# Flat Stomach Workouts vs Workouts challenge

The clearest difference is in-app purchases: Workouts challenge at none against Flat Stomach Workouts's 11. Workouts challenge also leads on ads (none vs shown) and update cadence (every 10 days vs every 5 weeks). Flat Stomach Workouts's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 17.0). On price there is nothing between them.

Both are free to download. Flat Stomach Workouts sells 11 in-app purchases, starting at $0.99 per month. Workouts challenge asks for nothing beyond the download.

Flat Stomach Workouts ships an update every 5 weeks, Workouts challenge every 10 days. The most recent releases landed on October 14, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Flat Stomach Workouts | Workouts challenge |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 5 weeks | **Every 10 days** |
| Monetization | Free with in-app purchases | — |
| Size | 141 MB | 1 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Loyal Health & Fitness, Inc.](https://appshunter.io/developer/1088263310) | [Daniel Plata](https://appshunter.io/developer/1467546479) |

## What reviewers say

### Flat Stomach Workouts

[App page](https://appshunter.io/ios/app/flat-stomach-workouts/id889654541)

Achieve a flatter stomach with targeted abdominal exercises that require no equipment. This app offers customized weekly routines and HD instructional videos to guide you. Enhance your experience with motivating audio guidance and DJ mixes.

**Highlights:** No equipment required, Customized weekly workouts, HD instructional videos, Audio guidance from trainer, Offline workout access, DJ-mixed motivating workouts

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $0.99 | per month |
| Fitivity Premium | $1.99 | per month |
| ad Free One Month | $1.99 | per month |
| Yearly Subscription | $5.99 | per year |
| Yearly Subscription | $9.49 | per year |
| Entire Program - Flat Stomach | $4.99 | one-time |
| Entire Program - Six Pack | $4.99 | one-time |
| Entire Program - 8 Minute Abs | $4.99 | one-time |
| Entire Program - Lower Abs | $4.99 | one-time |
| Purchase levels of all programs | $14.99 | one-time |
| Lifetime Premium Subscription | $299.99 | one-time |


### Workouts challenge

[App page](https://appshunter.io/ios/app/workouts-challenge/id6503666166)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Flat Stomach Workouts free?

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

### Is Workouts challenge free?

Workouts challenge is free to download, with no in-app purchases.

### Do Flat Stomach Workouts or Workouts challenge have ads?

Flat Stomach Workouts shows ads; Workouts challenge does not.

### Which is updated more often, Flat Stomach Workouts or Workouts challenge?

Flat Stomach Workouts ships an update every 5 weeks, and Workouts challenge every 10 days. Most recently, Flat Stomach Workouts was updated on October 14, 2026 and Workouts challenge on October 7, 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.*