uptime guarantees, response times, support SLAs — typically for hosted or SaaS products. A EULA governs the license itself: what a user can do with the software, ownership, and liability. Many SaaS products use both: an SLA for service commitments, and either a ToS or a EULA-style licensing clause for any installed component.

What’s the difference between an AUP and a EULA?

An Acceptable Use Policy (AUP) restricts how a product can be used — prohibiting illegal, harmful, or abusive activity through the software. A EULA covers the broader license: installation rights, ownership, refunds, and liability. Many products include both, with the AUP either folded into the EULA or referenced as a separate linked policy.