# AIRtimer vs Quad Notes

The clearest difference is ads: AIRtimer at none against Quad Notes's shown. AIRtimer also leads on iOS requirement (9.0 vs 15.8.3). Quad Notes's advantage is update cadence (every 2 weeks vs every 3 months). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

AIRtimer ships an update every 3 months, Quad Notes every 2 weeks. The most recent releases landed on September 9, 2026 and August 3, 2026 respectively.

## The numbers

| Metric | AIRtimer | Quad Notes |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 months | **Every 2 weeks** |
| Size | 51 MB | 37 MB |
| Requires iOS | **9.0** | 15.8.3 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mioris LTD](https://appshunter.io/developer/1334172648) | [Hideaki Uchikoshi](https://appshunter.io/developer/1559575002) |

## What reviewers say

### AIRtimer

[App page](https://appshunter.io/ios/app/airtimerfor-f1a-models/id1476406234)

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

**In-app purchases:** none


### Quad Notes

[App page](https://appshunter.io/ios/app/quad-notes/id6741947436)

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

**In-app purchases:** none


## Frequently asked questions

### Is AIRtimer free?

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

### Is Quad Notes free?

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

### Do AIRtimer or Quad Notes have ads?

Quad Notes shows ads; AIRtimer does not.

### Which is updated more often, AIRtimer or Quad Notes?

AIRtimer ships an update every 3 months, and Quad Notes every 2 weeks. Most recently, AIRtimer was updated on September 9, 2026 and Quad Notes on August 3, 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.*