Skew - Watch Accuracy

Skew helps watch enthusiasts measure and track how accurately their watches keep time.

Every watch gains or loses a few seconds each day. Skew lets you measure that drift precisely — and track how it changes over time.

HOW IT WORKS Sync your watch to GPS time, then sync again later — Skew calculates the exact drift rate in seconds per day.

Use the built-in tick detection to check your watch's beat rate — a quick ballpark read without a timing machine.

FEATURES • Manage multiple watches in one place — name, caliber, beats per hour, service history, and notes • Log drift manually with GPS time sync • View drift rate trends over time with clean charts • Track wear sessions — see how much you've worn each watch • Attach photos of certificates and receipts to each watch • Local notifications when a watch exceeds your drift threshold • iCloud sync — your watches and logs available across all your devices

PRIVACY FIRST Your data syncs privately via iCloud. No third-party servers. No tracking. No ads.

Skew is made for the collector who wants real numbers — not just a feeling.