How to Hire a Mobile App Developer: Questions to Ask Before You Sign

Hiring your first app developer feels a lot like hiring a contractor to build a house you can’t inspect. You can see the finished screens, but you can’t easily see whether the foundations are solid, whether you own the blueprints, or whether the builder will still answer the phone in a year.

The good news: most hiring mistakes are avoidable with a clear scope, the right questions and a contract that protects you. This guide gives you all 3, written for founders and business owners who are not developers themselves.

Start with a 1-page scope, not a job post

Developers can only quote accurately against something written down. Before you talk to anyone, write a short brief that covers:

• The problem and the user. Who opens the app, and what do they need to get done?
• Platforms. iOS, Android or both at launch. If you’re unsure, read our guide to native vs cross-platform app development.
• The 5–10 must-have features for version 1, and a separate “later” list.
• Integrations. Payments, maps, logins, your existing website or CRM.
• Budget range and deadline. Even a rough range saves everyone time.

If you want a more formal version, our outline for writing a software requirements document walks through each section. And if you’re still testing the idea, keep version 1 deliberately small; the MVP development guide explains how to cut scope without cutting value.

Key takeaway: The quality of the quotes you get depends on the quality of the brief you send. A vague brief produces quotes you can’t compare.

Freelancer, agency or in-house: which fits

There are 3 common ways to hire, and each suits a different stage.

For a deeper look at the trade-offs, see IT outsourcing vs in-house. Prices vary widely by location, experience and app complexity, so get at least 3 quotes against the same brief. Our breakdown of how much it costs to build an app explains what drives those numbers.

If you hire an individual, decide early whether they’re a contractor or an employee. The IRS looks at behavioral control, financial control and the type of relationship, and no single factor decides it. Our guide to 1099 contractor vs W-2 employee covers the details.

Questions to ask about experience

Portfolios are easy to dress up. These questions get to what a developer has actually shipped.

1. Which apps in the App Store or Google Play did you build, and what exactly was your part? Download them. Check the reviews, the last update date and how the app feels.
2. Have you built something similar to my app? Similar in function (bookings, payments, real-time chat), not just similar in industry.
3. Which framework would you use for this, and why? A good answer weighs your needs, not just their favorite tool. Compare their reasoning with our Flutter vs React Native breakdown.
4. Can I speak with 2 past clients? Ask those clients whether the project hit its budget and what happened after launch.
5. Who will actually write the code? With agencies, the person on the sales call is often not the person building your app.

Questions to ask about process and quality

How a developer works matters as much as what they’ve built.

• How do you break the project into milestones? You want working builds every 1–2 weeks, not one big reveal at the end.
• How will I test progress? Expect access to test builds through TestFlight on iOS or a testing track in Google Play Console.
• How do you test? Ask about automated tests, manual testing on real devices and a pre-launch checklist. Our pre-launch software QA checklist shows what good looks like.
• Where does the code live? It should be in a Git repository you own or can access at any time.
• What do you need from me each week? Fast feedback from you keeps the project on schedule.
• How do you handle app store review? Experienced developers know Apple’s and Google’s review rules and plan for them.

One practical detail many founders miss: Google requires new personal developer accounts (created after November 13, 2023) to run a closed test with at least 12 testers for 14 days in a row before applying for production access. Organization accounts are not subject to this rule. A developer who knows this will plan for it in the timeline.

Questions to ask about ownership and after launch

These are the questions that protect you if the relationship ends.

• Will the app be published under my developer accounts? It should be. Apple’s Developer Program costs $99 per year and Google Play charges a one-time $25 registration fee, so there’s no reason to let a developer publish under their own account.
• Will I own the source code, designs and all IP on final payment?
• Which third-party services, libraries and paid tools will the app depend on, and who pays for them?
• What does maintenance cost? Apps need updates for new iOS and Android versions, security fixes and store policy changes.
• How long do you guarantee fixes for bugs found after launch?
• What does the handover include? Documentation, credentials, build instructions and a walkthrough.

Red flags to walk away from

Some warning signs are worth ending the conversation over:

• A fixed price before they’ve asked you questions. They’re guessing.
• No apps you can download or no clients you can call.
• Requests to publish under their own developer account or to keep the code in a repository you can’t access.
• Large upfront payments with no milestones tied to working software.
• “Everything is possible, nothing is hard.” Good developers push back on scope.
• Vague answers about who builds the app or frequent swaps of team members.
• No mention of testing, security or maintenance.

Contract terms that protect you

A good contract turns your interview answers into commitments. Make sure yours covers these points:

The IP clause deserves special attention. Under US copyright law, a “work made for hire” by a contractor covers only certain listed categories of commissioned work, and custom app code generally doesn’t fit neatly into them. That’s why contracts with freelancers and agencies usually include an explicit written assignment of copyright, rather than relying on a “work for hire” label alone. Have a lawyer review the agreement before you sign. This is not legal advice.

Where to start: a 7-step hiring plan

1. Write your 1-page scope and must-have feature list.
2. Create your own Apple and Google developer accounts and a Git repository in your company’s name.
3. Shortlist 3–5 candidates from referrals, your local network or vetted platforms. Directories of established development firms in your state can help you build the list.
4. Run the interview questions above and score each candidate on the same criteria.
5. Call 2 references for each finalist.
6. Start with a paid discovery phase or small first milestone to test how you work together.
7. Sign the contract with IP assignment, milestones and handover terms in place, then kick off.

Conclusion

Hiring a mobile app developer isn’t about finding the cheapest quote or the flashiest portfolio. It’s about finding someone who asks good questions, ships working builds often, and leaves you owning everything when the work is done. Write the scope, ask the hard questions, and get the ownership terms in writing before a single line of code is written.

Sources

• Apple Developer: Program enrollment — Apple Developer Program annual fee and enrollment requirements
• Google Play Console Help: Get started with Play Console — one-time $25 registration fee
• Google Play Console Help: App testing requirements for new personal developer accounts — 12 testers for 14 days before production access
• IRS: Independent contractor or employee — behavioral, financial and relationship factors
• 17 U.S. Code § 101 (Cornell LII) — definition of “work made for hire” and its commissioned-work categories