Mobile app development services that users keep open.

Clustercraft is a mobile app development company based in Ahmedabad, India. We design and ship native iOS, Android, and cross-platform apps in React Native and Flutter — for clients across India, the United States, the United Kingdom, the UAE, and Singapore.

/ 01 — Overview

Mobile app development services, end-to-end.

We design, build, and launch production mobile apps — from a consumer-facing iOS app to a workforce Android tool used by thousands of drivers in the field. Every mobile app development services engagement runs through the same in-house team: native engineers writing Swift and Kotlin, designers shaping the interface for thumb-reach and motion, and DevOps shipping releases through TestFlight and Play Console. One team, one timeline, one accountable point of contact.

/ 02 — What's included

What's included in our mobile app development services.

Every mobile app development services engagement at Clustercraft includes the work below as standard. No surprise add-ons, no separate invoices for foundations.

/ 01

Discovery, scoping, and platform strategy

Stakeholder workshops, competitive teardown, and a clear recommendation: native iOS plus Android, single-platform first, or cross-platform with React Native or Flutter. The decision shapes every line of code that follows.

Workshop notesPlatform strategyWritten scope
/ 02

UI/UX design for mobile-first interaction

User flows, wireframes, high-fidelity Figma prototypes, and a design system tuned for thumb-reach, motion, and platform conventions. Mobile app development without proper UX upfront is how apps get one-star reviews on launch day.

iOS HIGMaterial DesignFigma prototypes
/ 03

Native and cross-platform engineering

Production-grade code on the agreed stack — Swift and SwiftUI for iOS, Kotlin and Jetpack Compose for Android, or React Native and Flutter for cross-platform. Code reviews, automated tests, and platform-specific best practices throughout.

SwiftKotlinReact NativeFlutter
/ 04

Backend, APIs, and third-party integrations

Mobile-first API design, push notifications, in-app purchases, social login, and integrations with Stripe, Firebase, Mixpanel, or whatever the project needs. Done in-house — no subcontracting.

REST / GraphQLPush notificationsIAP / RevenueCat
/ 05

CI/CD, beta testing, and store deployment

Fastlane pipelines, TestFlight and Play Console internal testing, screenshots and store metadata, and submission through approval. We've shipped through both stores enough times to know which review pitfalls to avoid.

FastlaneTestFlightPlay ConsoleApp Store
/ 06

Performance, crash-free rate, and security

Cold-start under 2 seconds, 60fps animations, crash-free rate above 99.5%. Security review covering auth, secure storage, certificate pinning, and dependency audits before submission.

Sub-2s start60fpsSentry / Crashlytics
/ 07

Documentation and knowledge transfer

README files, architecture decision records, build instructions, signing setup, and recorded handoff sessions. Any custom mobile app development engagement without proper handoff fails the moment we leave.

READMEsLoom walkthroughsBuild configs
/ 08

30-day post-launch stabilisation

Bug fixes, crash analytics review, store rating monitoring, and small adjustments based on real user behaviour. Included in every mobile app development engagement, not invoiced separately.

Crash triageHotfix releasesStore metrics
/ 03 — What we build

Mobile apps we ship most often.

Our mobile app development services cover a handful of recognisable app shapes. Each comes with its own platform conventions, integrations, and reusable foundations we've built up over multiple shipped apps.

/ 01 — Consumer apps

Consumer mobile apps

D2C, lifestyle, fitness, and content apps with onboarding, subscriptions, and engagement loops. We focus on activation rate and retention week-one — not just feature count. Built native or in React Native depending on the use case.

OnboardingIAP / subsPushDeep linksAnalytics
/ 02 — Workforce apps

Workforce & field-ops apps

Driver, technician, and field-team apps that work offline, sync when connected, and survive a full shift on a single charge. Built for Android-first deployment with rugged device support.

Offline-firstGPS / mapsBarcodeCameraBackground sync
/ 03 — Fintech apps

Fintech & banking apps

Lending, payments, KYC, and wallet apps with biometric auth, certificate pinning, and compliance with RBI and regional regulators. We've shipped these in lending and remittances markets.

Biometric authKYC / OCRUPI / cardsCompliance
/ 04 — Healthcare apps

Healthcare & telemedicine apps

Patient apps, telemedicine consultation, and health-tracking apps with HIPAA-aware data handling, secure messaging, and integrations with hospital systems and wearables.

HIPAA-awareVideo consultHealthKitWearables
/ 05 — Commerce apps

Commerce & subscription apps

Shopping apps, subscription-box apps, and marketplace mobile clients. Cart, checkout, and post-purchase flows tuned for conversion. Native payment sheets, store-of-value wallets, and loyalty.

Apple PayGoogle PayUPIWishlistReorder
/ 06 — AI-native apps

AI-native mobile apps

LLM-driven mobile apps with on-device inference where possible, server-side fallback, and the kind of evaluation harnesses that keep AI features from regressing silently. Built on OpenAI, Anthropic, and Core ML.

Core MLOpenAIAnthropicRAGStreaming
/ 04 — Technology stack

The mobile app development stack we work in.

We have opinions, not preferences. The technologies below are what we ship to App Store and Play Store today — chosen because they hold up across devices, OS versions, and review processes.

— iOS native
SwiftSwiftUIUIKitCombineCore DataCore ML
— Android native
KotlinJetpack ComposeCoroutinesRoomHilt
— Cross-platform
React NativeExpoFlutterDart
— Backend & APIs
Node.jsPythonFastAPIGraphQLREST
— Infra & DevOps
AWSFirebaseFastlaneGitHub ActionsBitrise
— Auth & Payments
Auth0Firebase AuthApple PayGoogle PayRevenueCatStripe
— Observability
SentryCrashlyticsMixpanelAmplitudeApp Store Connect

Native vs cross-platform — we'll be honest

Cross-platform isn't always the right answer, and native isn't always the premium answer. We'll recommend native iOS plus Android when the app needs deep platform integration, cross-platform when speed-to-market matters more than perfect platform fidelity. The decision affects your timeline by months — we make it deliberately.

/ 05 — How we deliver

A mobile app development process built around shipping.

The same shape across every engagement. Designed so you see real software early on real devices, course-correct often, and ship without surprises. Adjusted for project size — but never skipped.

01

Discovery and platform decision

Workshops to understand the users, the use case, and the platforms that matter. We map the integrations, store policies, and device targets that will shape the build. Output: a written scope, a native-versus-cross-platform recommendation, fixed milestones, and a quote.

Week 1
02

Mobile UX and prototyping

User flows, wireframes, then high-fidelity Figma prototypes mirrored on actual phones for thumb-reach validation. We test before code — interfaces are cheap to change in design, expensive to change after store submission.

Weeks 2–4
03

App architecture and foundations

Codebase setup, signing certificates, CI/CD pipelines on Fastlane, staging builds in TestFlight and Play Console internal testing, authentication, and the data layer before writing feature code. Foundations week saves months of refactoring later.

Weeks 4–5
04

Sprint development

Two-week sprints. Beta builds shipped every Friday to your TestFlight or internal-testing track. Code reviews, automated tests, and CI/CD configured from sprint one — not bolted on at the end. You install the app on your own phone from week five.

Weeks 5–14
05

QA, performance, and review-readiness

Structured QA across the device matrix, performance testing under realistic conditions, and a security review covering auth, secure storage, and certificate pinning. We also pre-flight the app against App Store and Play Store policies — most rejections are avoidable.

Weeks 14–15
06

Store submission and stabilisation

Screenshots, store metadata, App Store and Play Store submission, and a 30-day post-launch stabilisation window where we own incident response and small fixes. After that, you choose: clean hand-off with documentation, a care retainer for ongoing support, or a growth retainer where we keep building.

Week 16+
/ 06 — Sectors served

Industries where we ship mobile apps regularly.

Sectors where we've built up patterns, integrations, and compliance know-how that carry over from project to project.

SaaS
Fintech
D2C & Commerce
Healthcare
EdTech
Logistics
/ 07 — Why Clustercraft

Why teams choose us as their mobile app development partner.

What makes our mobile app development services different in practice — beyond the marketing claims that every IT services company makes.

Senior native engineers, not generalists

iOS and Android engineers with seven-plus years each. The same person who scopes your app writes the code. No outsourcing the build to juniors after the contract is signed.

Code your team can extend

Idiomatic Swift and Kotlin, properly structured for your in-house engineers to take over. Documentation, tests, and architecture decisions are deliverables — not afterthoughts. Full IP transfer is standard.

Tuned for store performance

Cold start under 2 seconds, 60fps animations, crash-free rate above 99.5%. App Store and Play Store policies considered from sprint one — most rejections are avoidable when someone's been through review forty times.

Working in your timezone

Daily standups on the client's clock. Slack, Linear, GitHub, Figma — we use them the way internal teams do. Active mobile app development clients across India, the US, the UK, the UAE, and Singapore.

/ 08 — Case study

A mobile app we recently shipped.

One of forty-plus production apps. Full case study with the brief, the calls we made, and what shipped.

Featured CaseD2C WellnessiOS & AndroidNative

Subscription wellness app on the App Store top 10

Native iOS and Android shopping app for a wellness brand selling subscription supplements. Built in Swift and Kotlin, with backend on Node and Postgres, in-app purchases via RevenueCat, and growth instrumentation through Mixpanel and AppsFlyer.

4.8
Average store rating
2.4×
Subscriber LTV
99.7%
Crash-free rate
Read full case study →
/ 09 — FAQ

Mobile app development questions, answered.

The questions most clients ask before they brief us. If yours isn't here, ask on the scoping call.

Should we build native or cross-platform?

It depends on three things: how much your app touches platform features, how much you care about parity with system UX, and how fast you need to ship. Apps with deep camera, sensor, or AR integration are usually better native. B2B and content apps that need to ship to both stores quickly are usually better in React Native or Flutter. We'll recommend based on the use case — not based on what's easier for us to build.

What's the difference between iOS app development in Swift versus React Native?

Swift is Apple's native language — best performance, full access to platform APIs, and the smoothest path through App Store review. React Native lets you share roughly 80% of code between iOS and Android using JavaScript and React, which roughly halves engineering cost for two-platform apps. We ship both. Trade-off is performance ceiling versus build cost.

How long does mobile app development take?

A focused MVP for one platform typically ships in 10 to 14 weeks. A native iOS plus Android build with full design system, payments, and onboarding takes 14 to 22 weeks. Cross-platform builds in React Native or Flutter typically land in 12 to 16 weeks for both stores. Add 1–2 weeks for App Store and Play Store review and any rejection cycles.

Can you take over an existing mobile app?

Yes — about a third of our mobile work starts this way. We run a paid two-week audit covering the codebase, performance, crash analytics, store rating drivers, and tech debt. We give you an honest recommendation: keep going on the current stack, refactor selectively, or rebuild. We're upfront when a rewrite isn't justified — most existing apps are better off being fixed than replaced.

Who owns the code, design files, and store accounts?

You do. Full IP transfer is standard. Code lives in your GitHub or GitLab from day one — we never hold infrastructure or repos hostage. Figma files are owned by your account. App Store Connect and Play Console accounts are set up under your business — signing certificates and provisioning profiles transferred to you at the end of every engagement.

Do you handle App Store and Play Store submission?

Yes — submission, screenshots, store metadata, ASO setup, and approval shepherding are all included. We've shipped through both stores enough times to know which review pitfalls to avoid. If a build does get rejected, we own the response and resubmission cycle without separate invoicing.

What about updates and ongoing maintenance after launch?

Three options after launch. A clean hand-off with documentation if you have an internal team ready to take over. A care retainer for OS-version updates, bug fixes, and crash triage. Or a full growth retainer where we keep building features as the product evolves. Mobile apps require regular maintenance — iOS and Android each release major OS versions yearly that may need code changes.

Can you build apps with biometric authentication and compliance requirements?

Yes. Biometric authentication with Face ID, Touch ID, and Android Biometric API is standard. For regulated apps (fintech, healthcare), we implement certificate pinning, secure key storage in Keychain or Keystore, and full audit logging. We've shipped HIPAA-aware health apps and RBI-compliant fintech apps.

Do you build the backend too, or only the mobile client?

Both. Most mobile app development services engagements include the backend — Node, Python, or Go on AWS, with mobile-first API design, push notifications, in-app purchases, and analytics. If you already have a backend team, we work alongside them and consume your existing APIs. Either way works.

Have a mobile app to build or rebuild?

Send a brief, even a rough one. We'll come back within one business day with questions and a free 30-minute scoping call.

Discuss your project →