# One Habit vs TwentyOne

The clearest difference is update cadence: TwentyOne at every 2 days against One Habit's every 6 days. One Habit's advantage is iOS requirement (13.3 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. One Habit sells 3 in-app purchases, starting at $2.99 per month and TwentyOne sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

One Habit ships an update every 6 days, TwentyOne every 2 days. The most recent releases landed on October 31, 2026 and November 8, 2026 respectively.

## The numbers

| Metric | One Habit | TwentyOne |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 6 days | **Every 2 days** |
| Size | 56 MB | 5 MB |
| Requires iOS | **13.3** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 12+ | 4+ |
| Developer | [伟基 陶](https://appshunter.io/developer/1872855313) | [Aleksandr Pustotin](https://appshunter.io/developer/1854093247) |

## What reviewers say

### One Habit

[App page](https://appshunter.io/ios/app/one-habit-routine-tracker/id6758465304)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Premium | $2.99 | per month |
| Yearly Premium | $14.99 | per year |
| Lifetime Premium | $29.99 | one-time |


### TwentyOne

[App page](https://appshunter.io/ios/app/twentyone-habit-tracker/id6763133927)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cup of Coffee | $0.99 | one-time |
| Large Cup of Coffee | $2.99 | one-time |


## Frequently asked questions

### Is One Habit free?

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

### Is TwentyOne free?

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

### Do One Habit or TwentyOne have ads?

Neither One Habit nor TwentyOne shows ads.

### Which is updated more often, One Habit or TwentyOne?

One Habit ships an update every 6 days, and TwentyOne every 2 days. Most recently, One Habit was updated on October 31, 2026 and TwentyOne on November 8, 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.*