Kotlin
Kotlin – concise, null‑safe language for clean code.
Native Android studio
Keep your data on the phone, not in the cloud
KASA FIK s.r.o. builds offline‑first Android apps using Kotlin and Jetpack Compose. No trackers, no advertising ID, no hidden code.
- Android‑native
- Offline‑first
- No ad ID
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- Android‑native
- Kotlin
- Jetpack Compose
- Offline‑first
- Accessibility
- Privacy built‑in
Trusted toolset
A concise toolbox that keeps our Android codebase maintainable.
Coroutines & Flow
Coroutines & Flow – manage background work without callback hell.
Jetpack Compose
Jetpack Compose – declarative UI that adapts to phones and tablets.
Room
Room – typed local database for reliable offline storage.
WorkManager
WorkManager – schedule background jobs within battery limits.
Hilt
Hilt – dependency injection that stays testable.
Gradle CI/CD
Gradle CI/CD – repeatable builds and automated checks.
Play Console
Play Console – staged releases, vitals and rollout tracking.
Our expertise
From sketch to release we handle every Android detail, including the boring but essential work.
Native Android apps
Pure Kotlin code that runs smoothly on modest devices.
Jetpack Compose UI
Declarative screens with Material 3, adaptive layouts and subtle motion.
Local‑first data
Room and DataStore store everything on‑device, so the app works anywhere.
Battery & performance
We profile start‑up, jank and background tasks, then monitor Android Vitals.
Accessibility
TalkBack labels, high contrast and large‑text support are baked in.
Long‑term care
Signed builds, staged Play rollouts and regular updates for new Android versions.
Our workflow
Four clear steps from first call to ongoing support, each delivering a tangible checkpoint.
Discovery
Define the problem, target users and non‑negotiable constraints.
Architecture
Sketch screens, data flow and permissions before any production code.
Build
Write Kotlin and Compose, add tests, deliver incremental builds for review.
Release & care
Stage rollout on Play, monitor vitals, fix issues and update for new OS releases.
One-way data flow: the interface observes state, and the repository owns the data.
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Streak7
This week
Our app
Ladle & Lantern
Ladle & Lantern follows our standard: native, fast to launch and silent about your data.
- Operates without network
- Stores data locally on the device
- Requests only required permissions
- No accounts, no ads, no analytics SDKs
Questions, answered
Brief answers about our process.
What does KASA FIK s.r.o. do?
We design, build and maintain native Android apps focused on offline use and privacy.
Which platforms do you support?
Android only. We specialize deeply in this platform.
What do you do with user data?
All data stays on the device. No analytics, no ad SDKs, no data sales.
How can I contact you?
Email isabellebingle@gmail.com or use the contact form on this page.
Do you support apps after release?
Yes. We deliver fixes, adapt to new Android versions and keep dependencies up‑to‑date.
Our guarantees
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 is measured and kept within strict limits.
Accessible UI
Screens support TalkBack, large text and 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
- Build native Android apps in Kotlin
- Store user data on the device
- Explain every permission clearly
- Provide post‑release support
What we never do
- Sell or share personal data
- Add advertising IDs or tracking SDKs
- Obscure behavior behind vague policies
- Ship unsolicited features
Studio details
KASA FIK s.r.o. is an Android development studio. Meet the team behind the code.
- CompanyKASA FIK s.r.o.
- DUNS361787486
- Address708 /37 Optátova Brno, 637 00
- Phone+447348262538
- Websitekasafik.xyz
Start a conversation
Tell us about your project. Your email app will open with a ready‑to‑send message.
Privacy, in short
Our apps collect no personal data, use no advertising ID and contain no third‑party trackers. Everything remains on your device. Read each app’s full policy below.
- No personal data collected
- No advertising ID
- Delete the app, delete your data
Privacy policies