# Jet Log vs Cairn

The clearest difference is price: Cairn at Free against Jet Log's $5.99. Cairn also leads on ads (none vs shown). Jet Log's advantage is iOS requirement (17.0 vs 26.0). On in-app purchases and device support there is nothing between them.

Cairn is free to download; Jet Log costs $5.99 up front. Jet Log sells 4 in-app purchases, starting at $1.99 per month and Cairn sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | Jet Log | Cairn |
| --- | --- | --- |
| Price | $5.99 | **Free** |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 5 days | — |
| Size | 79 MB | 35 MB |
| Requires iOS | **17.0** | 26.0 |
| Devices | **iPhone, iPad, Mac, Apple Watch** | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Ryohei Horiuchi](https://appshunter.io/developer/1892078310) | [Pham Van Hai](https://appshunter.io/developer/6805783484) |

## What reviewers say

### Jet Log

[App page](https://appshunter.io/ios/app/jet-log-widget-pomodoro-timer/id6785190288)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Jet Log Plus Monthly | $1.99 | per month |
| Jet Log Plus Yearly | $9.99 | per year |
| Support the Developer | $1.99 | one-time |
| Lifetime | $29.99 | one-time |


### Cairn

[App page](https://appshunter.io/ios/app/cairn-focus-and-study-timer/id6811870112)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cairn Pro · Lifetime Unlock | $1.99 | one-time |


## Frequently asked questions

### Is Jet Log free?

Jet Log costs $5.99, and also offers in-app purchases.

### Is Cairn free?

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

### Do Jet Log or Cairn have ads?

Jet Log shows ads; Cairn does not.

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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.*