# Compass · Bubble Level > Classic brass compass & bubble level. Manual calibration, fully offline. Canonical page: [https://chrome-stats.com/d/com.siamakerlab.compass](https://chrome-stats.com/d/com.siamakerlab.compass) ## Overview - **ID:** `com.siamakerlab.compass` - **Platform:** Android - **Type:** Android app - **Status:** Available - **Publisher:** Sia Makerlab - **Category:** TOOLS - **Downloads:** 55 - **Version:** 1.14.0 - **Last updated:** 2026-06-22 - **First published:** 2026-06-06 - **Publisher country:** KR - **Size:** 14 MB - **Data as of:** 2026-09-24 - **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.siamakerlab.compass) - **Website:** [https://apps.siamakerlab.com/compass/](https://apps.siamakerlab.com/compass/) - **Privacy policy:** [https://apps.siamakerlab.com/compass/privacy-policy/](https://apps.siamakerlab.com/compass/privacy-policy/) ## Description A precise digital compass and bubble level in one app, wrapped in a classic brass instrument theme.
A brass compass over a parchment nautical chart; a brass level over a drafting blueprint — the look and feel of vintage navigation tools.
Powered entirely by your device sensors — no internet connection is required for the core features.

■ Features
• Digital compass — azimuth + 8-point cardinal direction (N/NE/E/SE/S/SW/W/NW). Brass dial with red/navy needle illustration.
• Bubble level — real-time pitch (front/back) and roll (left/right) visualization. Bubble color reflects state (green / yellow / red).
• Sensor calibration — fine-tune offsets yourself (Settings → Calibration).
· Compass: slider for azimuth offset (±30°), or one-tap "Set current as 0°".
· Level: place the device on a flat surface and tap "Apply as level" to capture the current reading as an offset.
· Calibration is saved persistently.
• Classic vintage theme — fixed brass + cream palette, consistent regardless of the system dark mode.
• Nautical chart (CARTA MARINA) and drafting blueprint background illustrations reinforce the instrument feel.
• Settings screen redesigned as rounded bubble cards.
• Auto-rotation aware — UI and sensor coordinates stay consistent in portrait and landscape.
• Foldable/tablet aware — the dial and frame resize automatically to fit the available vertical space.
• Calibration prompt — alerts you when magnetic sensor accuracy drops and recommends a figure-8 motion.
• Smooth animations — 50Hz sensor input interpolated to your 60fps display.

■ Privacy
Compass does not collect any personal data on its own.
The only data sent off-device is what Google/AdMob requires to serve and measure ads. In the EEA the GDPR consent prompt is shown, and you can change consent any time under Settings → Ad Privacy Options.

■ Ads
• App-open ad: at most once every 15 minutes when bringing the app to the foreground (frequency managed by AdMob).
• Adaptive banner: a single banner pinned to the bottom of the screen.
• Prefer no ads? Use Settings → In-App Purchase → Remove Ads. One-time purchase, restorable on other devices via "Restore Purchases".

■ Permissions
• Internet: for ads, in-app review, in-app billing, and the open-source license screen.
• Advertising ID: used only for ad measurement (not used after the Remove Ads purchase).

Questions or feedback: sia@siamakerlab.com ## Rankings - #2,245,697 — Overall ## Permissions and access ### Permissions - `android.permission.ACCESS_ADSERVICES_AD_ID` - `android.permission.ACCESS_ADSERVICES_ATTRIBUTION` - `android.permission.ACCESS_ADSERVICES_TOPICS` - `android.permission.ACCESS_NETWORK_STATE` - `android.permission.FOREGROUND_SERVICE` - `android.permission.INTERNET` - `android.permission.WAKE_LOCK` - `com.android.vending.BILLING` - `com.android.vending.CHECK_LICENSE` - `com.google.android.gms.permission.AD_ID` - `com.siamakerlab.compass.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION` ## Similar extensions and apps - [Bubble Level Compass](https://chrome-stats.com/d/com.pegasusstudio.bubblelevel) — 24 users - [Compass & Surface Level](https://chrome-stats.com/d/com.pegasusstudio.compass) — 15 users - [Privacy Compass & Level](https://chrome-stats.com/d/com.tjsoftlabs.compasslevel) - [Simple Compass](https://chrome-stats.com/d/com.volabs.utilitics.simplecompass) — 35 users - [Loxley Compass & Level](https://chrome-stats.com/d/net.loxleylabs.compasslevel) - [Bubble level- compass app](https://chrome-stats.com/d/com.bubblelevel.ruler.compass.app.spiritlevel) — 1,367 users - [Bubble Level: Compass - angle](https://chrome-stats.com/d/com.bubblelevel.spiritlevel.ruler.measure) — 184 users - [Bubble Level & Compass](https://chrome-stats.com/d/com.bubble.level.surface.level.ruler) — 190 users - [Compass & Level](https://chrome-stats.com/d/com.hoanganhphan91.compass) — 27 users - [Compass & Level Toolbox](https://chrome-stats.com/d/com.zhujiecao.toolbox) — 16 users - [Compass, Level & Ruler](https://chrome-stats.com/d/com.itworldpk.compasslevel) — 12 users - [Compass Level checker](https://chrome-stats.com/d/com.electroniccompass) — 43 users --- Source: [Chrome-Stats](https://chrome-stats.com/d/com.siamakerlab.compass)