# FLUID X vs Project S Studio

The clearest difference is in-app purchases: Project S Studio at none against FLUID X's 6. On price, update cadence, 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. Project S Studio asks for nothing beyond the download.

FLUID X ships an update every 9 months, Project S Studio every 7 months. The most recent releases landed on August 31, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | FLUID X | Project S Studio |
| --- | --- | --- |
| 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 | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 7 months** |
| Monetization | Freemium | — |
| Size | 13 MB | 55 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fluid X Limited](https://appshunter.io/developer/1745027064) | [Momence, Inc.](https://appshunter.io/developer/1577856011) |

## What reviewers say

### 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 |


### Project S Studio

[App page](https://appshunter.io/ios/app/project-s-studio/id6748689333)

**Features:** macOS Compatibility, Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is FLUID X free?

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

### Is Project S Studio free?

Project S Studio is free to download, with no in-app purchases.

### Do FLUID X or Project S Studio have ads?

Neither FLUID X nor Project S Studio shows ads.

### Which is updated more often, FLUID X or Project S Studio?

FLUID X ships an update every 9 months, and Project S Studio every 7 months. Most recently, FLUID X was updated on August 31, 2026 and Project S Studio on September 12, 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.*