# Toolwatch - Watch accuracy app

> Measure and track mechanical watch accuracy, offering care tips and service indicators. (iPhone/iPad app by Mathieu Nayrolles.)

- Source: https://appshunter.io/ios/app/toolwatch-watch-accuracy-app/id1105636950 (this page in markdown: same URL + `.md`)
- Developer: [Mathieu Nayrolles](https://appshunter.io/developer/1105636949)
- Category: Utilities, Lifestyle
- Price: Free
- Rating: 3.31/5 from 459 App Store ratings · 198 written reviews indexed
- Age rating: 4+
- Requires: iOS 9.0 · 14 MB
- Languages: English
- Released: 2016-12-01
- Data updated: 2026-08-19
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/toolwatch-watch-accuracy-app/id1105636950/reviews.md

## What is Toolwatch?

Measure and track the accuracy of your mechanical watches. Toolwatch is a free watch accuracy app trusted by the watchmaking industry's leaders and 15 000+ monthly users. Is your watch accurate? Should it be serviced? How does it compare versus other watches? Find out now by measuring the accuracy of your watch!

Toolwatch also brings to you the best tips, tailored on your watch for taking care of your watches.

"Toolwatch is the best watch accuracy app out there and it's free!" - Guillaume Cassez, Manufacture Jaeger-LeCoultre

"I regularly check the accuracy of my watch collection and Toolwatch is my favorite app for that." - Thomas Hulin, Van Cleef & Arpels

"I had the feeling my watch was running late, now I am sure thanks to Toolwatch and I could get my watch serviced for free as it was still under warranty!" - Benjamin Baudisson, Vacheron Constantin

"As a watch collector, knowing when to service my watch is crucial. Toolwatch helps me taking care of my mechanical watches." - Alex Ghotbi, Watch Specialist- Associate Director at Phillips Watches

As seen on ABlogToWatch, FratelloWatches, Theo & Harris, WristReview, Europa Star and more.

Find out now if your watch is accurate, it is FREE using Toolwatch mobile app.

## Key features

- Measure watch accuracy
- Track watch performance
- Personalized watch care tips
- Identify need for servicing
- Compare watch accuracy

## Recent user reviews (10 of 198)

All indexed reviews: https://appshunter.io/ios/app/toolwatch-watch-accuracy-app/id1105636950/reviews.md

### 1/5 — App has become useless

*2025-08-26, version 1.3.12*

It’s impossible to log in with a saved password. Will not allow copy/paste. Everytime you navigate from the password app the Toolwatch app deletes all login info

### 3/5 — Generally, I like the app.

*2024-11-03, version 1.3.12*

But every two or three days when I go to try to use it, I have to reset my password. Crazy.

### 1/5 — too glitchy to be useable

*2024-10-23, version 1.3.12*

horrible app, cant even type in my username and password without the screen glitching all over the place

### 1/5 — Used to be useful

*2024-10-10, version 1.3.12*

This used to be a useful little app, but lack of updates means I can’t even log in any more - weird spacing and text box problems on newer iPhones mean I can’t enter my password. Sad.

### 1/5 — Dead App

*2024-08-31, version 1.3.12*

This thing is deader than Al Gore’s hopes and dreams.

### 1/5 — App Does Not Work 2024

*2024-07-22, version 1.3.12*

App does not work.

### 1/5 — Dead app

*2024-06-20, version 1.3.12*

Used to be great. I’ve got a lot of watches backed up on their website, which is the only way you can use it now. The app is dead. Doesn’t even let me log in. Just says error, try again later. Same email and password works fine using a browser.

### 1/5 — Sick of logging in

*2024-06-19, version 1.3.12*

I am required to enter a password every few days (WHY?! HELLO!) and then the password usually doesn’t work, leading me to reset it. Bottom line: nobody’s behind the wheel driving this app! Other issues- the moonphase is cool, but about two days ahead of where it should be.

### 3/5 — Couldn’t get past the initial page

*2024-05-21, version 1.3.12*

Open the app, and it immediately demands I login even though I don’t have one. Couldn’t get past that, not willing to pay to see if it was worth the price

### 1/5 — No longer works

*2024-02-21, version 1.3.12*

Seems to no longer function or be supported.

## Frequently asked questions about Toolwatch

### What does the Toolwatch app do?

This app allows you to measure and track the accuracy of your mechanical watches. It helps you understand how precise your timepiece is and provides insights into its performance over time.

### What are the key features of Toolwatch?

Key features include measuring and tracking watch accuracy, receiving personalized tips for watch care, and determining if your watch might need servicing. You can also compare the accuracy of different watches.

### Is Toolwatch free to use?

Yes, the app is completely free to use. You can measure the accuracy of your watch without any cost.

### Who is this app for?

This app is designed for owners of mechanical watches who want to monitor their accuracy, learn about proper care, and identify potential servicing needs.

### How can this app help me with watch servicing?

By accurately measuring your watch's timekeeping deviations, the app can help you identify if it's running significantly fast or slow. This data can be crucial when deciding if your watch needs to be serviced, especially if it's still under warranty.

## Version history (last 5 releases)

### 1.3.12 — 2017-05-30

This app has been updated by Apple to display the Apple Watch app icon.

In this version, we focused on bug fixes. In details:

- Watches with more than 1 and less than 2 measures were not properly displayed;
- The autocompletion on calibres wasn't available;
- Errors messages weren't displayed properly;
- Wrong password on login was crashing the app.

### 1.3.11 — 2017-05-26

In this version, we fixed some rogue bugs and increase the accuracy of the atomic clock (yet again !).

In details,
- assets: New translations and watches
- input: Inputs will now allow native copy pasting 
- input: Keyboard won't mask focused inputs anymore 
- loading: Speed up loading of all the pages
- clock: The atomic clock will properly sync itself when the app is resumed

### 1.3.7 — 2017-03-31

In this version, we focused on improving yet again the accuracy of the atomic clock !

### 1.3.5 — 2017-03-28

In this version, we focused on fixes for a few remaining (and annoying!) issues we had and added some little features that will improve the overall experience. We also added calibers to our watch database!

Features:
watch: Calibers are now suggested when adding a watch
dashboard: A new sets of icons is used for edit/delete watch and delete measure
time: A tic/toc sound now plays on the atomic clock for easy setting up
watch: A popup is now displayed on incorrect forms


Fixes:
dashboard: The last watch before the fold is now measurable
login: Fetching account infos now reads "Loading your dashboard" instead of logging you in
signup: Signup screen isn't dismiss when coming back from background
time: Atomic clock speed stays constant when back and forthing accross pages

As always, your feedback is always welcomed on our social channels (Instagram, Facebook, Twitter) and feel free to contribute to our open sourced project : https://github.com/Toolwatchapp/

### 1.1.0 — 2017-01-27

In this version, we focused on performances improvements. The app should feel more responsive across all screens. In addition, we added a few features and fixed some rogue bugs ;) !

Features:
about: A buy us a beer link is now available from the about page 
login: A reset password button is now available on the login screen 
menu: A menu is now swipeable from the left side when logged. The menu contains links to social medias and logout/delete account button 

Fixes:
input: Select/Copy/Past functionality is now available on inputs
input: The virtual keyboard will not scroll up the views anymore
measure: High five gif now appears every time
watch: Only 1 click is required to select brand/model & error are correctly displayed

## Apps similar to Toolwatch

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [ChronoLog • Watch Accuracy](https://appshunter.io/ios/app/chronolog-watch-accuracy/id6452083510) | 4.7 (198) | Free | Utilities |
| [Atomic Clock PRO](https://appshunter.io/ios/app/atomic-clock-pro/id899090224) | 4.7 (10,071) | Free | Utilities |
| [Twelve O'clock](https://appshunter.io/ios/app/twelve-oclock/id1570977980) | 4.4 (82) | Free | Utilities |
| [SwissConnect Analytics](https://appshunter.io/ios/app/swissconnect-analytics/id1159256652) | 2.0 (7) | Free | Utilities |
| [Watch Tracker](https://appshunter.io/ios/app/watch-tracker/id610666926) | 4.7 (322) | $4.99 | Utilities |
| [Watch Tuner Timegrapher](https://appshunter.io/ios/app/watch-tuner-timegrapher/id991367080) | 3.8 (74) | $7.99 | Utilities |

## Related topics

[toolwatch](https://appshunter.io/ios/topics/toolwatch) · [lepsi watch](https://appshunter.io/ios/topics/lepsi-watch) · [lepsi](https://appshunter.io/ios/topics/lepsi) · [coros watch](https://appshunter.io/ios/topics/coros-watch)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-19.*