# FieldGauge

> Offline engineer toolkit: lux, level, vibration, sound, OCR and converters

Canonical page: [https://chrome-stats.com/d/org.igears.lightmeter](https://chrome-stats.com/d/org.igears.lightmeter)

## Overview

- **ID:** `org.igears.lightmeter`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** MOBPAGE HOLDINGS LIMITED
- **Category:** TOOLS
- **Downloads:** 61
- **Version:** 2.0.0
- **Last updated:** 2026-07-23
- **First published:** 2015-02-17
- **Publisher country:** HK
- **Size:** 21 MB
- **Data as of:** 2026-09-18
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=org.igears.lightmeter)
- **Website:** [https://mobpage.org](https://mobpage.org/)
- **Privacy policy:** [https://mobpage.org/en/apps/fieldgauge/privacy](https://mobpage.org/en/apps/fieldgauge/privacy)

## Description

FieldGauge is an offline-first engineer toolkit for phones. Measure, log and convert on device — without sending sensor data to the cloud.<br><br>Included tools<br>• Illuminance &amp; exposure — lux, EV100, shutter/aperture/ISO helpers<br>• Level, slope &amp; compass — pitch, roll, magnetic heading<br>• Vibration analyzer — RMS, peak, dominant frequency, baseline change<br>• Sound &amp; frequency — relative level, optional SPL estimate after calibration<br>• Environment — pressure, relative altitude, temperature, humidity (when fitted)<br>• AI instrument reader — on-device OCR for meters and nameplates<br>• Screen ruler and engineering unit converter<br><br>Designed for field work<br>• Works without INTERNET for measurement tools; optional ads use network when shown<br>• Sensors checked at runtime — missing hardware is shown as not fitted<br>• Local CSV measurement log with user-controlled export<br>• One-time Remove Ads purchase available (org.igears.lightmeter.remove_ads)<br><br>Accuracy notice<br>Phone sensors vary by model and are not certified instruments. Calibrate against a traceable reference before professional, regulatory or safety-critical use. Results are for reference only.<br><br>Brought to you by MobPage / iGears Technology Limited.

## Rankings

- #2,186,310 — 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.HIGH_SAMPLING_RATE_SENSORS`
- `android.permission.INTERNET`
- `android.permission.RECORD_AUDIO`
- `android.permission.WAKE_LOCK`
- `com.android.vending.BILLING`
- `com.android.vending.CHECK_LICENSE`
- `com.google.android.gms.permission.AD_ID`
- `org.igears.lightmeter.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION`

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Source: [Chrome-Stats](https://chrome-stats.com/d/org.igears.lightmeter)