Zero tracking by design
We never add analytics, ad SDKs or fingerprinting.
Android development, done right
Build native Android apps that run offline
At popsytlim.com we create Android apps that work without a network, using Kotlin and Jetpack Compose. No hidden IDs, no surprises after install.
- Pure Android
- Offline ready
- No ad identifiers
100%Streak
This week
- Pure Android
- Kotlin
- Compose UI
- Offline ready
- Accessible
- Privacy first
Hammer End
Hammer End
Hammer End follows the same principles: native, offline‑first, and quiet about your data.
- Works without internet
- Stores data locally on the device
- Requests only needed permissions
- No accounts, ads, or analytics
Our commitments
Four non‑negotiable rules we follow on every project.
0trackers in our apps
0advertising IDs used
100%of app data kept on the device
1platform we build for
On‑device first
All data stays on the user’s phone.
Battery respect
Background work is measured and kept minimal.
Accessible design
Interfaces support TalkBack, large text and proper contrast.
Our capabilities
From concept to launch, we handle every step of native Android development with care.
Full‑stack Android apps
Kotlin code from day one. Apps that feel native and run smoothly on modest devices.
Compose‑based 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 in tunnels or on a plane.
Power‑friendly performance
We measure 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 included from the start.
Release & maintenance
Signed bundles, staged Play rollouts and ongoing updates as Android evolves.
Our workflow
Four clear phases from the first call to long‑term support, each delivering tangible results.
Discovery
We define the problem, target users and any forbidden behaviours.
Architecture
We draft screens, data flow and permissions before any production code.
Build
Kotlin, Compose and tests are delivered in small, installable builds.
Release & care
Staged Play rollout, monitoring, fixes and updates for new Android versions.
Our stance
We do
- Create native Android apps in Kotlin
- Store user data locally
- Explain each permission clearly
- Provide post‑release support
We never do
- Sell or share personal data
- Add advertising IDs or tracking SDKs
- Hide behavior behind vague policies
- Release unwanted features
FAQs
Brief answers about our process.
What does popsytlim.com do?
We design, build and maintain Android apps with offline use and privacy as defaults.
Which platforms do you support?
Android only – we focus on a single platform.
What do you do with user data?
All data stays on the device; we run no analytics or ads and never sell data.
How can I contact you?
Email rosalind.fletcher25h@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.
Trusted toolset
Key technologies we rely on for every project.
Kotlin
Clear, null‑safe Kotlin code.
Coroutines & Flow
Coroutines & Flow for smooth async work.
Jetpack Compose
Compose for responsive, declarative UI.
Room
Room for typed offline storage.
WorkManager
WorkManager for battery‑aware background jobs.
Hilt
Hilt to keep modules testable.
Gradle CI/CD
Gradle CI/CD for repeatable builds.
Play Console
Play Console for staged releases and vitals.
About us
popsytlim.com creates the apps you see here. Here’s a glimpse of our studio.
- Companypopsytlim.com
- AddressBrockley Place Bury Road, Brockley BURY ST. EDMUNDS, IP29 4AG
- Phone+48794775279
- Websitepopsytlim.com
Get in touch
Tell us about your project. Your email app will open with a ready‑to‑send message.
Privacy summary
Our apps collect no personal data, use no ad IDs and contain no third‑party trackers. Everything stays on the device. Full policies are available per app.
- No personal data collected
- No advertising ID
- Delete the app, delete your data
Privacy policies