# DuchcOFF vs Shift Calendar

The clearest difference is in-app purchases: DuchcOFF at none against Shift Calendar's 2. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Shift Calendar sells 2 in-app purchases, starting at $2.99 per month. DuchcOFF asks for nothing beyond the download.

DuchcOFF ships an update every 2 weeks, Shift Calendar every 3 weeks. Both last shipped on October 31, 2026.

## The numbers

| Metric | DuchcOFF | Shift Calendar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Size | 13 MB | 45 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 17+ | 4+ |
| Developer | [Josef Benes](https://appshunter.io/developer/1413998076) | [anil sancar](https://appshunter.io/developer/1896591475) |

## What reviewers say

### DuchcOFF

[App page](https://appshunter.io/ios/app/duchcoff/id6758988625)

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

**In-app purchases:** none


### Shift Calendar

[App page](https://appshunter.io/ios/app/shift-calendar-shift-cycle/id6797974018)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Pro | $14.99 | one-time |


## Frequently asked questions

### Is DuchcOFF free?

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

### Is Shift Calendar free?

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

### Do DuchcOFF or Shift Calendar have ads?

Neither DuchcOFF nor Shift Calendar shows ads.

### Which is updated more often, DuchcOFF or Shift Calendar?

DuchcOFF ships an update every 2 weeks, and Shift Calendar every 3 weeks. Most recently, DuchcOFF was updated on October 31, 2026 and Shift Calendar on October 31, 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.*