React Native Apps
Single codebase for iOS and Android with near-native performance. The right default for 80 percent of apps. Used by Discord, Coinbase, Shopify, and Microsoft.
Service
Mobile Apps that Ship Fast and Don't Break.
iOS and Android apps built on React Native or native depending on what your product actually needs. From founder MVPs to production-grade consumer apps and B2B tools.
What is it?
Mobile App Development, defined
Mobile App Development is the design, build, and release of native or cross-platform mobile applications for iOS and Android. Magnis AI builds on React Native (cross-platform with native performance), Flutter (when design uniformity matters), or fully native Swift and Kotlin (when platform-specific features dominate). All apps include a clear architecture, a backend, analytics, crash reporting, and a launch plan.
Who needs this?
You probably need this if any of these sound familiar
- Founders shipping an MVP and validating product-market fit fast
- Companies adding a mobile companion to an existing web product
- B2B businesses giving field teams a mobile tool that beats spreadsheets
- E-commerce brands wanting a branded app for repeat buyers
- Healthcare, fitness, and services businesses needing a customer-facing mobile experience
Overview
Mobile App Development, the practice in summary
A mobile app is the second-most-expensive product decision after hiring. Magnis AI starts with the lightest version that proves the hypothesis, ships it in 12 to 16 weeks, and scales from there. We do not build kitchen-sink apps that take a year, miss the market, and never recoup the cost.
Capabilities
What we deliver
Each capability is a defined deliverable with clear inputs, outputs, and review gates.
Flutter Apps
Single codebase with pixel-identical UI across platforms. The right choice when brand uniformity matters more than platform conventions.
Native iOS and Android
Swift and Kotlin for apps that need deep platform integration, peak performance, or features that cross-platform tools cannot replicate.
Backend and API Design
Node.js, Python, or Go backends with REST or GraphQL APIs, on AWS, GCP, or Supabase. Designed for the app, not bolted on later.
App Store and Play Store Submission
We handle review, ASO basics, screenshots, descriptions, privacy declarations, and the submission gauntlet. First release through full live status.
Crash Reporting, Analytics, A/B Testing
Sentry, Mixpanel, PostHog, or Amplitude wired in from day one. You ship knowing what users do and what breaks.
Framework
The Magnis Mobile MVP-First Method
Three rules: Ship the smallest useful product in 12 weeks, instrument it from day one, and iterate based on real user behaviour, not roadmap fantasy. We are not interested in pre-launch feature debates. We are interested in the data the first 1,000 users give us.
Methodology
How a typical engagement runs
Clear phases with explicit artefacts and review gates. Independent review at every phase boundary.
- 01
Discover
Product strategy, user journeys, technical choices (cross-platform vs native), data model, and a 12-week MVP scope. Output: design brief + technical plan.
- 02
Design
Wireframes, high-fidelity Figma designs, and a clickable prototype reviewed with real users before code starts.
- 03
Build
App + backend delivered in 2-week sprints, with TestFlight and Play Internal builds for stakeholder review every sprint.
- 04
Launch and Iterate
App Store and Play Store submission, soft launch, analytics review, and 90 days of fast iteration based on usage data.
Outcomes
What you get
Concrete, measurable outputs you can verify against the original brief.
- MVP live in App Store and Play Store within 12 to 16 weeks
- Single codebase serving both platforms (React Native default)
- Real user data informing every next-sprint decision
- Crash-free user rate above 99.5 percent at launch
- Maintainable code your team or another agency can take over later
Timeline
12 to 16 weeks for MVP, longer for production-grade apps
Typical delivery window. Actual timeline depends on scope, agreed during the scoping call.
Industries we deliver this for
- SaaS
- Healthcare
- Real Estate
- Education
- E-commerce
- Professional Services
Common questions about Mobile App Development
React Native, Flutter, or native? How do you choose?
React Native by default. It is faster to build, faster to ship updates (over-the-air), and 80 percent of apps do not need platform-specific behaviour. Flutter if pixel-identical UI across iOS and Android matters more than platform conventions. Fully native if you need ARKit, HealthKit, deep camera work, or peak performance. We make the call after a scoping call, not by preference.
How much does a mobile app cost?
An MVP in React Native typically runs between 12 and 16 weeks of build effort. Fully native apps cost roughly 1.6x because of double the build work. Backend and infrastructure are additional. We quote after a 30-minute scoping call where we size the MVP scope.
Do you also build the backend?
Yes. We design the app and backend together because they are one product, not two. Backend stack is chosen for the use case: Node.js or Go for high-throughput APIs, Python for data and ML, Supabase or Firebase for fast MVPs.
Who owns the code and the App Store accounts?
You do. Code lives in your GitHub or GitLab. App Store and Play Store accounts are under your business entity. Magnis AI is added as a developer, not the owner. You can change agencies (or take it in-house) without losing access or rebuilding.
Do you support apps after launch?
Yes, on a retainer basis. Most apps need iteration, OS updates, and feature additions for at least 12 months after launch. We offer a Mobile App Maintenance retainer covering bug fixes, OS updates, store compliance, and small feature work.
Do you build AI features into mobile apps?
Yes. We integrate LLMs, vision models, and voice into mobile apps for use cases like in-app assistants, document scanning, image classification, and voice transcription. We use both on-device models (for privacy) and API models (for capability), depending on the use case.
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Learn moreScope Your Mobile App
30-minute scoping call. We will scope the MVP, recommend the stack, and quote a fixed-fee build. No commitment.