# GROUPS Calendar vs Shiftool

The clearest difference is ads: GROUPS Calendar at none against Shiftool's shown. GROUPS Calendar also leads on update cadence (every 5 days vs every 2 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. GROUPS Calendar sells 12 one-off in-app purchases and Shiftool sells 2 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

GROUPS Calendar ships an update every 5 days, Shiftool every 2 weeks. The most recent releases landed on September 21, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | GROUPS Calendar | Shiftool |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 5 days** | Every 2 weeks |
| Size | 82 MB | 94 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Luis Alberto Reyes Halaby](https://appshunter.io/developer/1523513037) | [Shiftool SL](https://appshunter.io/developer/1812390523) |

## What reviewers say

### GROUPS Calendar

[App page](https://appshunter.io/ios/app/groups-calendar/id1636101268)

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

**In-app purchases (12)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Component: Alarms Silencer | $0.99 | one-time |
| Component: Variable text | $0.99 | one-time |
| Component: Variable Schedule | $0.99 | one-time |
| Component: Audio | $1.99 | one-time |
| Platinum account | $1.99 | one-time |
| Component: Images | $2.99 | one-time |
| Gold Account | $2.99 | one-time |
| Platinum Account | $3.99 | one-time |
| Silver account | $4.99 | one-time |
| Platinum account | $6.99 | one-time |
| Donation | $9.99 | one-time |
| Donation | $19.99 | one-time |


### Shiftool

[App page](https://appshunter.io/ios/app/shiftool/id6745471193)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium month | $1.99 | per month |
| Premium year | $19.99 | per year |


## Frequently asked questions

### Is GROUPS Calendar free?

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

### Is Shiftool free?

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

### Do GROUPS Calendar or Shiftool have ads?

Shiftool shows ads; GROUPS Calendar does not.

### Which is updated more often, GROUPS Calendar or Shiftool?

GROUPS Calendar ships an update every 5 days, and Shiftool every 2 weeks. Most recently, GROUPS Calendar was updated on September 21, 2026 and Shiftool on September 12, 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.*