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Co-Authored-By: Claude Opus 5.5 <[email protected]>
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# NoGooleApps
**Everyday Android apps without Google.** Privacy-friendly rebuilds of the standard Google apps, for people who want the polish of the originals without Play Services, tracking or an account. Made with GrapheneOS, CalyxOS, /e/OS and LineageOS in mind, and works the same on any stock Android phone.
> Not affiliated with, endorsed by or connected to Google. These are independent, clean-room rebuilds: no Google code, assets, icons, fonts or text are used.
## Apps
| App | Replaces | Status | Install |
| --- | --- | --- | --- |
| **Wetter** (`wetter/`) | Google Weather / Pixel Weather | alpha, in daily testing | [Obtainium](#install-with-obtainium) · F-Droid: not yet |
More apps will follow, one folder each. Each one goes through the same pipeline (see [How these apps are made](#how-these-apps-are-made)).
### Wetter
A weather app with the look and feel of Pixel Weather: an animated sky that changes with the conditions, a large hero temperature, hourly and 10-day forecasts, and shaped Material 3 Expressive detail tiles (wind, sun, UV, air quality, visibility, humidity, pressure, pollen).
- **No Google Play Services.** Location uses the platform's own providers (including the AOSP fused provider), so it works on GrapheneOS without sandboxed Play.
- **No account, no tracking, no analytics.** Everything stays on the device. Coordinates are rounded to two decimals (about 1 km) before they reach the weather service.
- **Open data sources only:** [Open-Meteo](https://open-meteo.com) for forecasts, 15-minute precipitation, air quality, pollen and place search (CC BY 4.0), and [Nominatim / OpenStreetMap](https://nominatim.org) for naming your current location.
- **Features today:** current location and saved cities (swipe between them), search with a full preview before saving, precipitation-in-the-next-hours card, a rule-based daily summary, day detail view, units and theme settings, light and dark mode, and two home-screen widgets ("Now" 2×1/2×2 and "Forecast" 4×2/4×3).
- **Coming next:** severe weather alerts (DWD / MeteoAlarm), more widget sizes and a widget configuration screen, precipitation radar map, card reordering, notifications.
Requires Android 10 (API 29) or newer.
## Install with Obtainium
[Obtainium](https://github.com/ImranR98/Obtainium) installs and updates apps straight from this repository's releases, with no store in between.
**One-tap link for Wetter** (open it on your phone with Obtainium installed):
[Add Wetter to Obtainium](https://apps.obtainium.imranr.dev/redirect?r=obtainium://app/%7B%22id%22%3A%22app.wetter%22%2C%22url%22%3A%22https%3A%2F%2Fgit.mrblake.cc%2FMrBlake%2FNoGooleApps%22%2C%22author%22%3A%22MrBlake%22%2C%22name%22%3A%22Wetter%22%2C%22preferredApkIndex%22%3A0%2C%22additionalSettings%22%3A%22%7B%5C%22apkFilterRegEx%5C%22%3A%20%5C%22wetter%5C%22%2C%20%5C%22filterReleaseTitlesByRegEx%5C%22%3A%20%5C%22%5EWetter%5C%22%2C%20%5C%22includePrereleases%5C%22%3A%20true%2C%20%5C%22fallbackToOlderReleases%5C%22%3A%20true%2C%20%5C%22autoApkFilterByArch%5C%22%3A%20true%7D%22%7D)
**Or add it by hand:** in Obtainium tap *Add app*, paste `https://git.mrblake.cc/MrBlake/NoGooleApps`, and set:
- *Override source*: **Forgejo / Codeberg** (this repository runs on a self-hosted Gitea, which speaks the same release API)
- *Filter release titles by regular expression*: `^Wetter`
- *Filter APKs by regular expression*: `wetter`
Because several apps live in one repository, every release is titled after its app (for example `Wetter 0.1.0`) and its APK is named after it (`wetter-0.1.0.apk`). The filters above make sure Obtainium only ever picks up the weather app.
**F-Droid:** not available yet. The apps contain no proprietary libraries, so an F-Droid build is planned (either the main repository or a self-hosted F-Droid repo).
## How these apps are made
### The Replica pipeline
Every app is rebuilt with **[Replica](https://github.com/Jakeschincariol/replica-skill)**, an open set of eleven Claude Code skills by Jake Schincariol for cloning an app's *functionality and UX patterns* clean-room style. Each skill writes files the next one reads, and everything is kept in [`replica/`](replica/):
| Step | Skill | What it produced for Wetter |
| --- | --- | --- |
| 1 | `replica-recon` | [Recon map](replica/recon.md) built from public sources (help center, reviews, store listing): 15 screens, 9 user flows, components, inferred data model, [feature matrix](replica/features.csv) |
| 2 | `replica-architect` | [Architecture](replica/architecture.md) and [schema](replica/schema.sql): native Kotlin, offline-first, no server, public APIs only |
| 3 | `replica-design` | [Design tokens](replica/design/tokens.json) and [component specs](replica/design/components.md), WCAG AA contrast checked (70 colour pairs), generated into Compose code |
| 4 | `replica-build` | The app itself, screen by screen, with a [build log](replica/build-log.md) and [screenshots](replica/clone-screens/) rendered from a real API response |
| next | `replica-test`, `replica-diff`, `replica-entrepreneur`, `replica-brand`, `replica-launch`, `replica-deploy`, `replica-backend` | QA, parity scoring against the original, reading real user reviews for improvements, naming and branding, store listing, release |
The rules Replica enforces, and that this project follows:
- **Public sources and our own devices only.** No decompiling, no private APIs, no reading the original's code or network traffic.
- **Everything written fresh.** Code, icons, weather glyphs, the animated sky and every label are made from scratch. Reference screenshots of the originals live in `replica/screens/` for layout comparison only and never ship.
- **What cannot be cloned is left out on purpose:** Google's own forecast models, Gemini summaries, Calendar/Gmail-based insights and account sync. Open alternatives replace them where it makes sense.
### Built with AI, steered by a human
The code, the design system and this README were written by **Claude Opus 5.5** (Anthropic's model, ID `claude-opus-5-5`) running in **Claude Code**, working through the Replica skills step by step. The human side of the project (that's [@MrBlake](https://git.mrblake.cc/MrBlake)) sets direction, supplies reference screenshots, tests every build on a real Pixel phone and reports what feels wrong. Issues found that way, like stutter during scrolling or slow location, are measured on the device and fixed. A typical loop:
1. A skill produces its document or code; the human reviews it.
2. The app is built and rendered to screenshots on the JVM (Roborazzi), and the screenshots are checked against the reference.
3. The release build is installed on the phone over adb and used for real; frame timings (`dumpsys gfxinfo`) and logs guide the fixes.
Each commit says what changed and carries a `Co-Authored-By` line for the AI.
## Building from source
Requirements: JDK 17 or newer and the Android SDK (platform 36).
```bash
cd wetter
./gradlew :app:assembleRelease # APK in app/build/outputs/apk/release/
./gradlew :app:testDebugUnitTest # unit + screenshot tests
./gradlew :app:recordRoborazziDebug # re-render replica/clone-screens/
```
Local release builds are signed with the debug key so they install over each other. Published releases will use a dedicated signing key.
## Repository layout
```
replica/ recon, architecture, design system, build log, screenshots
wetter/ the weather app (Kotlin, Jetpack Compose, Glance widgets, Room, WorkManager)
```
## Credits
- Weather data: [Open-Meteo.com](https://open-meteo.com), CC BY 4.0
- Place names: © [OpenStreetMap](https://www.openstreetmap.org/copyright) contributors, via Nominatim
- UI icons: [Material Symbols](https://fonts.google.com/icons), Apache 2.0
- Method: [Replica](https://github.com/Jakeschincariol/replica-skill) by Jake Schincariol
## License
Not chosen yet. Until a license file is added, all rights are reserved by the author.