Cuckoo Clock Calibration

Cuckoo Clock Calibration

by Nir Hamzani

36 ratings
68 reviews
#79 in paid Utilities
🔧 Utilities
📊 Productivity
$0.99

Details

  • Released
  • Updated
  • November 9, 2016
  • August 1, 2020

Features

Cuckoo Clock Calibration video #1 for iPhone
Cuckoo Clock Calibration screenshot #2 for iPhone
Cuckoo Clock Calibration screenshot #3 for iPhone
Cuckoo Clock Calibration screenshot #4 for iPhone
Cuckoo Clock Calibration screenshot #5 for iPhone
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About

This app transforms your iPhone into a highly accurate sensor for calibrating cuckoo and pendulum clocks. It measures clock beats, calculates daily gain or loss, and guides you through precise adjustments for optimal timekeeping.

✓Precise clock beat period measurement
✓Daily gain/loss calculation
✓Train count sensor with 1μs accuracy
✓Adjustable signal gain and detection threshold
✓Reference timing table with user-defined clocks
✓Waveform display for tick readings
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What users say

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What's New in Cuckoo Clock Calibration

2.8

August 1, 2020

A digital clock display was added to enable easy current time reading

Charts

Top Paid

📉 79-7

Utilities

This app dropped -7 positions in Utilities chart.

Last updated on October 14, 2026.

User reviews

Grandfather Clock is finally working

I had an issue with my grandfather clock, which had a misaligned crutch and pendulum.
With this app I could align the clock so it started running. With help of a YouTube video I found out how to bend it to align. After that I used the app to position the clock correctly.

Finally

This simple app shouldn't be so hard to find. My god it's just a low frequency hertz meter. It works perfectly. Hopefully it's accurate. Saved $49 from the other option

Tolle App für Pendulen und …

andere Pendeluhren.. Das Einzige, was mir fehlt ist eine akkurate Anzeige der Beat-Frequenz - gemeint ist: wenn das Pendel nicht gleichmäßig läuft, sieht man das zwar im durchlaufenden Display, aber man hat keine Regulierungsmöglichkeit dafür. und ein gleichmäßiger Pendelschlag ist eine Grundvoraussetzung für eine genau gehende Uhr.. Vielleicht lässt sich das noch implenentieren?!? Trotzdem gibt es volle 5 Sterne dafür.
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Missing?

My app would be more helpful if it showed the level indicator. How can I install this please?

Great timepiece audio analyser

Got this to calibrate a few old stopwatches and clocks. It works super well. Gives instant readings of accuracy instead of just long winded trial and error. It’s important to get the gain and threshold set right plus phone positioning relative to timepieces. Quiet environment helps also. It simply listens to the tick tock then gives you the data you need. Fantastic app. Thanks.
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Developer apps

User experience

🐞

Reported Bugs

7 issues

App closes after setting reference

Bug

App crashes on startup after reference beat memory use

Bug

App crashes

Bug

App crashes and requires reinstallation

Bug

App crashes on iPhone 6s

Bug

App crashes on iPhone 7+

Bug

App crashes on iPhone 6s (v 12.4.1)

Bug
✨

Requested Features

20 requests

Accurate beat frequency display

Feature

Level indicator display

Feature

External microphone support

Feature

Plot period over time

Feature

Allow reference periods over 1 second

Feature

Save measurement data

Feature

Allow frequency of 60.000 BPM

Feature

Repackage/rename for all mechanical clocks

Feature

Add Russian language

Feature

Add parameters for specific Swiss and Soviet clocks

Feature

Add lower beats per minute (e.g., 8 BPM)

Feature

Add a distribution chart for beats

Feature

Add seconds lost/gained per day display

Feature

Broader clock options/community sharing of references

Feature

More user-input references

Feature

Better graph or display for out of beat

Feature

Allow input reference beat rate directly by digits

Feature

Add a feature to help get the clock in beat (e.g., which way to bend crutch)

Feature

Invert display option

Feature

Explanation of calculations for drift and instantaneous beat

Feature

FAQ

What does the Cuckoo Clock Calibration app do?

This app turns your iPhone into a precise sensor to measure the beat period of cuckoo and pendulum clocks. It helps you calculate how much time your clock gains or loses per day and guides you through adjusting the pendulum for optimal accuracy.

How accurate is the app for measuring clock beats?

The app boasts an impressive accuracy of 0.001 milliseconds (1μs), allowing for highly precise measurements of your clock's ticks. This level of accuracy is crucial for fine-tuning mechanical clocks.

Is this app free to use?

Yes, the application is available for free. There are no in-app purchases or advertisements mentioned, making it a completely free utility for clock calibration.

What kind of clocks can I calibrate with this app?

The app is specifically designed for the calibration of cuckoo clocks and pendulum clocks. It provides a reference timing table that includes predefined clocks and allows you to add your own custom clock definitions.

How do I use the app to calibrate my clock?

You'll use your iPhone's microphone to measure your clock's timings. The app provides sliders to adjust signal gain and detection threshold, a reference timing table, and displays your clock's accuracy. You then manually adjust your clock's pendulum based on the app's guidance.