# AFR Alerting vs Shift Work Calendar

The clearest difference is in-app purchases: AFR Alerting at none against Shift Work Calendar's 4. AFR Alerting also leads on ads (none vs shown) and iOS requirement (12.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. Shift Work Calendar sells 4 one-off in-app purchases. AFR Alerting asks for nothing beyond the download.

AFR Alerting ships an update every 2 weeks, Shift Work Calendar every 9 days. The most recent releases landed on October 19, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | AFR Alerting | Shift Work Calendar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Size | 64 MB | 134 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mach Alert Inc.](https://appshunter.io/developer/1472612618) | [Salomo Interiors S.L.](https://appshunter.io/developer/1688530007) |

## What reviewers say

### AFR Alerting

[App page](https://appshunter.io/ios/app/afr-alerting/id1589473308)

**Features:** macOS Compatibility

**In-app purchases:** none


### Shift Work Calendar

[App page](https://appshunter.io/ios/app/shift-work-calendar-simple/id6751168161)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| Premium | $1.99 | one-time |
| Unlock All | $1.99 | one-time |
| Unlock All + Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is AFR Alerting free?

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

### Is Shift Work Calendar free?

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

### Do AFR Alerting or Shift Work Calendar have ads?

Shift Work Calendar shows ads; AFR Alerting does not.

### Which is updated more often, AFR Alerting or Shift Work Calendar?

AFR Alerting ships an update every 2 weeks, and Shift Work Calendar every 9 days. Most recently, AFR Alerting was updated on October 19, 2026 and Shift Work Calendar on October 25, 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.*