# 21 vs 21 Days Habit Transformation

The clearest difference is ads: 21 Days Habit Transformation at none against 21's shown. 21's advantage is iOS requirement (12.0 vs 15.6). On price, in-app purchases and device support there is nothing between them.

Both are free to download. 21 sells 10 one-off in-app purchases and 21 Days Habit Transformation sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | 21 | 21 Days Habit Transformation |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | — | Every 4 months |
| Size | 34 MB | 113 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Samantha Roobol](https://appshunter.io/developer/1415281405) | [GREWON TECHNOLOGIES PRIVATE LIMITED](https://appshunter.io/developer/1589043091) |

## What reviewers say

### 21

[App page](https://appshunter.io/ios/app/21-day-shape-up-plan/id1574478658)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove ads | $0.99 | one-time |
| Fat Burning HIIT Cardio | $1.99 | one-time |
| Exercises for Beginners | $1.99 | one-time |
| Plank Variation Exercises | $1.99 | one-time |
| Squat Variations | $1.99 | one-time |
| Lose Weight | $1.99 | one-time |
| Thigh Slimming | $1.99 | one-time |
| Lose Belly Fat | $1.99 | one-time |
| Sleek & Sexy Arms | $1.99 | one-time |
| Full Bundle | $4.99 | one-time |


### 21 Days Habit Transformation

[App page](https://appshunter.io/ios/app/21-days-habit-transformation/id6467082746)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Lifetime access | $5.99 | one-time |


## Frequently asked questions

### Is 21 free?

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

### Is 21 Days Habit Transformation free?

21 Days Habit Transformation is free to download, with in-app purchases available.

### Do 21 or 21 Days Habit Transformation have ads?

21 shows ads; 21 Days Habit Transformation does not.

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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.*