# ATB Gym vs FLUID X

The clearest difference is in-app purchases: ATB Gym at none against FLUID X's 6. ATB Gym also leads on update cadence (every 2 months vs every 9 months) and iOS requirement (12.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. FLUID X sells 6 in-app purchases, starting at $5.99 per month. ATB Gym asks for nothing beyond the download.

ATB Gym ships an update every 2 months, FLUID X every 9 months. The most recent releases landed on November 3, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | ATB Gym | FLUID X |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/fluid-x/id6502327233/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | — | Freemium |
| Size | 43 MB | 13 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nci Technology Inc.](https://appshunter.io/developer/868272704) | [Fluid X Limited](https://appshunter.io/developer/1745027064) |

## What reviewers say

### ATB Gym

[App page](https://appshunter.io/ios/app/atb-gym/id1545909487)

**Features:** macOS Compatibility

**In-app purchases:** none


### FLUID X

[App page](https://appshunter.io/ios/app/fluid-x/id6502327233)

This app guides users through aqua bag workouts, offering structured programs and an extensive exercise library. It caters to beginners, functional training enthusiasts, seniors, rehab clients, athletes, and cardio fans, emphasizing dynamic resistance for enhanced core stability and functional strength.

**Highlights:** Structured FX Fitness Programs, Extensive FX Exercise Library with video demonstrations, Educational resources on water bag fitness, Trainer tools, Dynamic resistance training guidance, Core stability and balance enhancement

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fluidx X Coaching Subscription | $5.99 | per month |
| FX Monthly Subscription | $19.99 | per month |
| FX Annual Subscription | $119.99 | per year |
| 99 Tank 20 & Tank 15 Library | $14.95 | one-time |
| 99 Bobas & Cube Library | $14.95 | one-time |
| FX Foundation Course | $191.99 | one-time |


## Frequently asked questions

### Is ATB Gym free?

ATB Gym is free to download, with no in-app purchases.

### Is FLUID X free?

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

### Do ATB Gym or FLUID X have ads?

Neither ATB Gym nor FLUID X shows ads.

### Which is updated more often, ATB Gym or FLUID X?

ATB Gym ships an update every 2 months, and FLUID X every 9 months. Most recently, ATB Gym was updated on November 3, 2026 and FLUID X on November 4, 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.*