# MOSSA On Demand vs FitBODY with Kat

The clearest difference is ads: MOSSA On Demand at none against FitBODY with Kat's shown. MOSSA On Demand also leads on ratings volume (829 vs 2). On price, rating, update cadence and in-app purchases there is nothing between them.

Both are free to download. MOSSA On Demand sells 3 in-app purchases, starting at $24.99 per month and FitBODY with Kat sells 4 in-app purchases, starting at $14.99 per month. Whichever you choose, the download price is not the number that matters.

FitBODY with Kat holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: MOSSA On Demand has 829 ratings behind it against 2, so its average is the more settled of the two.

MOSSA On Demand ships an update monthly, FitBODY with Kat every 6 weeks. The most recent releases landed on November 11, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | MOSSA On Demand | FitBODY with Kat |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (829 ratings)](https://appshunter.io/ios/app/mossa-on-demand/id1274712968/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/fitbody-with-kat/id1521240455/reviews)** |
| Number of ratings | **829** | 2 |
| Positive reviews | 71.2% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 68 MB | 92 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | **iPhone, iPad, Apple TV, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mossa](https://appshunter.io/developer/1274712967) | [Katherine MacKinnon](https://appshunter.io/developer/1554586247) |

## What reviewers say

### MOSSA On Demand

[App page](https://appshunter.io/ios/app/mossa-on-demand/id1274712968)

Access a wide variety of on-demand fitness and movement health workouts designed for all levels. Enjoy professionally crafted routines with motivating music and expert coaches, whether you're a beginner or an experienced athlete. Improve your resilience and feel better in your body with flexible workout durations and recovery sessions.

**Highlights:** Variety of workout styles, Movement Health focus, Motivating music and coaches, Flexible workout durations, Recovery and work-in sessions, Personalized workout calendar

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $24.99 | per month |
| MOSSA Monthly | $24.99 | per month |
| MOSSA Annual | $179.99 | per year |

**What reviewers like**

- 🚀 Amazing at-home workout experience
- 👍 Variety of workout options and programs
- 🤩 Excellent instructors and music
- 💪 Effective and transformative workouts
- 🏠 Convenient to work out at home

**What reviewers complain about**

- 🐛 App navigation and user experience issues
- 🔍 Difficulty finding and accessing desired workouts
- 🔀 Automatic transition to next workout without control
- 🖥️ Compatibility issues with smart TVs and casting
- 📚 Lack of workout tracking and personalization features

**Reported bugs**

- Frequent login issues and account management problems
- Playback controls and full-screen mode not working as expected
- Compatibility issues with certain devices and platforms

**Requested features**

- Ability to organize and bookmark favorite workouts
- Workout calendars and progress tracking
- More frequent content updates and new workout additions
- Improved app navigation and filtering options
- Better integration with smart home devices and TVs


### FitBODY with Kat

[App page](https://appshunter.io/ios/app/fitbody-with-kat/id1521240455)

Achieve your health and fitness goals with guided workouts and a healthy eating guide. Offers a variety of workout styles, challenges, and progress tracking. Connect with a supportive community and a fitness professional with over 35 years of experience.

**Highlights:** Variety of workout options (weights/no weights), Targeted workout programs, Healthy eating guide and tips, Progress tracking, Community support group, Challenges and motivation

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $14.99 | per month |
| Quarterly | $39.99 | per 3 months |
| Annual | $129.99 | per year |
| Lifetime Access | $199.99 | one-time |


## Frequently asked questions

### Is MOSSA On Demand free?

MOSSA On Demand is free to download, with in-app purchases available.

### Is FitBODY with Kat free?

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

### Which has better reviews, MOSSA On Demand or FitBODY with Kat?

FitBODY with Kat is rated higher. MOSSA On Demand averages 4.8 out of 5 from 829 ratings, while FitBODY with Kat averages 5.0 from 2 ratings.

### Do MOSSA On Demand or FitBODY with Kat have ads?

FitBODY with Kat shows ads; MOSSA On Demand does not.

### Which is updated more often, MOSSA On Demand or FitBODY with Kat?

MOSSA On Demand ships an update monthly, and FitBODY with Kat every 6 weeks. Most recently, MOSSA On Demand was updated on November 11, 2026 and FitBODY with Kat on November 3, 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.*