Mobile app developers
Hire mobile app developers who plan past launch day
You interview every iOS, Android and React Native developer first. Their apps are live in the App Store and Google Play today.
What you are getting
4 things that decide this
- 01Senior engineers with apps live in the App Store and Google Play right now, not portfolio screenshots from a demo build.
- 02They plan for store review, OS updates and poor network conditions before the first screen gets designed.
- 03You interview every engineer yourself and can turn down anyone you are not sure about.
- 04The code, the app store accounts and the release process are yours, not held by us.
The two ways this usually goes wrong first
You can hire Hashlogics mobile app developers, iOS, Android or React Native, after interviewing each one, and they have apps live in both stores today. Reveel ships iOS and Android apps alongside Apple TV, Roku, Fire TV and Android TV. BrandLocator is live on Google Play, built in React Native with Expo.
A no-code tool gets an app to a demo fast, then hits a wall. No offline support, no background location, no way past an App Store rejection. A freelancer builds something that works on their phone and stalls in review, or disappears once the invoice is paid.
By the time an operator is searching for an app developer instead of a React Native developer, one of those has usually already happened. The fix is not a better coder. It is someone who has taken an app through review and watched an update break a live feature. That is what builds a real release process.
ExtraaJe, Shift Link and TankAware are three apps our engineers built and still support. Each pairs a mobile app for the people in the field with a web dashboard for the people managing them, on one backend.
Hire an Android developer, an iOS developer, or both
Need an Android developer? You get someone who knows Kotlin, Google Play's review rules and the long tail of Android devices your users actually carry. That matters most for field apps on cheaper phones, like the shift workers using Shift Link.
Need an iOS developer? You get someone who writes Swift where the app needs it and has been through App Store review more than once. Rejections usually come from privacy labels, sign-in rules and payments, and they plan for those before the first build.
Most clients want both platforms from one codebase. A React Native developer working with Expo covers iOS and Android together, and drops into Swift or Kotlin for the parts that need native code. Does your app lean hard on the camera, Bluetooth or background work? Then two native builds can be the better call, and you'll hear that on the first call.
What we check before writing a line of code
Store review, planned not survived
Apple and Google reject apps for reasons that have nothing to do with bugs: missing privacy disclosures, unclear account deletion, a login screen with no demo access. We build to their guidelines from the start, so review is a formality, not a gamble.
The OS update after this one
iOS and Android ship major updates every year that can break permissions, background tasks or push notifications overnight. We track beta releases for apps we maintain, so an update is a scheduled check, not a surprise support ticket.
Offline as the normal case
A warehouse, a job site or a moving vehicle rarely has full signal. Actions get saved on the device and sent when the connection returns, with a rule for what happens if two people changed the same record.
Native code only where it earns its cost
Camera, location and background tasks usually work fine in a shared codebase. Heavy graphics or deep hardware access do not, and knowing the difference before you build keeps the budget honest.
- BuildAgainst store guidelines from day one
- SubmitPrivacy disclosures and account deletion in place
- ReviewApple and Google check the whole app, not the code
- LiveStaged rollout, not a single release to everyone
- OS updateChecked against the beta before it ships to your users
Most vendors stop at 'Live'. The last box is where a two-person team with no maintenance plan runs out of road.
Apps in production, each with an operations dashboard behind it
Results & impact
What that discipline produced
70%
less manual compliance verification, Shift Link
40%
fewer manual errors, TankAware
“TankAware has revolutionized how we manage petroleum sites. The real-time data and automation have exceeded expectations.”
Blake Sutherland · President, Sutherland Excavating Ltd.
How hiring works
- 01
Tell us what the app needs to do
A free scoping call about who uses it, where, and what it replaces. If a simpler tool would serve you better, we say so before you commit to a build.
- 02
Meet the engineer
We put forward people who have carried an app through review and past an OS update. You interview them directly, not us on their behalf.
- 03
They build in your accounts
Your App Store Connect and Google Play accounts, your repository. Nothing about your app depends on access we control.
- 04
They stay on after launch
Store updates, OS changes and bug fixes under an agreed service level, or a documented handover if you'd rather run it yourself. The first 2 months of support and maintenance are free, with every build.
Stack
Mobile
- React Native
- Expo
- Swift
- Kotlin
- Push notifications
- Over-the-air updates
Behind it
- Supabase
- PostgreSQL
- Next.js
- AWS
Process
- Store review checklist
- OS beta tracking
- Staged rollout
- Offline queues
Tell us what the app has to survive
Store review, an OS update, a warehouse with no signal, or all three. You'll leave the call knowing what the build needs, and what a fixed-fee Blueprint would cover.
01Can I hire an Android app developer?+
Yes. You can hire one Android app developer who works in Kotlin, or a React Native developer who ships to Android and iOS from one codebase. You interview them first, and they release under your own Google Play developer account.
02Can I hire dedicated mobile app developers?+
Yes. Dedicated mobile app developers work only on your app and join your standups. They stay with it after launch, so store updates and OS changes are handled by people who know the code.
03Do I need a React Native developer or just a mobile app developer?+
You need someone who has shipped an app to both stores and kept it running afterward. Most business apps do not need a specific framework named in the brief. They need a working iOS and Android app, and React Native is usually how we deliver both from one codebase.
04Why did our app get rejected by the App Store?+
Rejections cluster around a small set of causes. Missing privacy disclosures, no way to delete an account in the app itself, or a login screen reviewers cannot get past without test credentials. We build to Apple's guidelines from the start, so review is not where a project stalls.
05Our last developer disappeared. Can someone take over the app?+
Yes. The first step is getting a build running from what exists and pushing a small update through your own store accounts. That tells us the real state of the code faster than reading it does.
06What happens when Apple or Google release a new OS version?+
For apps we maintain, we test against the beta before the public release and fix what it breaks ahead of your users hitting it. An update that quietly stops push notifications or background location working is the most common reason an app stops feeling maintained.
07Do you build the app, or the app and a dashboard to manage it?+
Usually both. ExtraaJe, Shift Link and TankAware each pair a mobile app for the field with a web dashboard for the office, sharing one backend. Some projects only need the mobile half, and that works too.
08Do I interview the mobile developers first?+
Yes. You interview every mobile developer before they start, against your own bar. If one isn't right, say so and we put forward someone else. If a mismatch only shows up once the build has started, we swap the engineer without restarting discovery, and your codebase and accounts stay put.
09What hours does the mobile team work, and how much overlap do we get?+
A fixed daily overlap with your working hours, agreed during scoping and held for the length of the build. Store submissions and release windows get scheduled inside that overlap too. A rejected build does not sit waiting for the next timezone to wake up.
10Who owns the App Store and Google Play developer accounts?+
You do. The apps publish under your Apple and Google developer accounts from the first release, and our engineers work in them as invited members. If you ever change teams, nothing has to be transferred back to you.
11How much does it cost to build a mobile app?+
The number of audiences and how much offline behaviour it needs decide most of the cost. A single-user connected app is a smaller build than a field app with an office dashboard and an admin view behind it. You start with a free scoping call. Then every build starts with a fixed-fee Blueprint. An engineer reads your real systems and writes the plan, with a fixed price for each milestone. The fee is credited in full against the build, and if the plan isn't one you'd act on, you don't pay for it.
