Tattoo Artist BooksAn app development contract should settle three things above all: who owns the source code and intellectual property, what exactly is in scope and how it is delivered, and how payment is tied to milestones. If one is missing, you may finish the app and still not fully own it.
This article is general information, not legal advice. Have a lawyer read your contract before you sign; projects and countries differ.
Source code ownership: why it matters
Source code ownership decides whether you can later work with another developer. If you do not own the code, you depend on the original team for every change; if they close, raise prices or disappear, you are stuck.
Look for these in the contract:
- Who owns the whole deliverable (app, backend, design files)?
- When does ownership transfer: on full payment or in stages?
- What license applies to the developer's pre-existing tools and libraries reused in your project?
- Do open-source licenses in the code restrict how you can use it?
App IP rights: is a written assignment needed?
Software is generally protected by copyright, and by default the author, often the developer or their company, holds the rights. How rights pass to you differs by country. In the US, "work made for hire" rules depend on circumstances, and independent contractors commonly need an explicit written assignment. In EU countries like Germany, copyright law ties usage rights to the purpose of the agreement. Either way, "I paid, so it is mine" may not be enough. The contract should state which rights transfer, whether the transfer is exclusive, and any limits on time or territory. Ask a lawyer in your jurisdiction.
Scope and delivery clauses
Most disputes start with "was that included?". To prevent them:
- Feature list: Screens and functions listed one by one.
- Exclusions: Admin panel, extra languages, another platform: say explicitly whether each is in or out.
- Timeline: Milestones, estimated dates and what happens in case of delay.
- Change management: How out-of-scope requests get a written quote.
- Acceptance criteria: What must work for the job to count as done, and how long the testing window is.
For the usual sequence of stages, see the app development process.
Payment plan
Paying everything upfront or everything at delivery is risky for one side or the other. A balanced approach ties payments to milestones: proposal approval, design delivery, development builds, release. Each payment should match a deliverable. Invoicing, VAT or sales tax treatment also belongs in the contract; confirm with your accountant.
Confidentiality and non-compete
If your idea is not public yet, sign an NDA before the first detailed discussion, and include a confidentiality clause in the contract covering the idea, customer data and trade secrets. For the broader picture, see how to protect an app idea. A non-compete clause (the developer not building the same product for others) can be negotiated, but enforceability varies a lot by country, so get legal advice.
Accounts and data
- Store accounts: Apple Developer and Google Play accounts should be in your name. Moving an app out of someone else's account later is painful.
- Domain and cloud accounts: Server, database and domain registrations should be under your ownership too.
- Personal data: If the app collects user data, GDPR (or local equivalents) responsibilities between the parties should be written down. See app privacy and GDPR basics.
After launch: maintenance and warranty
Bug-fix periods, warranty and a maintenance plan belong in the contract. "Support after launch" alone is too vague: state the scope, response time and pricing. We cover this in app maintenance and updates.
Software agreement checklist
| Clause | Question to ask |
|---|---|
| Source code | All of it, on what terms, to whom? |
| Copyright / license | Written assignment, scope, duration? |
| Scope | Inclusions and exclusions written down? |
| Timeline | Milestones, dates, delay clause? |
| Payment | Tied to milestones, invoicing clear? |
| Confidentiality | NDA and confidentiality clause? |
| Accounts | Store and cloud accounts in whose name? |
| Support | Warranty and maintenance scope and duration? |
| Termination | How is the project handed over if we part? |
Practical steps before you sign
- Match proposal and contract: Everything discussed in the proposal should appear in the contract or its annexes. A promise made verbally and never written down is hard to rely on in a dispute.
- Ask for annexes: Screen list, timeline and technical specification should be signed as attachments.
- Have a lawyer read the draft: Especially the IP assignment, liability cap and termination clauses.
- Verify the parties: Is the other side's company name, tax ID and signing authority correct?
- Keep the signed copy: Archive all correspondence, proposals and delivery records in one folder.
What a contract cannot fix on its own
A well-written contract does not replace a good working relationship. It protects you in a dispute but does not run the project. That is why regular communication, staged delivery and written approval of each stage matter as much as the contract. If one side constantly has to refer to the contract, something went wrong earlier in the process. Treat it as a safety net: you hope never to use it, but its existence keeps both sides honest.
Frequently asked questions
What should a software development agreement include?
Parties, scope, delivery and acceptance, timeline, payment plan, source code and IP transfer, confidentiality, maintenance and support, termination and dispute resolution. The table above is a starting point.
Am I entitled to the source code?
Not automatically. Unless the contract says so, the right to receive the code can be disputed, so write source code delivery and transfer in explicitly.
Can I write the contract myself?
You can draft a basic version, but having a lawyer review it before signing usually costs less than a dispute later.
Can the developer build the same app for someone else?
Without a confidentiality or non-compete clause, a general idea may be free for anyone to build. Copying your original code or design is different and may infringe copyright. Ask a lawyer.
In OdenaVerse's turnkey model, all source code belongs to the customer, scope and exclusions are written in the proposal, and store publishing uses the customer's own Apple and Google accounts. We can sign an NDA before the first call if you want. If you are comparing options, start with how to choose an app development company or email us.