# One Thing vs First Thingy

The clearest difference is in-app purchases: First Thingy at none against One Thing's 2. First Thingy also leads on iOS requirement (15.1 vs 26.2). On price, ads and device support there is nothing between them.

Both are free to download. One Thing sells 2 in-app purchases, starting at $0.99 per year. First Thingy asks for nothing beyond the download.

## The numbers

| Metric | One Thing | First Thingy |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 weeks | — |
| Size | 6 MB | 36 MB |
| Requires iOS | 26.2 | **15.1** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Stefan Mattis](https://appshunter.io/developer/1882107507) | [ANTON KENT GUNNAR KARLSSON](https://appshunter.io/developer/1776913881) |

## What reviewers say

### One Thing

[App page](https://appshunter.io/ios/app/one-thing-one-focus/id6759986499)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Yearly | $0.99 | per year |
| Forever Pro | $2.99 | one-time |


### First Thingy

[App page](https://appshunter.io/ios/app/first-thingy/id6761781989)

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

**In-app purchases:** none


## Frequently asked questions

### Is One Thing free?

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

### Is First Thingy free?

First Thingy is free to download, with no in-app purchases.

### Do One Thing or First Thingy have ads?

Neither One Thing nor First Thingy shows ads.

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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.*