# FLUID X vs Domayn

The clearest difference is in-app purchases: Domayn at none against FLUID X's 6. Domayn also leads on update cadence (every 3 weeks vs every 9 months). FLUID X's advantage is device support (3 vs 1). On price, rating, review sentiment and ratings volume there is nothing between them.

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

On the App Store both sit at effectively the same score — 5.0 for FLUID X against 5.0 for Domayn. Both are backed by a comparable volume of ratings — 1 and 2 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

FLUID X ships an update every 9 months, Domayn every 3 weeks. The most recent releases landed on September 30, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | FLUID X | Domayn |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/fluid-x/id6502327233/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/domayn/id6759543129/reviews) |
| Number of ratings | 1 | **2** |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 3 weeks** |
| Monetization | Freemium | **Free** |
| Size | 13 MB | 81 MB |
| Requires iOS | **15.1** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Fluid X Limited](https://appshunter.io/developer/1745027064) | [Vibe Science Pte. Ltd.](https://appshunter.io/developer/1879410398) |

## 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 |


### Domayn

[App page](https://appshunter.io/ios/app/domayn/id6759543129)

This app controls a neuromodulation device using light and sound to guide your nervous system into desired states like wakefulness, focus, relaxation, or sleep. It offers various guided protocols and integrates with health trackers.

**Highlights:** Audio-visual neuromodulation control, Four guided protocols: Wake, Focus, Relax, Sleep, Session logging and streak tracking, Integration with Apple Health, Oura, WHOOP, Guest mode for shared device use, Welcome session for new users

**In-app purchases:** none


## Frequently asked questions

### Is FLUID X free?

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

### Is Domayn free?

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

### Which has better reviews, FLUID X or Domayn?

FLUID X and Domayn are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.

### Do FLUID X or Domayn have ads?

Neither FLUID X nor Domayn shows ads.

### Which is updated more often, FLUID X or Domayn?

FLUID X ships an update every 9 months, and Domayn every 3 weeks. Most recently, FLUID X was updated on September 30, 2026 and Domayn on October 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.*