# Shift Calendar Alarm vs ShiftAlarm

The clearest difference is in-app purchases: ShiftAlarm at none against Shift Calendar Alarm's 2. ShiftAlarm also leads on iOS requirement (17.0 vs 26.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Shift Calendar Alarm sells 2 in-app purchases, starting at $0.99 per month. ShiftAlarm asks for nothing beyond the download.

Shift Calendar Alarm ships an update every 2 weeks, ShiftAlarm weekly. The most recent releases landed on September 27, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Shift Calendar Alarm | ShiftAlarm |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 6 MB | 20 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [PING CHANG YU](https://appshunter.io/developer/1884515149) | [明 刘](https://appshunter.io/developer/6790996791) |

## What reviewers say

### Shift Calendar Alarm

[App page](https://appshunter.io/ios/app/shift-calendar-alarm/id6760447926)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Shift Alarm Premium Monthly | $0.99 | per month |
| Shift Alarm Premium Yearly | $8.99 | per year |


### ShiftAlarm

[App page](https://appshunter.io/ios/app/shiftalarm-work-schedule/id6791030721)

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

**In-app purchases:** none


## Frequently asked questions

### Is Shift Calendar Alarm free?

Shift Calendar Alarm is free to download, with in-app purchases available.

### Is ShiftAlarm free?

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

### Do Shift Calendar Alarm or ShiftAlarm have ads?

Neither Shift Calendar Alarm nor ShiftAlarm shows ads.

### Which is updated more often, Shift Calendar Alarm or ShiftAlarm?

Shift Calendar Alarm ships an update every 2 weeks, and ShiftAlarm weekly. Most recently, Shift Calendar Alarm was updated on September 27, 2026 and ShiftAlarm 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.*