# CalmCatch vs One Thing

The clearest difference is in-app purchases: One Thing at none against CalmCatch's 2. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CalmCatch sells 2 in-app purchases, starting at $7.99 per month. One Thing asks for nothing beyond the download.

## The numbers

| Metric | CalmCatch | One Thing |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/calmcatch-adhd-planner/id6783648659/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | — |
| Monetization | Free with in-app purchases | — |
| Size | 6 MB | 3 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [敏 刘](https://appshunter.io/developer/6783576055) | [斌 华](https://appshunter.io/developer/6771842850) |

## What reviewers say

### CalmCatch

[App page](https://appshunter.io/ios/app/calmcatch-adhd-planner/id6783648659)

This app helps manage overwhelming thoughts and tasks with a simple capture-first approach. It transforms scattered ideas into actionable tasks, scheduled events, and organized notes, making it easier to manage ADHD-style planning.

**Highlights:** Brain dump for messy thoughts, Task overload management, Capture first, organize later workflow, Separates thoughts into tasks, events, notes, ADHD-style planning support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calm Catch Pro Month | $7.99 | per month |
| Calm Catch Pro Year | $49.99 | per year |


### One Thing

[App page](https://appshunter.io/ios/app/one-thing-one-task-focus/id6789054961)

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

**In-app purchases:** none


## Frequently asked questions

### Is CalmCatch free?

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

### Is One Thing free?

One Thing is free to download, with no in-app purchases.

### Do CalmCatch or One Thing have ads?

Neither CalmCatch nor One Thing shows ads.

---

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