Mobile apps that pass store review first time
An app that gets rejected costs you a week and your credibility with your users. We build with the store guidelines in mind from the first screen — permissions justified in context, privacy declarations that match what the code actually does, and account deletion that works. One codebase serves iOS and Android unless there is a hard reason to split them.
Engagement
A scoped MVP is typically 6–10 weeks. Apps that need a native shell, background processing or App Store enterprise distribution are scoped individually.
What you get
Deliverables, not adjectives
This is what lands in your hands at the end. If something is missing from this list, it was not in scope — and we will say so before we start rather than after.
One TypeScript codebase across iOS and Android, or true native where the platform warrants it
Expo or bare React Native, with an EAS build pipeline producing signed artefacts from CI
Offline-first data layer with conflict resolution and background sync
Push notifications with real permission priming, not an immediate cold prompt
Biometric authentication and Keychain / Keystore secure storage
Store submission handled end to end, including privacy nutrition labels and account deletion
Crash and analytics instrumentation from day one, so you can see what real users hit
When to call us
The situations where this is the right conversation
If you recognise one of these, that is probably enough to justify a 30-minute call.
01
You have an idea and no idea what it costs
We scope a thin, shippable slice first — usually four to six screens — so you get real numbers from real work before committing to the full build.
02
Your current app is slow and nobody wants to touch it
We profile it, profile the API behind it, and tell you whether the fix is in the app or the backend. Frequently it is the backend, and we will say so rather than bill you to rewrite a fine client.
03
You need to publish weekly without an engineer
We set up a build pipeline with preview builds on every pull request, so QA happens on a real binary rather than in a slide.
04
You need it on devices your customers actually own
We test on a real device matrix — older Android in particular, which is where most of the field problems live — not just on the newest hardware.
How we build it
The tools we would reach for
Not a shopping list. These are what we would actually pick for this kind of work, and we will tell you if a different tool fits your constraints better.
- React Native
- Expo
- TypeScript
- Swift
- Kotlin
- Expo Router
- TanStack Query
- WatermelonDB
- Sentry
- Fastlane
Examples
The shape of work this usually turns into
Illustrative scenarios, kept anonymous. Specific case studies with client names and evidenced metrics appear on our work page as clients approve them.
Field service app with offline capture
Engineers work in basements and rural sites with no signal. Job sheets, photos and signatures sync when connectivity returns, with a visible queue and conflict handling. Cut failed captures to zero.
- React Native
- Offline-first
- Background sync
Two-factor authentication and secure messaging
A regulated client needed a compliant channel for sensitive documents. Biometric unlock, on-device encryption, expiring message links, and a full export for compliance requests.
- Biometrics
- Encrypted at rest
- Audit export
Retail loyalty app
Wallet passes, in-store QR redemption, and a push channel with segment targeting. Approved and released without a rejection cycle.
- Expo
- Wallet passes
- Segmented push
Questions
Mobile apps: what buyers ask
Straight answers, including where the answer is that you probably do not need this.
Cross-platform for the large majority of apps — one codebase, one set of bugs, roughly half the cost. We go native only when you genuinely need platform-specific capability or performance that a bridge cannot deliver.
In our experience: account deletion not working, privacy declarations that do not match the code, and demo credentials that have expired. We build all three correctly from the start, which is most of why we pass first time.
Yes, including App Store Connect and Google Play Console, the privacy nutrition labels, and the review response process. You keep developer account ownership.
Yes. We start with a short audit of the codebase, the build pipeline and the store history, then give you a straight answer on whether to continue or rebuild. We will tell you if it is not worth it.
Related
Often needed alongside this
Got a mobile apps project in mind?
Send us the problem and the constraint. You will get a written responsewithin one uk business day, uk hours, 9:00-18:00, monday to friday, and an honest view on whether we are the right fit.