Mobile app development company checklist: 15 questions before signing

Before signing with a mobile app development company, confirm who builds the app, who owns the code and store accounts, how releases reach the App Store and Google Play, how data is secured, and what happens after launch. A portfolio shows what a team has built. These questions show how they will build yours.

The checklist below is written for founders and product owners comparing proposals. It reflects the questions that matter in real release and handover work, including ImadDhin's public case study and the recurring store-release problems covered elsewhere on this blog. It is not a ranking of vendors.

Why choosing an app company is hard

Most proposals look similar at the level buyers usually compare: a list of screens, a technology stack, a timeline and a price. The differences that decide whether the project succeeds are less visible. Who holds the Apple and Google developer accounts? Is the backend documented well enough for another team to run it? Has the vendor shipped through app review many times, or mostly delivered builds that someone else had to publish?

Mobile adds constraints that web projects do not have. Every release goes through store review. Old app versions stay on users' phones for months, so the backend must support them. Push notifications, in-app purchases, background location and camera access all carry platform rules. A vendor who treats these as details will discover them late, on your budget.

What buyers often get wrong

• Comparing hourly rates instead of total cost to a working release, including store submission, backend and fixes after review.
• Letting the vendor create the developer accounts, cloud projects and domains under their own organization.
• Accepting a demo on the vendor's phone as proof of delivery, rather than a build published to your own store listing.
• Skipping the question of what happens after launch, when crash reports, operating system updates and review rejections arrive.
• Choosing a stack because it is fashionable, not because it fits the team that will maintain the app.

How to use the 15 questions

Use these in a call or send them in writing. Good vendors answer them specifically and without defensiveness. Vague answers are information too.

Questions 1-4: team and ownership

1. Who will actually build the app?

Ask for the names and roles of the people doing the work, not the sales team. Ask whether any part is subcontracted, and to whom. A founder-led studio, an agency and a marketplace freelancer can all do good work, but you should know which one you are hiring.

2. Who owns the code, and where does it live?

The repository should be in an organization you own or be transferred to you on a defined schedule. Confirm that you receive the full source, build configuration and infrastructure definitions, not only compiled builds.

3. Whose developer and cloud accounts will be used?

Apple Developer, Google Play Console, Firebase or other cloud projects, domains and payment accounts should belong to your company, with the vendor invited as a team member. Moving an app between store accounts later is possible but slow and disruptive.

4. What happens if we part ways mid-project?

Ask how handover works at any point: code, credentials, documentation and a short walkthrough. The answer reveals whether the vendor builds for you or for dependency.

Questions 5-9: product and architecture

5. Why this stack for this app?

Native, Flutter, React Native and low-code tools such as FlutterFlow all have legitimate uses. The right answer references your requirements: platform features, offline needs, team skills, time to market and who maintains the app later. The wrong answer is that this is what the vendor always uses.

6. What does the backend look like, and who runs it?

Ask where data is stored, how authentication works, how server logic is deployed and how the backend is monitored. Ask whether the same backend will serve a web app later, because that affects how accounts and permissions are designed.

7. How is data secured?

Ask how access rules are enforced on the server or database, not only in the app. Ask where secrets live, since anything bundled into a mobile app can be extracted. Ask how personal data is handled and whether any regulatory requirements in your markets have been considered, with legal review where needed.

8. How will you handle old app versions?

Users do not all update. Ask how the backend stays compatible with older versions, and whether there is a mechanism to require an update when a breaking change is unavoidable.

9. What happens when the network is poor?

Ask which screens work offline or on weak connections, how writes are retried, and what the user sees when something fails. This one question separates teams that have supported real users from teams that have only demoed on office Wi-Fi.

Questions 10-12: release and operations

10. Who submits to the App Store and Google Play?

Ask who prepares listings, screenshots, privacy details and review notes, and who responds to rejections. Ask how many times the team has taken an app through review, and what the most recent rejection was about.

11. How are builds produced and signed?

Ask whether builds come from a repeatable pipeline or from one developer's laptop. Signing keys and store API credentials should be stored securely under your control and documented.

12. What monitoring is in place at launch?

Crash reporting, basic analytics and backend error logging should be part of the first release. Without them, the first sign of a problem is a one-star review.

Questions 13-15: commercial terms

13. What exactly is included in the price?

Confirm whether store submission, backend work, design, testing on real devices and fixes after the first review are included. Ask how changes are handled and priced.

14. What does support look like after launch?

Ask about a warranty period for defects, response times, and the cost of ongoing maintenance such as operating system updates and dependency upgrades. Mobile apps need regular attention even when no features change.

15. What are the running costs?

Ask for a list of recurring costs and their drivers: developer program fees, backend hosting, database usage, push notifications, email, AI model calls if relevant, and monitoring tools. You are paying these, so you should see them before you sign.

Implementation considerations

Ask for answers in writing, and fold the important ones into the contract: account ownership, code transfer, included scope and support terms. A friendly answer in a call is not enforceable.

If you cannot judge the technical answers yourself, ask each vendor the same questions and compare how specific they are. Specificity is a reasonable proxy for experience. You can also ask for a short paid discovery phase before committing to the full build.

Plan the store accounts early. Organization enrollment with Apple and Google requires company verification that can take time, and it is far easier to start with the right accounts than to migrate later.

Trade-offs

A larger agency offers more capacity and continuity if people leave, at the cost of more layers between you and the people writing code. A smaller or founder-led studio usually means direct access to the engineer making decisions, with less spare capacity. A freelancer can be excellent for well-defined work but carries more key-person risk.

Cross-platform frameworks reduce the cost of supporting both platforms, while native development can be the better choice for apps that lean heavily on platform-specific features. Low-code tools can shorten the path to a first version, provided the team knows when to add custom code or export.

Lessons from ImadDhin work

The public FoCoCo case study covers a Flutter phone app, a Next.js web app, a Firebase backend, real-time voice and memberships. As an implementation-level observation, the questions above that mattered most were not about screens. They were about one identity across the phone app and the web app, so an account and membership created on one platform work on the other, and about store release and backend rules that had to be right before the product felt finished.

The FlutterFlow App Store post on this blog documents a pattern that questions 3, 10 and 11 are designed to catch: an app that is visually complete but cannot reach TestFlight because of bundle identifiers, store API key permissions or missing privacy strings. Those problems are release engineering, and they belong in the vendor conversation before signing.

Common mistakes to test for

• Ask to see a store listing the vendor published, and confirm whose account it sits under.
• Ask the vendor to explain one past review rejection and how it was resolved.
• Check whether the proposal lists running costs separately from the build price.
• Confirm in writing that developer accounts and cloud projects will be created under your organization.
• Ask for a sample of handover documentation from a previous project, with client details removed.

When a simpler option is better

If you are still testing whether people want the product, you may not need a mobile app at all yet. A responsive web app or a clickable prototype can validate demand at a fraction of the effort, and store review is not in the way when you want to change something daily.

If you need a small internal tool for a known group of users, a low-code or web-based approach may be enough. Hire a mobile app development company when you need store presence, device features or an experience that genuinely benefits from being native.

Talk to the people who would build it

Take these questions into every vendor conversation, including this one. If your project involves FlutterFlow, see how ImadDhin approaches FlutterFlow builds and rescues; for broader scope, read about engagements or send a project brief. The fastest next step is a 30-minute call where you can ask all 15 questions directly.