# TimingMachine vs Dozen Clock

The clearest difference is price: Dozen Clock at $1.99 against TimingMachine's $8.99. Dozen Clock also leads on update cadence (every 2 days vs every 11 days) and device support (5 vs 2). On ads and in-app purchases there is nothing between them.

TimingMachine costs $8.99 and Dozen Clock $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

TimingMachine ships an update every 11 days, Dozen Clock every 2 days. The most recent releases landed on September 21, 2026 and August 7, 2026 respectively.

## The numbers

| Metric | TimingMachine | Dozen Clock |
| --- | --- | --- |
| Price | $8.99 | **$1.99** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 days | **Every 2 days** |
| Monetization | Paid | — |
| Size | 32 MB | 2 MB |
| Requires iOS | 26.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [keywerks GmbH](https://appshunter.io/developer/1336049861) | [Gergo Blasko](https://appshunter.io/developer/1767828070) |

## What reviewers say

### TimingMachine

[App page](https://appshunter.io/ios/app/timingmachine/id1499524052)

This tool helps determine and compare engine timing for 2-stroke engines. It calculates piston positions, the effect of spacers, and offers graphical representations. Results can be exported as PDF or with custom text and images.

**Highlights:** Convert measurements to engine timings, Convert engine timings to measurements, Compare engine timings, Calculate cylinder spacer effects, Graphical representation of timings, Export results as PDF, Snapshot function for storing setups

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Dozen Clock

[App page](https://appshunter.io/ios/app/dozen-clock/id6733246889)

**Features:** Apple Watch app

**In-app purchases:** none


## Frequently asked questions

### Is TimingMachine free?

TimingMachine costs $8.99, with no in-app purchases.

### Is Dozen Clock free?

Dozen Clock costs $1.99, with no in-app purchases.

### Do TimingMachine or Dozen Clock have ads?

Neither TimingMachine nor Dozen Clock shows ads.

### Which is updated more often, TimingMachine or Dozen Clock?

TimingMachine ships an update every 11 days, and Dozen Clock every 2 days. Most recently, TimingMachine was updated on September 21, 2026 and Dozen Clock on August 7, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*