# Chronometer vs Quietmarks

The clearest difference is price: Chronometer at Free against Quietmarks's $2.99. Quietmarks's advantage is ads (none vs shown) and update cadence (weekly vs every 5 weeks). On in-app purchases and device support there is nothing between them.

Chronometer is free to download; Quietmarks costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Chronometer ships an update every 5 weeks, Quietmarks weekly. Both last shipped on October 8, 2026.

## The numbers

| Metric | Chronometer | Quietmarks |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Weekly** |
| Size | 18 MB | 3 MB |
| Requires iOS | 26.2 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Chathushka Rodrigo](https://appshunter.io/developer/1886060202) | [Robert Corbin](https://appshunter.io/developer/1890247992) |

## What reviewers say

### Chronometer

[App page](https://appshunter.io/ios/app/chronometer-world-clock/id6760746571)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


### Quietmarks

[App page](https://appshunter.io/ios/app/quietmarks-noise-diary/id6777257413)

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

**In-app purchases:** none


## Frequently asked questions

### Is Chronometer free?

Chronometer is free to download, with no in-app purchases.

### Is Quietmarks free?

Quietmarks costs $2.99, with no in-app purchases.

### Do Chronometer or Quietmarks have ads?

Chronometer shows ads; Quietmarks does not.

### Which is updated more often, Chronometer or Quietmarks?

Chronometer ships an update every 5 weeks, and Quietmarks weekly. Most recently, Chronometer was updated on October 8, 2026 and Quietmarks on October 8, 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.*