# ShiftAlarm vs Kuadri

The clearest difference is update cadence: Kuadri at every 5 days against ShiftAlarm's fortnightly. Kuadri also leads on iOS requirement (16.0 vs 26.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. ShiftAlarm sells 2 in-app purchases, starting at $3.99 per month and Kuadri sells 4 in-app purchases, starting at $14.99 per year. Whichever you choose, the download price is not the number that matters.

ShiftAlarm ships an update fortnightly, Kuadri every 5 days. The most recent releases landed on October 31, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | ShiftAlarm | Kuadri |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Size | 89 MB | 75 MB |
| Requires iOS | 26.0 | **16.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Marcel Nitsch](https://appshunter.io/developer/6791936008) | [Efren Rodriguez Rodriguez](https://appshunter.io/developer/6796747775) |

## What reviewers say

### ShiftAlarm

[App page](https://appshunter.io/ios/app/shiftalarm-shift-calendar/id6791936006)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ShiftAlarm Pro Monthly | $3.99 | per month |
| ShiftAlarm Pro Yearly | $39.99 | per year |


### Kuadri

[App page](https://appshunter.io/ios/app/kuadri-shift-work-calendar/id6796748372)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Kuadri Nube (anual) | $14.99 | per year |
| Kuadri Cloud | $1.00 | one-time |
| Kuadri Cloud | $3.99 | one-time |
| Kuadri Cloud (pago unico) | $29.99 | one-time |


## Frequently asked questions

### Is ShiftAlarm free?

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

### Is Kuadri free?

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

### Do ShiftAlarm or Kuadri have ads?

Neither ShiftAlarm nor Kuadri shows ads.

### Which is updated more often, ShiftAlarm or Kuadri?

ShiftAlarm ships an update fortnightly, and Kuadri every 5 days. Most recently, ShiftAlarm was updated on October 31, 2026 and Kuadri on November 10, 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.*