Zero tracking by design
We never add analytics, ad SDKs or fingerprinting.
Android‑only studio
Not a port, but a native Android app
At mfacilitie.com we deliver Android apps the same way each time: offline-first, no trackers, no advertising ID.
- Built for Android
- Offline‑first
- No ad identifiers
Works offlineZero third‑party trackersPure Android UI
Non‑negotiables
What stays consistent across every app we ship.
0trackers in our apps
0advertising IDs used
100%of app data kept on the device
1platform we build for
On‑device by default
All data is processed and stored on the phone.
Battery discipline
We treat background work as a cost and measure it.
Accessible interfaces
Screens work with TalkBack, large text and sensible contrast.
- Android native
- Kotlin
- Jetpack Compose
- Offline first
- Accessibility
- Privacy by design
Our services
From a clean slate to a maintained release on Google Play.
Native Android apps
Kotlin from day one. Apps that feel at home on Android and run on modest hardware.
Compose interfaces
Declarative UI with Material 3, adaptive layouts and smooth motion.
Offline‑first data
Room and DataStore store everything on device, so the app works in a plane or tunnel.
Battery & performance
We profile startup, jank and background work, then monitor Android Vitals after each release.
Accessibility
TalkBack labels, high contrast and large‑text support are built in from the start.
Release & care
Signed builds, staged rollouts on Google Play and ongoing updates as Android evolves.
0trackers in our apps
100%of app data kept on the device
1platform we build for
Interface preview
Line Book
Line Book follows our core rules: native, offline‑first, and silent about your data.
- Functions without a network
- Stores data in app storage on your device
- Requests only necessary permissions
- No accounts, no ads, no analytics SDKs
Our workflow
A short, predictable path from idea to released app.
Discovery
We define the problem, target users and the behaviours we must avoid.
Architecture
We map screens, data flow and permissions before writing production code.
Build
Kotlin, Compose and tests delivered in incremental builds you can install.
Release & care
Staged rollout on Google Play, followed by monitoring, fixes and OS updates.
One-way data flow: the interface observes state, and the repository owns the data.
Tools we trust
Standard, well‑supported tools – no exotic dependencies.
Kotlin
Concise, null‑safe Kotlin that is easy to review.
Coroutines & Flow
Background work and state handling without callback tangles.
Jetpack Compose
Declarative screens that adapt to phones and tablets.
Room
Typed local database for offline storage.
WorkManager
Reliable background jobs that respect battery limits.
Hilt
Dependency injection that keeps modules testable.
Gradle CI/CD
Repeatable builds and checks on every change.
Play Console
Staged rollouts, vitals and release tracking.
Common questions
A few things people usually ask first.
What does mfacilitie.com do?
We build and maintain Android apps end‑to‑end, with offline use and privacy as defaults.
Which platforms do you support?
Android only. We go deep on one platform instead of spreading thin.
What do you do with user data?
Our apps keep data on the device. We run no analytics or ad SDKs and we do not sell data.
How can I contact you?
Write to marcelharier@gmail.com or use the contact form on this page.
Do you support apps after release?
Yes. We ship fixes, adapt to new Android versions and keep dependencies current.
Clear terms
What we do
What we never do
Build native Android apps in Kotlin
Sell or share personal data
Keep user data on the device
Add advertising IDs or tracking SDKs
Explain every permission in plain language
Hide behaviour behind vague policies
Support shipped features after release
Ship features nobody asked for
Who we are
mfacilitie.com builds the apps you see here. Here are the details behind the studio.
- Companymfacilitie.com
- DUNS294306712
- Address130-136-BATIMENT F 130 AV JOSEPH KESSEL VOISINS-LE-BRETONNEUX, 78960
- Phone+48794493713
- Websitemfacilitie.com
Talk to us
Tell us what you are building. Your email app opens with a prepared message.
Privacy, in short
Our apps 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 app below.
- No personal data collected
- No advertising ID
- Delete the app, delete your data
Privacy policies