krytohub

Mobile apps people keep on their phone

iOS, Android and cross-platform builds for companies whose customers or field teams work from a phone. Shipped through the stores, instrumented, and maintained after launch.

See mobile work
iOS + AndroidOne team, both platforms
6 wksTo a build on your phone
App screen 1
App screen 2
Apps we have shipped
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Dispatch
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Field service
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Patient portal
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Assessment
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Wallet
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Booking
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Inventory
What we build

Six kinds of mobile project

Most work falls into one of these. If yours does not, say so and we will tell you whether we are the right team.

Native or cross-platform

We will tell you which one you need

The answer depends on hardware access, team size and how long the app has to live. Here is how we decide, before anyone commits to a stack.

ConsiderationNative (Swift / Kotlin)Cross-platform
Hardware accessFull and immediate, including new OS features on day one.Good for common sensors; plugins needed for anything unusual.
Cost for both platformsTwo codebases, so roughly 1.6 to 1.8x.One codebase covers both, with platform-specific edges.
UI fidelityExactly the platform conventions, no compromise.Close, and consistent across platforms by design.
Team you need afteriOS and Android skills in-house or on retainer.One skill set maintains both apps.
Best fitLong-lived flagship apps, heavy device use, games.Business apps, MVPs, companion apps, tight budgets.
What we usually pickWhen hardware or platform features drive the product.For most business and field apps, Flutter or React Native.

From kickoff to the app store

Store review, device testing and release management are part of the price, not an afterthought.

01DiscoveryScope, constraints and a fixed price agreed before the build.Weeks 1-2
02DesignFlows and screens, prototyped on a real device early.Weeks 2-4
03BuildTwo-week increments, installable build at the end of each.Weeks 4-12
04Test & releaseDevice matrix, beta track, store submission and review.Weeks 12-14
05SupportCrash monitoring, OS upgrades and a named engineer.Ongoing
Stack

What we build with

Cross-platform
FlutterReact NativeDartTypeScript
Native
Swift / SwiftUIKotlin / ComposeXcodeAndroid Studio
Backend
NodePythonPostgreSQLFirebase
Release & ops
FastlaneTestFlightPlay ConsoleSentry
Questions

Mobile projects, asked and answered

How long does a mobile app take?

A focused first version is usually 10 to 14 weeks from kickoff to store approval, with an installable build on your phone from week six.

Do you handle app store submission?

Yes. Store accounts, listings, review responses and phased rollout are part of the release stage, not a separate charge.

Will the app work offline?

If your users need it to. Offline-first is a design decision we make in discovery, because it changes the data model rather than being added later.

Who owns the code and the store listings?

You do. Code lives in your repository from the first commit, and the store accounts are registered to your company.

What happens when iOS or Android changes?

OS updates are covered by the support retainer. We test against betas and ship compatibility updates before the public release.

Stop forcing generic tools to fit a custom business

Tell us how your team works and we will tell you what it would take to build systems that match. No obligation, no sales sequence.

hello@krytohub.example+44 20 0000 0000
Speak with our experts

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