# LevelMaster: Bubble Level

> Bubble Level & Angle Meter

Canonical page: [https://chrome-stats.com/d/id6786262885](https://chrome-stats.com/d/id6786262885)

## Overview

- **ID:** `id6786262885`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** Yuki Okawa
- **Category:** Utilities
- **Version:** 1.0.1
- **Last updated:** 2026-07-19
- **First published:** 2026-07-07
- **Size:** 24 MB
- **Data as of:** 2026-09-11
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/levelmaster-bubble-level/id6786262885)
- **Website:** [https://y-okawa777.github.io](https://y-okawa777.github.io/)
- **Privacy policy:** [https://y-okawa777.github.io/privacy/ja](https://y-okawa777.github.io/privacy/ja)

## Description

Turn your phone into a precision spirit level. Flat & vertical bubble levels, an angle meter, a level beep alert, calibration, and a camera overlay — fully offline.

LevelMaster turns your phone into a precision spirit level and angle meter, using the built-in motion sensor — no extra hardware needed.

BUBBLE LEVEL
• Circular bubble level for flat surfaces — lay the phone on a table, shelf or countertop
• Bar bubble level for vertical surfaces — hold it against a wall, door frame or picture
• Automatically switches between flat and vertical modes as you move the device

ANGLE METER
• Large protractor-style gauge with a live degree readout
• "Set as 0°" lets you zero out any starting angle — handy for measuring a slope or a change in angle (e.g. a ramp or a roof)

LEVEL ALERT
• A confirming beep and a light vibration the instant the device becomes level
• Turn the beep or vibration off independently in Settings

CAMERA OVERLAY
• See a level line through the camera while you hang a shelf, a frame or a piece of art
• The line turns green the moment it's level

CALIBRATION
• Correct small sensor offsets against a known-level reference, per device

MADE FOR EVERYONE
• Light & dark themes with multiple accent colors
• English and Japanese
• Keep the screen on while measuring

PRIVACY FIRST
• Works fully offline. The camera is used only to overlay the level line — nothing is ever captured, saved, or sent anywhere. No account, no cloud, no tracking.

Great for DIY projects, hanging furniture after a move, and checking a boat or dock is level while fishing.

Note: readings are approximate and depend on your device's sensor. LevelMaster is intended for everyday DIY use, not for professional or regulatory measurements.

Free, supported by ads.

## Rankings

- #1,815,966 — Overall

## Similar extensions and apps

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- [Bubble Level: AR, Angle Finder](https://chrome-stats.com/d/id1594066382) — 4.50 / 5
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- [Bubble Level 2022](https://chrome-stats.com/d/id1352996393) — 4.70 / 5
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Source: [Chrome-Stats](https://chrome-stats.com/d/id6786262885)