# Donut timer vs Hz Lab

The clearest difference is ads: Hz Lab at none against Donut timer's shown. Donut timer's advantage is update cadence (every 5 days vs every 2 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Donut timer sells 1 one-off in-app purchase and Hz Lab sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Donut timer ships an update every 5 days, Hz Lab every 2 weeks. The most recent releases landed on October 16, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Donut timer | Hz Lab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Size | 4 MB | 2 MB |
| Requires iOS | **16.6** | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Hiroyuki Kako](https://appshunter.io/developer/1581721316) | [Daishi Sugawara](https://appshunter.io/developer/6783803841) |

## What reviewers say

### Donut timer

[App page](https://appshunter.io/ios/app/donut-timer/id6743337777)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告永久削除 | $2.99 | one-time |


### Hz Lab

[App page](https://appshunter.io/ios/app/hz-lab-frequency-generator/id6802062892)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hz Lab Pro | $1.99 | one-time |


## Frequently asked questions

### Is Donut timer free?

Donut timer is free to download, with in-app purchases available.

### Is Hz Lab free?

Hz Lab is free to download, with in-app purchases available.

### Do Donut timer or Hz Lab have ads?

Donut timer shows ads; Hz Lab does not.

### Which is updated more often, Donut timer or Hz Lab?

Donut timer ships an update every 5 days, and Hz Lab every 2 weeks. Most recently, Donut timer was updated on October 16, 2026 and Hz Lab on October 15, 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.*