# Cairn vs Jottle

The clearest difference is device support: Jottle at 4 against Cairn's 1. Cairn's advantage is iOS requirement (18.0 vs 26.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Cairn sells 1 one-off in-app purchase and Jottle sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Cairn ships an update every 2 weeks, Jottle weekly. Both last shipped on October 31, 2026.

## The numbers

| Metric | Cairn | Jottle |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Weekly** |
| Size | 22 MB | 6 MB |
| Requires iOS | **18.0** | 26.0 |
| Devices | iPhone | **iPhone, iPad, Mac, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Dennis Hodgson](https://appshunter.io/developer/6776312396) | [Mike Shear](https://appshunter.io/developer/6776302598) |

## What reviewers say

### Cairn

[App page](https://appshunter.io/ios/app/cairn-screen-time-blocker/id6790536467)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cairn Unlock | $19.99 | one-time |


### Jottle

[App page](https://appshunter.io/ios/app/jottle/id6793571715)

**Features:** Family Sharing, Apple Watch app, iPhone Duo support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 14-Day Trial | Free | one-time |
| Jottle for Mac | $9.99 | one-time |


## Frequently asked questions

### Is Cairn free?

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

### Is Jottle free?

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

### Do Cairn or Jottle have ads?

Neither Cairn nor Jottle shows ads.

### Which is updated more often, Cairn or Jottle?

Cairn ships an update every 2 weeks, and Jottle weekly. Most recently, Cairn was updated on October 31, 2026 and Jottle on October 31, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*