# LEPSI - Watch PRO

> Hardware-assisted watch caliber performance measurement and analysis tool. (iPhone/iPad app by LEPSI SARL.)

- Source: https://appshunter.io/ios/app/lepsi-watch-pro/id1039889250 (this page in markdown: same URL + `.md`)
- Developer: [LEPSI SARL](https://appshunter.io/developer/590525672)
- Category: Productivity, Utilities
- Price: Free
- Rating: 1.00/5 from 1 App Store ratings · 1 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 20 MB
- Languages: English, French, German, Japanese, Chinese
- Released: 2015-10-10
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/lepsi-watch-pro/id1039889250/reviews.md

## What is LEPSI?

(ONLY WORKS WHEN CONNECTED TO THE LEPSI - WATCH PRO SUPPORT)

WATCH PRO, THE NEW WAY TO ADJUST YOUR CALIBERS

The Watch PRO can measure the performances of a caliber (rate variation, amplitude, beat error) in just a few seconds. The Watch PRO is the result of a subtle mix between the highest technology and the most exquisite craftsmanship. Simple, elegant, compact, it is the first ever- developed instrument with such exceptional measurement accuracy.

SMART USER

A smart-user instrument for watch measurement. Connect the support to your touchpad, click on start, and the Watch PRO will take care of everything. Absolutely user-friendly!

HIGHEST MEASUREMENT ACCURACY

After calibrating your touchpad against atomic clocks, the Watch PRO will measure the accuracy rate of your caliber with a resolution of 0.1 s/d.

The accuracy of its measurement meets the highest quality requirements of the professional watchmakers.

SMART

You have several calibers, the Watch PRO can record and set its parameters to all your need.

ELEGANT

The utmost care was paid to the design of the support in aluminum.

MULTIPOSITIONAL

Place your caliber on the Watch PRO. You will then easily measure its performances in all different positions in accordance with watchmaking standards. 

CONNECTIVITY Jack 3,5mm (No separate mains supply)

MEASURING RANGE
Rate variation: -200 s/d to +200 s/d (resolution 0,1 s/d) 
Amplitude 80° to 360° (resolution 1°) 
Beat error 0 to 10 ms (resolution 0,1 ms)

## Key features

- Measure rate variation, amplitude, and beat error
- High measurement accuracy (0.1 s/d resolution)
- User-friendly interface
- Record and set parameters for multiple calibers
- Multi-positional measurement
- Aluminum support design

## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/lepsi-watch-pro/id1039889250/reviews.md

### 1/5 — Doesn’t work

*2021-07-01, version 2.30*

Says you need to buy there tool to have it work but when you click on to buy it doesn’t exist and you can’t find it anywhere to buy. So not sure if the company is even still in business.

## Frequently asked questions about LEPSI

### Does LEPSI - Watch PRO work without the LEPSI - Watch PRO support?

No, LEPSI - Watch PRO exclusively functions when connected to the LEPSI - Watch PRO hardware support device. The application is designed to interface with this specific hardware for its measurement capabilities.

### What specific watch caliber performances can LEPSI - Watch PRO measure?

LEPSI - Watch PRO can measure rate variation from -200 s/d to +200 s/d with a resolution of 0.1 s/d. It also measures amplitude from 80° to 360° (resolution 1°) and beat error from 0 to 10 ms (resolution 0.1 ms).

### How accurate are the measurements provided by LEPSI - Watch PRO?

The application offers exceptional measurement accuracy, with a resolution of 0.1 s/d for rate variation. This level of precision meets the highest quality requirements of professional watchmakers.

### Can LEPSI - Watch PRO be used to analyze multiple watches?

Yes, LEPSI - Watch PRO is designed to be smart, allowing users to record and set parameters for all their different calibers. This makes it convenient for users with multiple timepieces.

### What devices is LEPSI - Watch PRO compatible with?

LEPSI - Watch PRO is available for iPhone, iPad, and iPod. It connects to the support via a 3.5mm jack, requiring no separate mains supply.

### How frequently is LEPSI - Watch PRO updated?

The latest version of LEPSI - Watch PRO is 2.30, which was released on March 21, 2018. The app has not received updates since then.

### What is the user sentiment for LEPSI - Watch PRO?

Based on the available data, LEPSI - Watch PRO has a rating of 1.0 stars from 1 rating. This indicates a very low user satisfaction score.

### Is LEPSI - Watch PRO suitable for beginners in watchmaking?

The application is described as user-friendly, with a simple interface to start measurements. However, its reliance on specific hardware and the technical nature of caliber measurement suggest it is primarily for those with some existing knowledge or interest in watchmaking.

## Version history (last 1 release)

### 2.30 — 2018-03-21

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

Improved reliability of the connection with the lightning to jack adapter

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## More apps by LEPSI SARL

- [LEPSI - Watch Analyzer](https://appshunter.io/ios/app/lepsi-watch-analyzer/id905026767)
- [LEPSI - Watch Scope](https://appshunter.io/ios/app/lepsi-watch-scope/id994955418)
- [LEPSI - Watch MAGNETISM](https://appshunter.io/ios/app/lepsi-watch-magnetism/id1080183882)
- [Live Diag](https://appshunter.io/ios/app/live-diag/id1203676085)
- [Analyzer Vacheron](https://appshunter.io/ios/app/analyzer-vacheron/id1438226472)

All apps by LEPSI SARL: https://appshunter.io/developer/590525672

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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 2026-06-10.*