Need to build an iPhone app? Jonathan Ansumana brings 6 years of corporate iOS developer experience, a CS degree, and two published apps on the App Store. Every line of code built for performance, polish, and results.
Apps built for industry leaders
What I build
Every feature, every pixel, every interaction — designed to feel like it belongs on an iPhone.
Custom booking platforms with payments, reminders, recurring sessions, and admin dashboards. Built for gyms, coaches, and service businesses.
Apps with AI conversation, emotional support, and smart workflows. Already shipped Grwnded — an AI wellness app with real users.
Full App Store-ready apps with subscriptions, in-app purchases, onboarding flows, and smooth UX that keeps users coming back.
Multi-user apps with roles, messaging, push notifications, and offline support. Built for teams that run their business from their phone.
How it works
No small talk. Tell me your idea, your goals, and your dream app. I listen, scope it accurately, and give you a clear price — before any money changes hands. Zero commitment.
I map everything — every screen, every feature, every function. A clear project plan so when we start building, it's smooth sailing with no surprises.
I build in focused sprints. You see real working progress at every milestone before the next payment is due. No code in a black box — you're in the loop the whole time.
Two dedicated weeks of QA before launch. Every screen, every edge case, every device. If something's off, I fix it. Your app will be rock solid before it hits the App Store.
I handle the full App Store submission — screenshots, metadata, review compliance, everything. When your app goes live, it's a big deal. We make sure day one goes perfectly.
First month is on me — no charge. After that, $1,000/month covers updates, OS compatibility, bug fixes, and API maintenance. Your app's future is locked and loaded.
Industries
From healthcare to fitness to social — I've built across industries and know what it takes to ship.
Healthcare
Wellness
Fitness
Booking
AI / ML
Finance
Social Games
Sports
E-Commerce
Education
Restaurant
Real Estate
Published work
Two apps built from scratch, shipped to the App Store, and actively used by real people.
Grwnded
Health & Fitness
Anxiety relief and emotional support app with guided meditation, breathing exercises, AI-powered reflection, and animated avatar companions. 7-day free trial with subscription model.
View on App Store →
M8.
Trivia / Social
A conversation card game for couples and friends with categories designed to spark real connection — from icebreakers to deal breakers. Includes in-app purchases for additional packs.
View on App Store →App Store reviews
Worth every penny
"In a pinch when you need a reminder to take pause through a difficult situation, open Grwnded!"
Grwnded · App StoreIncredibly helpful
"Guided me through some really difficult times where I couldn't find an answer within."
Grwnded · App StoreSupportive
"I didn't think this app would be useful, but it has helped me through many days so far and I will continue to use it."
Grwnded · App StoreSo much fun!!
"My gf and I went out to the bar, had some drinks and sat playing the game! It was so much fun. Highly recommend!"
M8. · App StoreEasy & fun!
"Super easy to play with friends, first date, or a significant other! Always leads to interesting convos. Would recommend!"
M8. · App StoreWhy Jonathan
As a former NCAA Track & Field athlete, I know what discipline, repetition, and execution under pressure looks like. I bring that same mentality to every app I build.
Athletes don't miss practice. I don't miss deadlines. Every sprint, every milestone — delivered with the same discipline that defined my athletic career.
I've built apps from zero — an AI wellness app, a social card game, healthcare platforms. I help you think through the details that make the difference between good and great.
6 years at Infosys and Bridgeview building production iOS apps for real users. Your app won't be a side project — it'll be built to the standard of a seasoned professional.
Pricing
Fixed-price projects. No surprises. No hourly billing. You know the full cost before we start.
Investment range
$5,000 – $50,000+
Every project is scoped and priced on a free estimate call. No commitment required.
All third-party accounts (Square, Firebase, etc.) are set up and owned by you. No lock-in.
FAQ
It depends on complexity. A simple app can take 6–8 weeks. A full platform with booking, payments, and messaging typically takes 8–10 weeks of development plus 2 weeks of testing. I'll give you a clear timeline on the free estimate call.
Projects range from $5,000 to $50,000+ depending on features and complexity. I don't do one-size-fits-all pricing — I scope exactly what you need and give you a clear, honest number upfront. No hidden fees.
Absolutely. I build and test across all supported iOS devices and versions. Your app will run flawlessly on all modern iPhones before it goes live.
Yes — I handle everything. Screenshots, metadata, privacy policy requirements, and Apple review compliance. You just need an Apple Developer account ($99/year) and I take care of the rest.
The first month of post-launch support is included at no charge. After that, I offer a $1,000/month maintenance retainer covering bug fixes, iOS updates, and API changes. Your app stays live and running.
Absolutely. Apps are living products. Once launched, we can add features, tweak the UI, or scale for more users. Any new work beyond the maintenance retainer is scoped and priced separately.
Get in touch
Tell me about your project. I'll get back to you within 24 hours with a clear plan and honest estimate — no commitment required.