# Instruments for Wear OS

> Altimeter, speedometer, GPS tracker, stopwatch, compass and more all in one app

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

## Overview

- **ID:** `com.appfour.wearinstruments`
- **Platform:** Android
- **Type:** Android app
- **Status:** Available
- **Publisher:** appfour
- **Category:** MAPS\_AND\_NAVIGATION
- **Downloads:** 130,771
- **Rating:** 3.39 / 5 (570 ratings)
- **Version:** 1.0.210304
- **Last updated:** 2021-03-04
- **First published:** 2018-09-13
- **Publisher country:** DE
- **Data as of:** 2026-09-06
- **Store listing:** [Google Play Store](https://play.google.com/store/apps/details?id=com.appfour.wearinstruments)
- **Website:** [http://www.appfour.com](http://www.appfour.com/)
- **Privacy policy:** [http://www.appfour.com/privacy.html](http://www.appfour.com/privacy.html)

## Description

The Instruments for Wear OS Chrome extension brings a comprehensive suite of navigational and measurement tools directly to your smartwatch. It includes altimeter, speedometer, GPS tracker, stopwatch, and compass—all integrated into one seamless app. Users can operate each instrument individually or enjoy an all-in-one interface with customizable watchfaces and complications.

Exclusive to the full version, the app offers graph and map displays on the watch and maintains a history of recordings for detailed tracking. It supports a wide range of Wear OS smartwatches including Sony SmartWatch 3, Fossil Q series, Ticwatch, Michael Kors, Huawei, LG, ASUS ZenWatch, Samsung Gear Live, TAG Heuer, and many more. The app smartly compensates for hardware limitations by utilizing your phone’s barometer and GPS when the watch lacks these features, ensuring full functionality. Whether you're navigating, tracking speed, or timing activities, this extension is a versatile tool for Wear OS users.

## Rankings

- #194,837 — Overall

## Review summary

User feedback highlights recurrent problems with installation, purchasing, and device compatibility on Wear OS, along with troubling battery drain and data reliability. While some praise features like GPS tracking and watch-face use, these positives are overshadowed by frequent transaction failures, download issues, and inconsistent readings across watches. Overall, compatibility, payment workflow, and power consumption are the most commonly mentioned pain points, with only limited reports of usable free features.

### Pros

- GPS tracking is highly valued by users (e.g., one reviewer immediately purchased the full package for GPS features).
- Watch-face support is appealing and a key selling point.
- Overall feature set is seen as promising and upgrade-worthy by some users.
- Some reviews describe the app as 'Very good' or 'Good'.

### Cons

- Compatibility and installation failures across Wear OS devices and specific watches (Galaxy Watch 6, Galaxy Watch 4, Samsung Watch 5, TicWatch Pro 3 Ultra, etc.).
- Payment and purchasing issues (transactions declined, cannot pay, refunds and post-purchase download problems).
- Severe battery drain/power consumption on devices (battery vampire; altimeter draining quickly).
- Data accuracy issues and unreliable instrument readings (most data is inaccurate; oximeter compatibility issues).
- Store and install hurdles (Google Play flags hazard; watch unable to download new apps or install correctly).

## Similar extensions and apps

- [Altimeter for Wear OS watches](https://chrome-stats.com/d/com.appfour.wearaltimeter) — 128,131 users, 3.04 / 5
- [Speedometer for smartwatches](https://chrome-stats.com/d/com.appfour.wearspeedometer) — 88,998 users, 2.96 / 5
- [Stopwatch for Wear OS watches](https://chrome-stats.com/d/com.appfour.wearstopwatch) — 203,484 users, 3.96 / 5
- [Classic Watch Face Wear OS](https://chrome-stats.com/d/com.watchfacestudio.classicshifr) — 448 users
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- [P054 Digital Watch Face](https://chrome-stats.com/d/com.watchfacestudio.p054) — 1,011 users
- [Functional Sports For Wear OS](https://chrome-stats.com/d/com.watchfacestudio.FunctionalSports)
- [Track Time](https://chrome-stats.com/d/com.spwatch.tracktime) — 667 users
- [1Smart-A](https://chrome-stats.com/d/com.rx7ru.smarta) — 568 users
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- [ACTIVE 11 Digital Watch Face](https://chrome-stats.com/d/com.watchfacestudio.active11) — 587 users, 4.33 / 5
- [Sporty Digital Watch Face](https://chrome-stats.com/d/com.smartartstudios.sporty.interactive.watchface) — 35,200 users, 3.65 / 5

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