I build AI-powered iOS and Android apps end to end — wireframe to App Store — then help scale them with performance marketing.
50+ apps shipped · 100k+ downloads · 3.8k+ store ratings · 4.9★ average client rating across Fiverr and Upwork.
What I do:
• Mobile development — React Native, Flutter, Swift, Kotlin, TypeScript. Native-feel apps, including full App Store and Play Store submission.
• AI integration — OpenAI, vision models and NLP for recommendations, scanning, chat and document processing.
• Monetisation and analytics — RevenueCat subscriptions and paywall testing, Firebase, AppsFlyer attribution.
• Growth — Meta, TikTok and Apple Search Ads campaigns wired to real retention data, not just installs.
I’ve shipped products across health and fitness, education, finance, beauty, productivity and wellness — including an AI image enhancement app (Refine AI), a rewards-based step tracker (Fit Sprint) and an online learning platform (Relearn).
I’m also co-founder of Praidux (praidux.com), a design and development studio, so when a project needs a product designer or back-end engineer alongside me, I can bring in a team I’ve already worked with rather than sub-contracting blind.
My hours overlap with UK and EU time zones daily. You get a weekly demo, repo access from day one, and you talk to me directly — not an account manager.
Portfolio: umar-sipra.framer.website
Skills
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- Motion-led storefront and product discovery flow built around the brand, with performance budgets so the animation never costs load time
- Product catalogue, cart and checkout with payments integration
- CMS setup so the client’s team publishes products, drops and content themselves
- Brand identity and interface designed alongside the build rather than handed over as a static spec
- Responsive from the ground up — most of the audience arrives on mobile
A storefront that feels like the product it sells.
The brief. A VR hardware and gaming brand selling to a community that judges a site by how it feels. The store had to be immersive without becoming slow, and the client’s own team had to be able to run it without a developer.
What I built
Stack: React JS · TypeScript · CMS · payments integration · Figma
Built with the team at [Praidux](https://www.twine.net/signin More work: [umar-sipra.framer.website](https://www.twine.net/signin
- Structured course delivery with modules, lessons and resumable progress synced across web and mobile
- Student progress and retention dashboard for instructors, plus role-based access for admins, instructors and students
- Shared design system across web and mobile so features ship once instead of twice
- Auth, media handling and notifications; back end designed for term-based cohorts rather than one-off purchases
- Discovery and UX first, then front end and back end built in parallel to hit an academic-term launch date
Course delivery, student progress and instructor tooling in one system — web and mobile.
The brief. Most course platforms are built for dumping content, not for teaching. Relearn needed a student relationship layer: structured course delivery, visible progress, and tooling that lets instructors see who is falling behind — working as well on a phone during a commute as on a laptop.
What I built
Stack: React JS · React Native · TypeScript · Firebase · Figma
Built with the team at [Praidux](https://www.twine.net/signin More work: [umar-sipra.framer.website](https://www.twine.net/signin
- Native-feel step tracking on top of Apple HealthKit and Android health / motion APIs, with reliable background counting and battery-conscious sync
- A rewards economy that converts daily activity into redeemable points, with streaks and goals to drive repeat sessions
- Subscription tier and paywall via RevenueCat; Firebase for auth, user data and remote config
- Analytics and AppsFlyer attribution instrumented before launch, so paid acquisition on Meta and TikTok could be judged on day-7 retention instead of install volume
- App Store and Play Store submission, including health-data permission and privacy disclosures
A step counter people actually come back to — because walking earns something.
The brief. Step trackers are a commodity: the platform already counts steps for free. Retention only comes from giving someone a reason to open the app tomorrow.
What I built
Stack: React Native · Swift / Kotlin native modules · HealthKit · Firebase · RevenueCat · AppsFlyer
Built with the team at [Praidux](https://www.twine.net/signin More work: [umar-sipra.framer.website](https://www.twine.net/signin
- Cross-platform mobile app wrapping vision-model based image upscaling, restoration and enhancement
- Onboarding flow designed for conversion, with a subscription paywall managed through RevenueCat so pricing and trial length can be A/B tested without a release
- Firebase for auth, storage and remote config; background job queue so large enhancement jobs process without freezing the UI
- Full App Store and Play Store submission, including review compliance for AI-generated content
- Analytics and AppsFlyer attribution wired in from day one, then paid acquisition on Meta and TikTok measured against retention rather than installs
AI-powered photo enhancement, built as a cross-platform consumer app.
The brief. Take a heavy AI upscaling and restoration pipeline and turn it into a mobile app that feels instant, monetises through subscriptions, and passes App Store and Play Store review.
What I built
Stack: React Native · TypeScript · OpenAI / vision models · Firebase · RevenueCat · AppsFlyer
Built with the team at [Praidux](https://www.twine.net/signin More work: [umar-sipra.framer.website](https://www.twine.net/signin
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