Every watch, beautifully kept.
Photos, reference and serial numbers, movement, calibre and purchase details, plus a wishlist and the pieces you have sold. Every watch gets a dial drawn in its own colors.
FOR PEOPLE WHO LOVE WATCHES
Horology keeps every watch you own in one beautiful place. Log what is on your wrist, measure how accurate each watch really is, and know when it is due for service.
Coming soon to the App Store, in English.
See how it works
THE APP
Horology brings together the things collectors usually keep in spreadsheets, notes and separate apps.
Photos, reference and serial numbers, movement, calibre and purchase details, plus a wishlist and the pieces you have sold. Every watch gets a dial drawn in its own colors.
Log today's watch in a tap and keep your streak going. Not sure what to wear? Pick for me favors the watches that have waited longest for wrist time.
Time Check compares your watch with atomic time over a day. The Timegrapher listens to the escapement through your iPhone's microphone for rate, beat error and amplitude.
ACCURACY
Follow each watch's rate over time, see how it runs in six positions, and find out which piece in your collection keeps the best time.

MORE TO LOVE
Horology is free to start with up to three watches. Horology Pro unlocks unlimited watches, the Timegrapher, Insights, accuracy history, service reminders, exports and Studio photos.
Cost per wear, a rotation score, collection value and the days you reach for each watch.
Log every service and battery change, and get a reminder when the next one is due for that movement.
See and log today's watch from Apple Watch, the Home Screen and the Lock Screen.
Export a polished PDF report of your collection, or a spreadsheet of every detail.
Your collection stays on your iPhone, with no account to create. Microphone audio is analyzed on your device and never recorded.
Horology's Timegrapher uses your iPhone's microphone, so its readings are a helpful guide rather than a lab measurement. A watchmaker's timegrapher remains the reference for regulation and service decisions.
Watch names shown are examples and belong to their owners. Horology is not affiliated with any watch brand.
COMING SOON
Horology is getting ready for the App Store, for iPhone and Apple Watch.