Mobile App Development
We design and develop iOS and Android applications with the performance, polish and release discipline of a product team — not a one-off project drop.
Beyond the download
Onboarding, first render, the moment a list scrolls — that is where users decide whether your product is worth a place on their home screen. We design for those moments first, then build outward to the features that keep people returning in week four.
Every engagement covers the whole lifecycle: product definition, UI/UX, native or cross-platform engineering, QA on real devices, store submission, and the release cadence that follows. You end up with an app you can keep shipping, not one that quietly rots between versions.
Tested on mid-tier hardware and poor networks, because that is what most of your users actually have.
Navigation, gestures, typography and haptics that match what iOS and Android users already expect.
Encrypted storage, secure auth flows, certificate pinning and platform privacy requirements handled up front.
Automated builds, staged rollouts, crash reporting and analytics wired in from the very first version.
What we build
From a first native release to a multi-platform product with deep backend integration.
Swift and SwiftUI applications built to Apple’s guidelines and reviewed with App Store submission in mind from the beginning — so approval is a formality rather than a scramble.
Kotlin and Jetpack Compose applications tuned for the range of devices and screen sizes Android actually ships on, with Play Console delivery and staged rollouts handled for you.
React Native and Flutter builds that share one codebase across iOS and Android without the tell-tale compromises — native modules where they matter, shared logic everywhere else.
Shopping experiences engineered around repeat purchase: fast catalogue browsing, saved payment methods, push-driven re-engagement and a checkout that survives a bad connection.
Field, logistics and internal-operations apps that work offline, sync cleanly when signal returns, and satisfy the security and device-management requirements your IT team will ask about.
How we measure ourselves
Concrete engineering targets applied to every mobile engagement, written into the agreement rather than the sales deck.
Held on mid-tier devices, not just the latest flagship.
Time to interactive on a mid-range Android handset.
Monitored continuously with alerting on regressions.
An installable build on your device every sprint.
Engagement models
Whether you are validating an MVP or expanding a mature product, each model gives you a clear delivery shape with room to evolve.
Perfect for startups validating a concept with a fast, focused mobile release.
from $499 /month
A lean build lane for teams moving from idea to first release.
Built for product teams that need richer functionality, stronger UX and ongoing release support.
from $799 /month
Ideal for scaling mobile products with active user acquisition and retention goals.
A dedicated mobile product partnership for complex apps, deep integrations and roadmap ownership.
from $999 /month
Best for established apps that need a reliable partner embedded in the roadmap.
We also run discovery workshops, product redesigns, backend-heavy mobile platforms and combined app-plus-web ecosystems with tailored engagement models.
Our process
Seven stages, each with something you can see, click or install at the end of it.
We start with the problem, the users and the commercial goal — then pressure-test whether an app is genuinely the right answer.
Feature set, platforms, integrations and release plan agreed and written down, with a clear line between version one and later.
Flows, wireframes and a clickable prototype you can put in front of real users before a line of production code exists.
Native or cross-platform engineering in two-week cycles, with an installable build on your device at the end of each one.
Automated tests plus manual passes on a real device matrix — different screen sizes, OS versions and network conditions.
Store listings, assets, review submission, phased rollout and release monitoring across the App Store and Google Play.
OS upgrades, crash triage, performance work and a roadmap for the features version two deserves.
Why KeyPels
The things clients tell us they did not get from the last team they hired.
The engineers and designers in your kick-off are the ones who build the app. No hand-off to a junior bench once the contract is signed, and no rotating cast between sprints.
We push back when a requested feature will not move the metric you care about, and we bring alternatives. You are buying judgement as well as delivery capacity.
Performance work happens on mid-tier hardware and throttled networks throughout the build, so the experience holds up outside a demo on the newest phone.
CI, automated builds, crash reporting, analytics and staged rollouts are configured in the first sprint — not bolted on the week before launch.
OS releases break things every year. Our retainers cover upgrades, crash triage and continuous improvement so your app does not quietly decay.
Benefits
The practical outcomes behind the engineering decisions.
A structure that absorbs new features and user growth without a rewrite in eighteen months.
Encrypted storage, secure authentication, certificate pinning and compliance with platform privacy rules.
Platform-native patterns and accessible design, validated with real users before build.
A focused first release that reaches the store while the opportunity is still open.
Analytics and funnels instrumented from version one, so roadmap arguments end with evidence.
Fixed-scope phases with a clear change process — no surprise invoices at the end of a sprint.
FAQ
Still unsure? Send us a note — we reply personally.
iOS and Android, natively with Swift and Kotlin or cross-platform with React Native and Flutter. Which route we recommend depends on your feature set, performance needs and how much of the product is genuinely platform-specific — we make that call with you during scoping, not after the contract.
A focused MVP typically takes 3–4 months from kick-off to store approval. A richer product with backend integrations, multiple roles and offline behaviour usually runs 6–9 months. You get an installable build every two weeks throughout, so progress is never a matter of trust.
Cross-platform is usually right when the two platforms should behave the same way and time to market matters; it can cut build time meaningfully. Native earns its cost when you need heavy graphics, deep hardware access, complex background work or platform-specific interaction. We will tell you which applies to your case even when it is the cheaper answer.
Yes. Store listings, screenshots, metadata, privacy declarations, review submission and phased rollout are all part of delivery. We also stay on through the first release window to handle any reviewer feedback quickly.
It depends on platforms, feature depth and integrations, so we quote after scoping rather than guessing up front. Every engagement is broken into fixed-scope phases with a defined change process, so you can plan spend and stop or extend at clear points.
We do — flows, wireframes, a full interface design and a clickable prototype, all produced in-house by the same team that builds the app. Design and engineering working together is a large part of why the result feels considered.
Yes. We regularly connect mobile apps to CRMs, ERPs, payment providers, analytics platforms and bespoke internal APIs, including building a middleware layer when the existing system has no usable API.
Encrypted local storage, secure authentication flows, certificate pinning, no secrets in the bundle, dependency scanning and adherence to Apple and Google privacy requirements. For regulated clients we also support external penetration testing and remediation.
Our support retainers cover OS upgrades, crash triage, performance monitoring, store compliance changes and a prioritised queue for new features — because the version that ships is rarely the version that succeeds.
Bring us the concept, the half-finished build or the app that needs rescuing. We will tell you honestly what it takes to get it to the store and keep it there.
