Native Android utilities
Kotlin from day one. Apps that fit Android devices and run smoothly on modest hardware.
Native Android workshop
Apps that run on your phone, not in the cloud
We build offline‑first Android utilities in Kotlin and Compose. No trackers, no ad IDs, no hidden surprises after install.
- Pure Android
- Works offline
- No ad ID
12:30
Streak7
This week
Our utilities
From sketch to release, we handle the tedious parts so the app feels solid.
Compose interfaces
Declarative UI with Material 3, adaptive layouts and purposeful motion.
Local‑first data
Room and DataStore store everything on the device, keeping the app alive on a plane or in a tunnel.
Battery & performance
We profile start‑up, jank and background work, then monitor Android Vitals after each release.
Built‑in accessibility
TalkBack labels, high contrast and large‑text support are baked in, not added later.
Long‑term care
Signed builds, staged rollouts on Google Play, and steady updates as Android evolves.
Our build process
Four steps from first call to ongoing care, each delivering a tangible checkpoint.
Discovery
We define the problem, users, and strict boundaries for the app.
Architecture
We draft screens, data flow and permissions before any production code.
Build
Kotlin, Compose and tests, delivered in incremental builds you can install and try.
Release & care
Staged rollout on Google Play, then monitoring, fixes and updates for new Android releases.
One-way data flow: the interface observes state, and the repository owns the data.
12:30
Streak7
This week
Our utility
В-play Frog Leap
В-play Frog Leap follows our workshop approach: native, quick to open, and quiet about your data.
- Runs without internet
- Stores data locally on your device
- Requests only needed permissions
- No accounts, no ads, no analytics SDKs
Tools we trust
A compact, plain toolbox that keeps utilities easy to maintain.
Kotlin
Kotlin – concise, null‑safe code easy to review.
Coroutines & Flow
Coroutines & Flow – smooth background work without callback chaos.
Jetpack Compose
Jetpack Compose – declarative screens that adapt to phones and tablets.
Room
Room – typed local database for offline storage.
WorkManager
WorkManager – reliable jobs that respect battery limits.
Hilt
Hilt – dependency injection that keeps modules testable.
Gradle CI/CD
Gradle CI/CD – repeatable builds and checks on every change.
Play Console
Play Console – staged rollouts, vitals and release tracking.
Our commitments
Four non‑negotiable rules we follow on every project.
Zero tracking by design
We never add analytics, ad SDKs or fingerprinting.
On‑device first
All data is processed and stored locally on the phone.
Battery discipline
Background work and wake‑ups are measured and kept minimal.
Accessible interfaces
Screens work with TalkBack, support large text and maintain proper contrast.
0trackers in our apps
0advertising IDs used
100%of app data kept on the device
1platform we build for
Plain terms
What we do
What we never do
Build native Android utilities in Kotlin
Sell or share personal data
Keep user data on the device
Add advertising IDs or tracking SDKs
Explain each permission in clear language
Hide behavior behind vague policies
Support shipped features after release
Ship features nobody asked for
Questions, answered
Brief answers about our workflow.
What does BONNE do?
BONNE designs, builds and maintains native Android utilities, focusing on offline use and privacy.
Which platforms do you support?
Android only. We dive deep into a single platform.
What do you do with user data?
Our utilities keep data on the device. No analytics, no ad SDKs, no data selling.
How can I contact you?
Email [email protected] or use the contact form on this page.
Do you support apps after release?
Yes. We provide fixes, adapt to new Android versions and keep dependencies up to date.
Studio details
BONNE is an Android development studio. Meet the team behind the utilities.
- CompanyBONNE
- DUNS276202784
- Address42 IMP DES MARRONNIERS BAILLY, 78870
- Email[email protected]
- Phone+447920673533
- Websitebonne.ink
Start a conversation
Tell us about your project. Your email client opens with a prepared message.
Privacy, in short
Our utilities collect no personal data, use no advertising ID and include no third‑party trackers. Everything stays on your device. Read the full policy for each utility below.
- No personal data collected
- No advertising ID
- Delete the app, delete your data
Privacy policies