# This One Thing vs Just One

The clearest difference is price: Just One at Free against This One Thing's $4.99. Just One also leads on update cadence (daily vs every 6 weeks) and iOS requirement (15.6 vs 26.0). On ads, in-app purchases and device support there is nothing between them.

Just One is free to download; This One Thing costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

This One Thing ships an update every 6 weeks, Just One daily. The most recent releases landed on October 1, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | This One Thing | Just One |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Daily** |
| Size | 1 MB | 18 MB |
| Requires iOS | 26.0 | **15.6** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nikola Knezevic](https://appshunter.io/developer/1774051159) | [Raving Code](https://appshunter.io/developer/1769017948) |

## What reviewers say

### This One Thing

[App page](https://appshunter.io/ios/app/this-one-thing-single-task/id6753627958)

**Features:** macOS Compatibility

**In-app purchases:** none


### Just One

[App page](https://appshunter.io/ios/app/just-one-one-task-at-a-time/id6764329092)

**In-app purchases:** none


## Frequently asked questions

### Is This One Thing free?

This One Thing costs $4.99, with no in-app purchases.

### Is Just One free?

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

### Do This One Thing or Just One have ads?

Neither This One Thing nor Just One shows ads.

### Which is updated more often, This One Thing or Just One?

This One Thing ships an update every 6 weeks, and Just One daily. Most recently, This One Thing was updated on October 1, 2026 and Just One on October 7, 2026.

---

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