# 30 Day Ab Workout Challenge vs Flat Stomach

The clearest difference is review sentiment: Flat Stomach at 100% against 30 Day Ab Workout Challenge's 87%. Flat Stomach also leads on update cadence (every 3 weeks vs every 2 months) and iOS requirement (12.1 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. 30 Day Ab Workout Challenge sells 10 in-app purchases, starting at $0.99 per 7 days and Flat Stomach sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

30 Day Ab Workout Challenge ships an update every 2 months, Flat Stomach every 3 weeks. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | 30 Day Ab Workout Challenge | Flat Stomach |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (668 ratings)](https://appshunter.io/ios/app/30-day-ab-workout-challenge/id1368434056/reviews)** | — |
| Number of ratings | **668** | — |
| Positive reviews | 86.7% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Freemium | Freemium |
| Size | 62 MB | 32 MB |
| Requires iOS | 15.0 | **12.1** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Rumble](https://appshunter.io/developer/1368434055) | [Vigour Group Ltd](https://appshunter.io/developer/1546613605) |

## What reviewers say

### 30 Day Ab Workout Challenge

[App page](https://appshunter.io/ios/app/30-day-ab-workout-challenge/id1368434056)

Achieve a stronger core with a 30-day at-home workout plan. Follow daily exercises with video guides and voice coaching. Includes diet plans and progress tracking for comprehensive fitness.

**Highlights:** 30-day ab and core workout plans, Video demonstrations for 17 exercises, Voice coach for rep counting, Offline workout sessions, 5 diet plans with 258 recipes, Progress tracking (photos, weight, water, steps), Apple Health integration

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ab challenge (Weekly) | $0.99 | per 7 days |
| Weekly Subscription | $0.99 | per 7 days |
| Abs Monthly New | $1.99 | per month |
| Weekly Subscription | $1.99 | per 7 days |
| 30 Day Ab Challenge (Weekly) | $1.99 | per 7 days |
| Monthly Subscription | $5.99 | per month |
| 30 Day Ab Challenge (Monthly) | $8.99 | per month |
| Yearly Subscription | $29.99 | per year |
| Ab challenge & workout | $37.99 | per 6 months |
| Ab challenge & workout | $39.99 | one-time |

**What reviewers like**

- 👍 Effective for building abs
- 🤩 Motivating and pushes users to exercise
- 🎥 Helpful video examples
- 💪 Noticeable results in a short time
- 🤗 Boosts confidence and self-image

**What reviewers complain about**

- 💰 Aggressive upselling to premium features
- 🤔 Questionable age rating for young users
- 🐛 Frequent app crashes and glitches
- 🙄 Beginner workouts are too easy

**Reported bugs**

- Login screen freezes
- Incompatible with older devices

**Requested features**

- Add music options during workouts
- Improve app stability and performance
- Adjust age rating to be more appropriate


### Flat Stomach

[App page](https://appshunter.io/ios/app/flat-stomach-core-exercises/id1571642017)

Build core strength and improve posture with guided, science-backed workouts. Train at home with no equipment needed, progressing from beginner to advanced levels. Track your activity and enjoy audio coaching to enhance your fitness journey.

**Highlights:** Guided core workouts, Beginner, Intermediate, Advanced plans, Activity tracking, Progressive difficulty, Audio coach with volume support, Home workouts, no equipment needed

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Weekly | $0.99 | per 7 days |
| Premium Monthly | $3.49 | per month |
| Premium Yearly | $22.49 | per year |


## Frequently asked questions

### Is 30 Day Ab Workout Challenge free?

30 Day Ab Workout Challenge is free to download, with in-app purchases available.

### Is Flat Stomach free?

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

### Do 30 Day Ab Workout Challenge or Flat Stomach have ads?

Neither 30 Day Ab Workout Challenge nor Flat Stomach shows ads.

### Which is updated more often, 30 Day Ab Workout Challenge or Flat Stomach?

30 Day Ab Workout Challenge ships an update every 2 months, and Flat Stomach every 3 weeks. Most recently, 30 Day Ab Workout Challenge was updated on November 6, 2026 and Flat Stomach on November 3, 2026.

---

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