Mobile product strategy
We define the user job, platform expectations, app scope, navigation model and launch path before screens or code start.
Service · Mobile Apps
Mobile app design and development for products that need to work in the hand.
99 Francs® designs and develops mobile app experiences for startups, SaaS products, AI tools, marketplaces and MVPs that need clear UX, premium UI and a realistic path to iOS, Android or cross-platform launch.
Mobile app design from $4,500 (MVP, 8–12 screens); development from $8,000 (cross-platform MVP).
150+
shipped projects
$32M+
raised by clients
9,000+
tasks delivered
Direct answer
99 Francs provides mobile app design and development services for focused digital products.
The service covers mobile UX strategy, iOS and Android interface design, prototypes, app design systems, App Store-ready assets and lean app development when the product needs to move from concept to working mobile experience.
Two tracks
Start with design, development, or combine both.
Mobile work has two different search intents. Some teams need the app designed, others need it built. This hub separates both paths while keeping one mobile product strategy.
Mobile app design
UX strategy, onboarding, app navigation, iOS and Android screens, prototypes, design systems, App Store visuals and developer-ready mobile UI. From $4,500.
Explore app designMobile app development
Lean React Native, Flutter or Swift app development for focused MVPs, product companions, internal tools and mobile-first workflows. From $8,000.
Explore app developmentWhat you get
A mobile product surface that feels clear before it becomes expensive.
The strongest app scopes are small enough to launch and complete enough to feel credible. We shape both the experience and the execution path around that constraint.
iOS and Android app design
We design onboarding, core flows, dashboards, forms, empty states, permissions and responsive mobile UI for repeated use.
Cross-platform development
When the app should be built, we can develop focused React Native, Flutter or Swift mobile experiences without overbuilding.
Launch-ready handoff
You get app flows, component rules, prototype logic, developer notes and the assets needed to move toward App Store review.
Best fit
Use Mobile Apps when the product needs a native-feeling experience, not only a responsive website.
You need an app MVP
We help turn a rough idea, deck or web product into a focused mobile app scope that can be designed, tested and built without months of drift.
The app flow is hard to explain
We organize onboarding, navigation, feature priority and app states so users understand what to do on the first session and why to return.
The website product needs a mobile companion
We can design and develop a focused app companion for SaaS, AI tools, marketplaces, communities, dashboards or internal workflows.
You need design and build together
The hub is intentionally split into design and development: start with UX/UI, build the app, or combine both into one mobile product sprint.
Process
From app idea to designed, buildable mobile flow.
The process keeps platform choices, app UX, visual design and development scope connected so the product does not split into strategy decks, static screens and unclear engineering tickets.
Define the app scope
We clarify the users, business goal, platform choice, core flows, launch risk and whether the project needs design, development or both.
Map the mobile experience
We plan onboarding, navigation, key screens, permissions, push moments, empty states, errors and the first meaningful action.
Design and prototype
We create polished mobile app screens, interactive prototypes, design system rules and App Store-ready visual direction.
Build or hand off
The work can continue into React Native, Flutter or Swift development, or be packaged for your engineering team to implement.
Related work
Mobile apps we designed, built and shipped to the stores.
Our own products, run end to end: an iPhone app with widgets on the App Store, a VPN on Google Play with its own server fleet, and a native world clock for four platforms.
iOS App · Widgets
My Chess Rating our own iOS app
Our own iPhone app and home-screen widget that puts Chess.com and Lichess ratings in one place and explains why they move: tilt check, best hours, openings that cost points, goals and a Sunday report. SwiftUI, WidgetKit and StoreKit 2 on a Node and Postgres backend, designed, shipped and run by 99 Francs.
Android App · VPN
SimpleV VPN our own Android app
Our own one-tap VPN for Android: no account to start, no traffic logs, WireGuard or Xray Reality to get through networks that block VPNs. A Kotlin and Compose app, an Express and Postgres control plane on Railway and exit nodes on Vultr that start on demand, live on Google Play about two weeks after active work began, plus a Chrome extension that protects the browser on the same accounts.
Mobile App · iOS, Android, Mac, Watch
Timeslide our own world clock
Our own world clock where every city is a card: drag one sideways and a single shared time moves across all of them, with the weather for that hour. Built natively for iPhone, Android, Mac and Apple Watch, with widgets, GPU weather shaders and 8 languages. On the App Store and Google Play.
Guides
Further reading
Mobile design8 min read
From Idea to App Store: How We Design Mobile Apps for Your MVP Success
Bringing your idea to life as a mobile app MVP is no small task. Launching quickly while delivering a seamless user experience is crucial to validating your concept and securing early traction.
Mobile app sprint
If the app is the product experience, make the first version clear, polished and realistic to ship.
iOS · Android · UX/UI · Prototype · React Native · Flutter · Swift
Start mobile app→Mobile apps FAQ
Questions founders ask before designing or building an app.
Yes. 99 Francs can design mobile app UX/UI and can also develop focused mobile apps, MVPs and app companions using React Native, Flutter or Swift when the scope is lean and product-led.
We design for iOS, Android and cross-platform app experiences. For development, we usually scope React Native, Flutter or Swift depending on the product, team and launch constraints.
Start with mobile app design when the flow, UX, screens or prototype are unclear. Start with mobile app development when the scope is already defined and the goal is to ship a focused mobile product surface.
Yes. We can help shape and build a focused mobile app MVP for startups, SaaS products, AI products, communities, marketplaces and internal tools, while keeping scope tight enough to launch.
Mobile app design starts at $4,500 for an MVP (8–12 screens); mobile app development starts at $8,000 for a cross-platform MVP. Scope, screen count, integrations and platform choice move the price from there. Every project runs in fixed-price phases with no upfront payment — see how we work.
No. Mobile app design and development both run in fixed-price phases with no deposit — you pay at the end of each phase, once you’ve seen it working. See the full breakdown of how we work.