# The 30 Day Abs Challenge vs 21

The 30 Day Abs Challenge and 21 are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. The 30 Day Abs Challenge sells 10 one-off in-app purchases and 21 sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | The 30 Day Abs Challenge | 21 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.9 (9 ratings)](https://appshunter.io/ios/app/the-30-day-abs-challenge/id1358302046/reviews)** | — |
| Number of ratings | **9** | — |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 12 months | — |
| Monetization | Free with in-app purchases | — |
| Size | 33 MB | 34 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Stefan Roobol](https://appshunter.io/developer/1002996460) | [Samantha Roobol](https://appshunter.io/developer/1415281405) |

## What reviewers say

### The 30 Day Abs Challenge

[App page](https://appshunter.io/ios/app/the-30-day-abs-challenge/id1358302046)

This 30-day challenge offers daily workouts designed to help you lose belly fat and sculpt your core. It's suitable for all fitness levels, from beginners to advanced users, and requires minimal equipment.

**Highlights:** 30-day flat belly challenge, Daily effective workouts, Sculpt six-pack abs, Reshape your core, Suitable for beginners, Minimal equipment required

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $0.99 | one-time |
| Create Workouts | $0.99 | one-time |
| For Beginners | $1.99 | one-time |
| Abs & Squats | $1.99 | one-time |
| Intense Ab Attack - Flat Belly | $1.99 | one-time |
| Abs, Butt & Thighs Workout | $1.99 | one-time |
| Burn Belly Fat | $1.99 | one-time |
| Exercises For A Stronger Core | $1.99 | one-time |
| Create Challenges | $2.99 | one-time |
| Full Bundle | $4.99 | one-time |


### 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 |


## Frequently asked questions

### Is The 30 Day Abs Challenge free?

The 30 Day Abs Challenge is free to download, with in-app purchases available.

### Is 21 free?

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

### Do The 30 Day Abs Challenge or 21 have ads?

Both The 30 Day Abs Challenge and 21 show 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.*