# ClockMaster - Time Regulator

> Pendulum Clock Time Regulation

Canonical page: [https://chrome-stats.com/d/id413901882](https://chrome-stats.com/d/id413901882)

## Overview

- **ID:** `id413901882`
- **Platform:** Apple
- **Type:** Apple app
- **Status:** Available
- **Publisher:** ONYX Apps
- **Category:** Utilities
- **Rating:** 3.80 / 5 (52 ratings)
- **Version:** 3.0.31
- **Last updated:** 2026-03-19
- **First published:** 2011-01-18
- **Size:** 4.86 MB
- **Data as of:** 2026-09-14
- **Store listing:** [Apple App Store](https://apps.apple.com/us/app/clockmaster-time-regulator/id413901882)
- **Privacy policy:** [https://onyx3.com/app-privacy.html](https://onyx3.com/app-privacy.html)

## Description

ClockMaster is a specialized clock timing tool designed for mechanical pendulum clocks. It analyzes the tick of the escapement to calculate Beats Per Hour, compares it to a target rate, and reports drift in seconds per day.

The Pro upgrade unlocks long-term measurements (up to two weeks), branded PDF reports, and CSV export for graphing, enabling field testing, precise regulation, and deeper analysis of clock movement.

## Rankings

- #185,437 — Overall

## Review summary

ClockMaster is praised for accurate beat calibration and pendulum regulation across many clock types, with a simple interface and good hardware compatibility. However, recurring concerns include high/opaque upgrade costs, mic/hardware reliability issues, occasional stability problems after updates, and requests for more in-app data visualizations.

### Pros

- Very effective at calibrating beat and regulating pendulums; users report significant accuracy improvements across cuckoo, mantel, and grandfather clocks.
- Simple, elegant display and intuitive controls that appeal to hobbyists and horologists.
- Flexible mic/hardware support: works with internal mic and with external pickups/accessories to improve accuracy.
- Brings clocks within significant accuracy, often reducing long-term drift across various clock types.
- Broad clock compatibility and usefulness across different clock types, from small mantel clocks to antique grandfather clocks.

### Cons

- Upgrade pricing is high and often unclear what Pro includes.
- Microphone/hardware reliability varies; results depend on mic quality and setup (internal vs external).
- Reliability issues after updates (app or iOS) including freezes or broken functionality.
- Requests for more in-app data/visuals (e.g., drift plots, half-cycle indicators); current visuals are limited.

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Source: [Chrome-Stats](https://chrome-stats.com/d/id413901882)