Unruh - Watch Accuracy

Mechanical Watch Tracker

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Is your mechanical watch running fast or slow? Unruh tells you exactly — down to the fraction of a second. Unruh measures the accuracy of your mechanical watches by comparing them against atomic reference time (NTP). Simply tap when your second hand hits 12, and Unruh instantly calculates how far off your watch is. PRECISION MEASUREMENT • Atomic time reference via NTP synchronization • Offset measurement accurate to fractions of a second • Rate calculation in seconds per day (s/day) • Minute correction for fine-tuning results WATCH COLLECTION • Manage your entire watch collection in one place • Add photos, brand, model, movement & serial number • Track each watch's accuracy individually • Set and compare against accuracy standards INDUSTRY STANDARDS • COSC Chronometer (-4/+6 s/day) • METAS Master Chronometer (0/+5 s/day) • Rolex Superlative (-2/+2 s/day) • General Mechanical (-20/+40 s/day) • See at a glance if your watch meets certification standards ANALYTICS & TRENDS • Offset deviation charts over time • Daily rate trend visualization • 7 and 30 day views included for every watch • Summary statistics with averages, min & max values UNRUH PRO — ONE-TIME PURCHASE, NO SUBSCRIPTION • Unlimited watches (free version: up to 3) • Position tracking: log how each watch rested — dial up, dial down, crown left, crown up, crown down, or on the wrist • Best resting position analysis: find the position that compensates your watch's rate • Full history: 90 day and all-time charts • CSV export for your records • Pay once, keep it forever — and all future Pro features are included DIAGNOSTICS • Timegrapher (Beta): live beat rate and seconds/day via the microphone — free • Magnetism check using the built-in magnetometer — free BUILT FOR WATCH ENTHUSIASTS • Elegant dark mode design with gold accents • Haptic feedback for precise measurements • Daily measurement reminders • Full German & English localization Whether you're a seasoned collector or just curious about your first automatic — Unruh is the precision tool your watches deserve.

  • 4.0
    out of 5
    1 Ratings

Removing a watch is now simple, and you can choose how you capture each measurement. - Delete a watch directly from its detail screen. Deletion is reliable and also removes that watch's measurements. - Set up faster: after onboarding you can add your first watch straight from the dashboard. - Choose your capture style in Settings. Keep tapping when the second hand hits 12, or turn on hold-and-release so you simply let go at the exact moment. - Measurements are timed more precisely, because Unruh now reads the exact instant your finger acts rather than a moment later. - Also fixed: tip names appear in your language, and a couple of German labels are corrected.

The developer, Noel Weinberg, 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, for example, based on the features you use or your age. Learn More

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Seller
    • Noel Weinberg
    Size
    • 5 MB
    Category
    • Utilities
    Compatibility
    Requires iOS 26.0 or later.
    • iPhone
      Requires iOS 26.0 or later.
    • Mac
      Requires macOS 26.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 26.0 or later.
    Languages
    • English and German
    Age Rating
    4+
    In-App Purchases
    Yes
    • A Cappuccino $3.99
    • Coffee & Cake $8.99
    • An Espresso $1.99
    • Unruh Pro $5.99
    Copyright
    • © 2026 1337-Studios