# Planner by ParthenX vs Cairn

The clearest difference is in-app purchases: Planner by ParthenX at none against Cairn's 3. Planner by ParthenX also leads on ads (none vs shown) and update cadence (daily vs every 5 days). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Cairn sells 3 in-app purchases, starting at $1.99 per month. Planner by ParthenX asks for nothing beyond the download.

Planner by ParthenX ships an update daily, Cairn every 5 days. The most recent releases landed on October 12, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Planner by ParthenX | Cairn |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Daily** | Every 5 days |
| Monetization | Free | — |
| Size | 51 MB | 41 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPod, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Hakan Uyanik](https://appshunter.io/developer/1705797322) | [Heajung Yoo](https://appshunter.io/developer/1895444232) |

## What reviewers say

### Planner by ParthenX

[App page](https://appshunter.io/ios/app/planner-by-parthenx/id6474547279)

This app helps you master time management, track expenses, and build positive habits. It offers a task planner, Pomodoro timer, habit tracker, and expense logging. Enjoy premium features for free to boost your personal and professional growth.

**Highlights:** Task planning and reminders, Pomodoro focus timer, Habit tracking and insights, Expense logging and tracking, Productivity and personal growth content

**In-app purchases:** none


### Cairn

[App page](https://appshunter.io/ios/app/cairn/id6767776784)

**Features:** macOS Compatibility, Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cairn Pro Monthly | $1.99 | per month |
| Cairn Pro yearly | $12.99 | per year |
| Cairn Pro - Ad-free forever | $0.99 | one-time |


## Frequently asked questions

### Is Planner by ParthenX free?

Planner by ParthenX is free to download, with no in-app purchases.

### Is Cairn free?

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

### Do Planner by ParthenX or Cairn have ads?

Cairn shows ads; Planner by ParthenX does not.

### Which is updated more often, Planner by ParthenX or Cairn?

Planner by ParthenX ships an update daily, and Cairn every 5 days. Most recently, Planner by ParthenX was updated on October 12, 2026 and Cairn on October 25, 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.*