# コータイム vs Shift Calendar

The clearest difference is ads: Shift Calendar at none against コータイム's shown. コータイム's advantage is iOS requirement (15.1 vs 18.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. コータイム sells 1 one-off in-app purchase and Shift Calendar sells 3 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

コータイム ships an update every 11 days, Shift Calendar weekly. Both last shipped on October 29, 2026.

## The numbers

| Metric | コータイム | Shift Calendar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 11 days | **Weekly** |
| Size | 42 MB | 52 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [TOMA HONDA](https://appshunter.io/developer/6801846846) | [CAN BAYRAKTARBASI](https://appshunter.io/developer/1895609317) |

## What reviewers say

### コータイム

[App page](https://appshunter.io/ios/app/id6804745947)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 広告を削除 | $0.99 | one-time |


### Shift Calendar

[App page](https://appshunter.io/ios/app/shift-calendar-backshift/id6812816170)

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support, iPhone Duo support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Backshift Pro Monthly | $4.99 | per month |
| Backshift Pro Yearly | $24.99 | per year |
| Backshift Pro Lifetime | $79.99 | one-time |


## Frequently asked questions

### Is コータイム free?

コータイム is free to download, with in-app purchases available.

### Is Shift Calendar free?

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

### Do コータイム or Shift Calendar have ads?

コータイム shows ads; Shift Calendar does not.

### Which is updated more often, コータイム or Shift Calendar?

コータイム ships an update every 11 days, and Shift Calendar weekly. Most recently, コータイム was updated on October 29, 2026 and Shift Calendar on October 29, 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.*