# SetSum vs OK Calendar

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

Both are free to download. SetSum sells 2 in-app purchases, starting at $6.99 per month. OK Calendar asks for nothing beyond the download.

SetSum ships an update fortnightly, OK Calendar every 11 days. The most recent releases landed on November 9, 2026 and November 10, 2026 respectively.

## The numbers

| Metric | SetSum | OK Calendar |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Fortnightly | **Every 11 days** |
| Size | 39 MB | 52 MB |
| Requires iOS | **15.1** | 16.4 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [SetSum Ltd](https://appshunter.io/developer/1845300624) | [Nikolaos Pinatsis](https://appshunter.io/developer/1832444446) |

## What reviewers say

### SetSum

[App page](https://appshunter.io/ios/app/setsum/id6753862885)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plan | $6.99 | per month |
| Yearly Plan | $59.99 | per year |


### OK Calendar

[App page](https://appshunter.io/ios/app/ok-calendar/id6785077515)

**In-app purchases:** none


## Frequently asked questions

### Is SetSum free?

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

### Is OK Calendar free?

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

### Do SetSum or OK Calendar have ads?

SetSum shows ads; OK Calendar does not.

### Which is updated more often, SetSum or OK Calendar?

SetSum ships an update fortnightly, and OK Calendar every 11 days. Most recently, SetSum was updated on November 9, 2026 and OK Calendar on November 10, 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.*