Your product on iOS, Android & web
Fixed price. One UK builder, first call to launch. Mobile ships to both stores by default—no layers, no surprise invoices.
What You Get
Everything you need to go from idea to live on web, iOS, and Android, with ongoing support after launch. Mobile projects usually include both app stores unless you want one platform only.
UX & Product Design
Clean, user-friendly screens designed around your specific workflow. Every screen is built to reduce friction and make the app intuitive for your users.
App Build
A fully functional app built to a high standard. Fast to develop, cost-effective, and ready to grow with you as your idea takes off.
Launch & go-live
We ship to the App Store and Google Play for mobile, and deploy web apps when that is in scope. Store assets, hosting where needed, compliance, and a smooth launch day.
Ongoing Support & Maintenance
We stay with you after launch. Updates, fixes, and improvements as you need them. You focus on your business, we keep the app running.
Is This Right for You?
We work best with a specific type of client. Here's how to tell if we're a good match.
This is for you if…
- Non-technical founders with an app idea they want to test
- Coaches and service providers who need a booking or client app
- Small businesses wanting a simple internal tool or customer-facing app
- Anyone who wants to validate an idea before investing heavily
This probably isn't for you if…
- Enterprise-level apps with complex integrations
- Apps requiring custom hardware, IoT, or advanced AI
- Rebuilds of large existing platforms
- Projects where you need a full marketing team included
- Apps that need to handle millions of users from day one
Sound like you? Book a free call or send a message.
How It Works
Three clear phases from first call to launch. You stay in the loop at every milestone.
Scope & Design
We start with a couple of meetings to understand your idea, gather requirements, and define the scope. Then we design the key screens and user flow so you can see exactly how your app will look and feel before any build work begins. You give feedback as we go—iteration starts here. Fixed price agreed upfront.
Build & Prototype
With the design approved, development begins. At the midway point you’ll see a working prototype and give direct feedback. Iteration runs through every phase, not just mid-build, so scope, design, and product stay aligned without slowing momentum.
Launch & Handover
Final build, store or web go-live, and full handover. We handle submissions, hosting where needed, compliance, and launch day—including last polish where it matters. Every project includes 3 months of free bug fixes.
Selected Work
Real products shipped for real founders. From validated idea to live on the web, App Store, and Google Play.
Shirt Squad
Football shirt collectors had no single place to browse, compare, and track kits across thousands of teams.
Built a data-rich iOS app powered by 84,000+ shirts scraped across 2,000+ teams with real-time search, favourites, and collection tracking.
Users browse 84k+ items with sub-second search.
Bamos
Existing social apps rely on swiping. There was no simple way to find people nearby who share your hobbies and are actually free.
Designed and built a social discovery app with interest matching, availability scheduling, and real-time chat.
Users discover and connect with people nearby who share their interests. Real-time chat and availability matching from day one.
Japanese Whisky Yoru
Japanese whisky gains serious value over time, but collectors had no proper place to track bottles as investments—only scattered forums and spreadsheets—while staying on top of current market pricing.
Built an app centred on portfolio-style tracking: AI-assisted lookups fetch each bottle’s current market price, stored with a timestamp so every holding builds a history. That powers price-over-time graphs and keeps current values refreshable—alongside distillery depth, UK context, tasting guides, and highball recipes.
Collectors see how bottle values move through dated price points and charts, update current prices when needed, and keep distillery content and recipes in the same place.
Want something built for your idea? Book a free call or send a message.
What Our Clients Say
Honest feedback from founders who've shipped real products with us.
“Working with Onnit Studio has been an outstanding experience. Communication is on point and exceeds my expectations with every new feature or update. I couldn’t be happier with the level of expertise they’ve taken my vision and turned it into reality.”
“Onnit did more than make my idea come to life, it improved it by injecting genius ways.”
Trusted by founders behind
Sebastian Salata
Onnit Studio is built around shipping: clear scope, fast MVPs, and products that reach users on the web and in the app stores. You get one experienced builder end to end, not a rotating cast of account managers.
When you book a call, you speak with Sebastian directly. No sales team and no handoffs before build starts.
- 5+ years building and shipping mobile apps
- 15+ apps published to the App Store and Google Play, plus web products
- UK-based. The person you speak to is the person who builds your app
- Focused on MVPs and fast launches
You Always Know Where Things Stand
Weekly updates, shared progress, and direct access to the person building your app. You’ll never be left chasing for answers.
We Don’t Disappear After Launch
Most studios hand off the app and move on. We stay involved, handling updates, fixes, and improvements so you can focus on your business.
One Person, Start to Finish
The person you speak to on the first call is the same person who designs and builds your app. Direct communication, consistent quality.
Built to Launch, Not to Drag On
Everything is geared towards getting you live. Clear scope, agreed timeline, and a focus on shipping a product that works in the real world.
- Fixed price agreed before any work starts
- Clear milestones from kickoff to launch
- 3 months of free bug fixes after launch
- No hidden fees, no hourly surprises
You see the full design before any build work starts. If it's not right, you don't proceed. The final cost depends on screens, features, and complexity, and you always know the full price before we begin.
Frequently Asked Questions
Straight answers to the questions we get asked most.
Most projects take between 4 and 8 weeks from kickoff to launch, depending on the number of screens and complexity. We’ll give you a clear timeline during our initial call.
We ship iOS, Android, and web. For mobile products we typically launch on both the App Store and Google Play by default. If you only need one mobile platform or a web-only product, we scope that up front.
Tighter scope projects can land around £900 to £1,500. Most full bespoke builds fall in the £1,500 to £3,000+ range. You’ll get a fixed price after our first conversation, with clear milestones along the way so you always know what comes next. No hourly surprises.
That’s exactly who we work with. We explain everything in plain English, share regular updates, and make sure you’re comfortable at every stage. You don’t need any technical knowledge.
Every project includes 3 months of free bug fixes after launch. Beyond that, we offer ongoing support and maintenance plans so your app stays up to date as your business grows.
Small tweaks are expected and encouraged. The process includes iterations so your input shapes the product, and it’s normal for things to sharpen once you can use a prototype. Big scope changes we agree together before moving on.
Let's talk about your app idea
Book a free 30-minute strategy call, or fill in the form and we'll get back to you within 24 hours. We'll review your idea, talk through what's realistic, and outline the next steps.