# ZeroLevel - Pro Spirit Level

> Instant launch, zero ads. A real spirit level app built for real work.

Canonical page: [https://chrome-stats.com/d/com.zerolevel.zero\_level](https://chrome-stats.com/d/com.zerolevel.zero_level)

## Overview

- **ID:** `com.zerolevel.zero_level`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** studio.ninka
- **Category:** TOOLS
- **Downloads:** 23
- **Version:** 1.2.0
- **Last updated:** 2026-05-06
- **First published:** 2026-05-06
- **Publisher country:** JP
- **Size:** 42 MB
- **Data as of:** 2026-09-10
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.zerolevel.zero_level)
- **Privacy policy:** [https://masa9999masa.github.io/ZeroLevel\_privacy\_policy/](https://masa9999masa.github.io/ZeroLevel_privacy_policy/)

## Description

**No ads. No waiting. No stress.**<br><br>ZeroLevel is a spirit level app designed around one principle: stay out of your way.<br><br>---<br><br>**[Simple. Ready the moment you open it]**<br>Measurement starts the instant you launch — no splash screens, no ads, nothing in between.<br>Hanging a shelf, leveling furniture, aligning a camera shot — built for that exact moment.<br><br>**[Two measurement modes, automatic switching]**<br>- 2D Mode (flat): Place your phone flat to see tilt in all directions at once. A bubble-style graphic makes it instantly readable.<br>  - Landscape support: Rotate to landscape for a larger bubble display with angle values at a glance.<br>- 1D Mode (upright): Stand your phone upright to check walls and posts for true vertical. A bar-style graphic gives you a quick read.<br>Auto-detects your phone&#39;s orientation and switches modes — manual override available anytime.<br><br>**[Pro-grade calibration]**<br>Thick cases, camera bumps — fully compensated.<br>Back (flat) and side (upright) can each be zeroed independently.<br>Every measurement starts from a true zero baseline.<br><br>**[Hold mode for awkward spots]**<br>One tap locks the reading so you can check it at eye level.<br>A red border highlights the screen while locked — no guessing whether it&#39;s frozen or live.<br><br>**[Dark UI, always-on display]**<br>Bright daylight outdoors or dim workspaces — high-contrast fluorescent green on dark background keeps readings clear in any condition.<br>Screen stays on during measurement so the numbers are always there when you need them.<br><br>---<br><br>**[Pro: Feel the level — without looking at the screen]**<br> Pro features are available as a one-time purchase to support development.<br><br>**Stepped audio guidance (unique to this app)**<br>Adagio → Andante → Moderato → Allegro → Vivace → Presto → Goal —<br>7 stages of rising tempo and pitch guide you to level without ever glancing at the screen.<br>A vibration fires the moment you hit the goal zone — double confirmation.<br><br>**3-level precision setting**<br>- High Precision (goal under 1°): For precise, millimeter-level work<br>- Medium Precision (goal under 2°): Perfect for everyday DIY<br>- Low Precision (goal under 3°): Quick rough alignment<br><br>Precision setting controls both the audio guidance cues and the &quot;goal color&quot; shown in the bubble and bar graphics.<br><br>Additional Pro features:<br>- Vibration feedback (can be toggled independently from sound)<br>- Multiple calibration profiles (up to 3, each with a custom name)<br>  ※ When 2 or more profiles exist, the active profile name is shown on screen at all times<br>- Raw sensor data display (accelerometer X / Y / Z axes)<br>- Battery saving mode (reduces sampling rate to minimize power consumption)<br><br>---<br><br>**[Our approach to ads and purchases]**<br>This app is completely free with no ads.<br>Pro features exist as a way to say &quot;thanks for building this&quot; — nothing more.<br>No pressure. The free version is fully usable on its own.<br><br>---<br><br>**Requires**: Android 5.0 (API 21) or later

## Rankings

- #2,545,899 — Overall

## Permissions and access

### Permissions

- `android.permission.ACCESS_NETWORK_STATE`
- `android.permission.INTERNET`
- `android.permission.VIBRATE`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.zerolevel.zero_level.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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Source: [Chrome-Stats](https://chrome-stats.com/d/com.zerolevel.zero_level)