ONEOF Accuracy 4+

Take care of your watch‪.‬

Jean-Charles ROUSSET

Designed for iPad

    • 4.5 • 4 Ratings
    • Free



Unlock the full potential of your mechanical watch with ONEOF® Accuracy. Get all the pro features used by Swiss watchmakers on your iOS device today.

Introducing ONEOF® Accuracy, the high-end integrated tool that provides a complete diagnosis of your mechanical watch on your Apple device. Developed by Swiss watch experts, ONEOF® Accuracy offers unparalleled precision and accuracy in identifying issues with your watch's performance.

Simply place the crown of your watch against a ONEOF® Accuracy sensor, and after a few seconds of initialization, you'll get all the detailed technical information about your watch, including rate accuracy, amplitude, beats per hour, signal analyzer, and graph. The user-friendly app lets you save all the results in your watch database, making it easy to track your watch's performance over time.

With ONEOF® Accuracy, watch aficionados can now have access to the same level of diagnostic instruments used by Swiss watch manufacturers. Whether you're a watch lover or a watchmaker, there's a device for you:

ONEOF® Accuracy²: pocket-sized acoustic measurement device for watch lovers.
ONEOF® Accuracy Boutique Edition: acoustic measurement device with an integrated demagnetizer for watch boutiques and watch lovers.
ONEOF® Accuracy Pro: manual multi-position measurement device for watchmakers.
ONEOF® Accuracy Motion: motorized multi-position measurement device for watchmakers.

Please note that for accurate results, it's important to use a dedicated ONEOF® Accuracy sensor. Simple headsets won't work, and if you decide to use a DIY sensor, the measurement duration is limited to 30 seconds.

Take your watch maintenance to the next level with ONEOF® Accuracy. Download the app now and experience the precision and accuracy that only Swiss watch experts can provide. Visit to get your ONEOF® Accuracy device today.

What’s New

Version 4.1

Improve calibration process for the ONEOF® Accuracy 1st generation.
Fix a bug that was causing issues with certain actions in the test sequence.

Ratings and Reviews

4.5 out of 5
4 Ratings

4 Ratings

martannasuisse ,

Fantastic !

Absolute must have for all mechanic watch lovers
Thank you ONEOF

Adi28 ,

Perte données

Depuis la dernière mise à jour j’ai perdu toutes mes données d’enregistrement de montres
Est-ce normal?!

Developer Response ,

Bonjour, non ce n'est pas normal. Pouvez-vous prendre contact avec nous via notre site web pour que l'on investigue le problème ? Merci d'avance.

Jack Stark (Official) ,

Efficace, puissant, excellent rapport qualité/peix

Très bon algorithme de "détection" des bruits de l'Echappement, fiable, interface épurée qu'on apprécie tout en étant puissante.
Attention toutefois de mettre le téléphone sur le mode "Avion" pour ne pas interrompre vos longues durées !
Seul regret: pas de graphe en portrait pour les iPhones 6+...

App Privacy

The developer, Jean-Charles ROUSSET, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy.

Data Not Collected

The developer does not collect any data from this app.

Privacy practices may vary based on, for example, the features you use or your age. Learn More

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