Your app idea, shipped to the App Store and Google Play.
Fixed-price design, build, and launch. 5+ years shipping apps for founders worldwide.
An app that ships. Not an idea that stays only inside your head.
Most app ideas never leave the notebook. Yours does not have to. Founder-led, fixed price, shipped on both stores, with real input from you at every stage.
Design around your users
Clean, friction-free screens built around how your users actually think. The look, feel, and flow are agreed before a single line is built, so you see the app before you pay for it.
Built in three collaborative rounds
Your idea evolves as we build. Three iterations, three meetings, constant feedback. Fixed price, organised process, no rigid scope and no scope creep.
Launched on iOS, Android and the web
We handle App Store and Google Play submissions, store listings, screenshots, policies, and launch day. Web apps ship too when that is in scope.
Ongoing support and growth
Launch is the start, not the finish. Monthly plans cover bug fixes, app store management, and ASO (the work that actually gets your app found and downloaded). Pricing further down.
From idea to live app in three simple steps.
No rigid scope. No scope creep. Just a friendly process with room for the idea to get sharper as it is coming to life. The first step is a free call, everything after follows from there.
A friendly call
We talk through your idea for 30 minutes. No sales script. You leave with a clearer picture of what your app could look like and a fixed price, whether you work with us or not.
Design and build together
Three collaborative rounds with real feedback along the way. Your idea gets sharper as it is coming to life, not locked into a spec on day one.
Launch on the App Store and Google Play
We handle submissions, store listings, screenshots, and launch day. Your app lives where people actually download apps.
The hardest part is starting. Book a free call and take step one.
Real apps. Real founders. Live on both stores.
A closer look at three recent builds, the problem each founder was solving, and the work that shipped.
Shirt Squad
Football shirt collectors were stuck across forums, resale pages, and scattered spreadsheets. No single place let them browse, compare, and keep track of kits across clubs, countries, and seasons.
Designed the Shirt Squad brand and built a native iOS and Android app powered by a catalogue of 84,000+ shirts across 2,000+ teams. Real-time search, detailed shirt pages, favourites, and a personal collection that travels across devices.
Shipped on both stores as the collectors' go-to reference. 84k+ shirts searchable in under a second, with a growing user base tracking their collection in one place.
Japanese Whisky Yoru
Japanese whisky appreciates fast, sometimes by hundreds of pounds a bottle, but collectors had no portfolio tool. They juggled auction sites, price-check links, and spreadsheets just to see what their collection was worth today.
Designed and built a portfolio-style tracker backed by a custom web scraper that pulls current whisky prices straight from retailer sites, with AI-assisted lookups on top. Every price is stored with a timestamp so each holding builds its own history, feeding price-over-time charts alongside distillery depth, tasting guides, and highball recipes.
Live on iOS and Android. Collectors track portfolio value over time, refresh live market prices on demand, and keep whisky knowledge in the same place as their collection.
Bamos
Every social app felt like a dating app in disguise. There was no lightweight way to find someone nearby who shared a hobby and was actually free this weekend, not just someone to swipe on.
Designed the Bamos brand and built a social discovery app around interests and availability. Users pick hobbies, set when they are free, match with people who overlap, and talk in real-time chat. Profiles go deeper than a photo, so matches mean something before the first message.
Launched on the App Store with a clear differentiator from swipe-based apps. Users meet through shared hobbies and open windows, not photos alone.
Want something like this built for your idea? Book a free call.
What clients say
Honest feedback from founders who have shipped real products with Onnit Studio.
“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.”
“Working with Onnit Studio made building my app far more achievable than expected. Sebastian was responsive, solutions-focused, and genuinely invested in getting the details right. From structuring the database to implementing AI tools for pricing automation, he helped turn a complex idea into a clean, functional MVP without unnecessary complexity. I would happily recommend him to anyone developing a specialist app.”
Hi, I'm Sebastian.
Founder of Onnit Studio. 5+ years shipping apps, 15+ launched.
Onnit Studio is a small, founder-led design and build studio. We work directly with founders and small businesses who want a real, live app on the stores.
When you book a call, you speak with me directly. No sales team. No handoffs before work starts.
- 5+ years designing and building mobile apps
- 15+ apps shipped to the App Store and Google Play
- Worked with founders across the UK, US, Europe, and Asia
- Branding, app design, development, and launch under one roof
Founder-led, end to end
No account managers, no offshore handoffs, no briefs getting lost in translation. The person you meet on the first call is the one designing, building, and launching your app.
Your idea can still evolve
The process is built around three collaborative iterations so the app sharpens as it comes together. Fixed price, flexible thinking. The opposite of a locked-in spec.
We do not disappear at launch
Most studios ship and move on. Onnit Studio stays on for bug fixes, app store management, and growth work so you focus on users, not firefighting.
Built to ship, not to drag on
Clear scope, a fixed price agreed before work starts, and a real launch date. Your app reaches users. It does not sit in a half-finished repo.
Is this right for you?
Onnit Studio works best with a specific type of client. Here is how to tell if we are a good match.
This is for you if…
- Founders with an app idea they want to test in the real world
- Coaches, creators, or 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 without a six-figure budget
This probably isn't for you if…
- Enterprise platforms with heavy custom integrations
- Apps that need custom hardware, IoT, or deep native AI
- Rebuilds of large existing products
- Projects expecting a full marketing team included in the build
- Apps that must handle millions of users from day one
Sound like you? Book a free call or send a message.
Every project is different. Every price is fixed.
Price depends on scope and build time, not on a package. A simpler app with fewer screens lands lower, a bigger feature set sits higher. Whatever the size, you get a complete app on both stores and a fixed price agreed before any work starts.
$600 – $3,600+
Larger or more bespoke builds are quoted on scope after the first call.
- Fixed price agreed before any work starts
- App icon and key screens designed up-front, before you commit
- Three collaborative iterations, your input shapes the product
- Launch on the App Store and Google Play
- No hourly rates, no surprise invoices, no scope creep
You see the designs before you commit. If the direction is not right, we do not proceed. The final price depends on screens, features, and complexity, and you always know it before we begin.
Keep the app alive. Keep it growing.
Launching is the easy part. What actually moves the needle is the work that happens every month after. Optional ongoing plans cover hosting, bug fixes, app store management, and ASO so your app keeps running, keeps getting found, and keeps converting.
The difference between an app that gets found and one that doesn't.
ASO stands for App Store Optimisation. It is the App Store and Google Play equivalent of SEO: the keywords, copy, icon, and screenshots that decide whether your app shows up in search and whether visitors actually hit install. Without it, even a great app stays invisible.
ASO is included in the ongoing support plans.
- Get found when users search relevant keywords
- Higher conversion from store visit to install
- Better-looking listing (icon, screenshots, copy) that actually sells
- Ongoing tweaks instead of a one-shot launch
Flexible monthly plans, from $79/mo
A few tiers depending on how active you want to be after launch, from basic upkeep through to full conversion optimisation. Full breakdown and pricing on the call, so we can match the plan to what the app actually needs.
- App hosting and stability monitoring
- Bug fixes and minor improvements
- App store management (policy updates, store housekeeping)
- ASO: keywords, listing copy, screenshots, and review replies
Plans are optional and can start any time after launch. Prefer one-off updates? That works too, quoted per change.
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. You get a clear timeline during the first call.
Every project is different. Most land between $600 – $3,600+ depending on scope and build time. Larger or more bespoke builds are quoted on scope after the first call. It is always a fixed price agreed before work starts, never hourly. You can switch between GBP and USD on the pricing section.
That is the whole point of the process. Three iterations, three meetings, room to refine as you see the app come together. Small tweaks are expected. Bigger scope changes we agree together before moving on. The idea sharpening is a feature, not a problem, but we stay disciplined about scope creep.
That is exactly who we build for. Everything gets explained in plain English. You do not need any technical knowledge, just a clear view of what you are trying to achieve and who it is for.
iOS, Android, and web. Mobile projects 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.
Every build includes bug fixes immediately after launch. Beyond that we offer optional monthly support plans covering hosting, bug fixes, app store management, and ASO. Pricing and plan detail are covered on the call so we can match the plan to what your app actually needs. One-off updates work too, quoted per change.
ASO is App Store Optimisation: keywords, listing copy, icon, and screenshots that decide whether your app gets found and whether visitors install it. If you care about downloads, yes. It is included in the ongoing support plans.
Yes, most projects are remote. The studio is UK-based but clients have come from across Europe, the US, and Asia. Calls happen on Google Meet or Zoom and the pricing toggle lets you switch between GBP and USD for clarity.
Onnit Studio specialises in fast, reliable mobile app development using modern no-code and low-code tools, picked per project based on what the app needs. The focus is on shipping a real product on the App Store and Google Play, on time, at a fixed price, rather than locking into any one stack for its own sake.
Let's talk about your app idea
One free 30-minute call. No pressure, no sales script, no commitment. We talk through your idea, what is realistic, and the next steps. Most founders leave with a clearer plan whether they work with us or not.