RouterSync
One app on Mac, iPhone, Android and Windows that hands the Wi-Fi you joined to your travel router. A shared core per platform family, 650+ automated tests and a build pipeline for each store.
Read the case study: RouterSyncApps from sketch to store. App development for iPhone, iPad, Mac, Android and the web
We build apps the way we build our own: a prototype on your phone early, native code where it matters, and the store release handled for you.
Who it is for.
- Founders who need a first version in people's hands, to learn from real use before a bigger build.
- Businesses that need an app for their own customers or staff, on iPhone, Android or both.
- Teams with a web product that needs a native companion: a menu bar app, a widget, a browser extension.
- Agencies that need an iOS or Android developer who also understands design.
What you get.
The same way of working we use for the apps we publish ourselves.
Something to hold early
A working build on your phone through TestFlight or a Google Play internal test, so decisions are made on the real thing.
Native where it matters
Swift and SwiftUI on Apple platforms, Kotlin and Jetpack Compose on Android: widgets, Shortcuts, the menu bar and the Keychain work as people expect.
Shared code where it is honest
When the experience is the same everywhere, like a 3D card that opens in any browser, we share the code and wrap it in native apps.
Store release handled
App Store Connect, Google Play Console, screenshots, review notes and in-app purchases.
Builds that make themselves
Automated pipelines build each version and send it to testers, so a fix can reach them the same day.
Tests on the logic
The part that must not break, like talking to a device or taking a payment, gets its own automated tests.
How it goes.
Five steps, each one ending with something you can install.
Shape
Who uses the app, for what, how often. We turn that into flows and a short list of what the first version must do.
Prototype
The key screens at real size, then a working prototype on your own device.
Build
Native code and the server it needs, in short rounds, each one a build you can try.
Release
Store listings, screenshots and review, with the answers Apple or Google ask for.
Grow
Fixes, new OS versions and the next features, based on what people actually do in the app.
Our own apps.
We publish apps under our own name, on our own accounts, so every step of the work is one we have done for ourselves.
Also designed and built by us
- Color Before the LinesPainting app on the App Store for iPhone and iPad, with an Android port in developmentcolorbeforethelines.com
- FreeboardWeb app, Chrome extension and a connector for AI assistantsfreeboard.money
- Cardillon3D pop-up greeting cards for the web, wrapped in iPhone and Mac appscardillon.com
- FullhouseA launcher for Android TVfullhouselauncher.com
What sets the price.
Apps vary more than sites. These are the parts that move the price and the date the most.
Platforms
Each platform is its own build, test and store review. Starting with one is often the faster way to learn.
Accounts and data
Sign-in, sync between devices, a server and an admin panel are usually the largest part of the work.
Hardware and other systems
Talking to routers, printers, Bluetooth devices or another company's API needs testing on the real thing.
Payments
In-app purchases and subscriptions follow store rules and need their own screens, receipts and review notes.
Design ready or not
If the screens exist, we build from them. If not, the product design comes first.
Tell us the platforms and the must-have features: we answer with a scope, a price and a plan for the first release.
Questions
Native or cross-platform?
Native (Swift, Kotlin) when the app relies on the system: widgets, background work, hardware, the feel of each platform. A shared web core when the experience is the same everywhere. We choose per project and explain the trade-off.
Do you design the app too?
Yes. The same studio does the product design, so screens and code don't drift apart. If you already have designs, we build from them.
Can you take the app through store review?
Yes. We publish our own apps, so we prepare listings, screenshots, privacy details, demo accounts and the answers reviewers ask for.
Start an app.
Tell us who the app is for and what it must do first. We read every message and reply personally.
Or write to info@bytelegion.site