# yACK FAST vs Dued App

The clearest difference is update cadence: Dued App at fortnightly against yACK FAST's every 2 months. On price, ads, 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.

yACK FAST ships an update every 2 months, Dued App fortnightly. The most recent releases landed on November 6, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | yACK FAST | Dued App |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Fortnightly** |
| Size | 9 MB | 45 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Serialio Ltd.](https://appshunter.io/developer/333178140) | [Magna Food, Health & Safety Ltd](https://appshunter.io/developer/1554995019) |

## What reviewers say

### yACK FAST

[App page](https://appshunter.io/ios/app/yack-fast/id1166008825)

**Features:** macOS Compatibility

**In-app purchases:** none


### Dued App

[App page](https://appshunter.io/ios/app/dued-app/id1554995017)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is yACK FAST free?

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

### Is Dued App free?

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

### Do yACK FAST or Dued App have ads?

Neither yACK FAST nor Dued App shows ads.

### Which is updated more often, yACK FAST or Dued App?

yACK FAST ships an update every 2 months, and Dued App fortnightly. Most recently, yACK FAST was updated on November 6, 2026 and Dued App on November 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.*