# Reaction training. vs Fluid.

The clearest difference is in-app purchases: Fluid. at none against Reaction training.'s 6. Fluid. also leads on ads (none vs shown). Reaction training.'s advantage is update cadence (monthly vs every 5 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Reaction training. sells 6 in-app purchases, starting at $1.99 per month. Fluid. asks for nothing beyond the download.

Reaction training. ships an update monthly, Fluid. every 5 months. The most recent releases landed on October 13, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Reaction training. | Fluid. |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (572 ratings)](https://appshunter.io/ios/app/reaction-training/id6462426671/reviews)** | — |
| Number of ratings | **572** | — |
| Positive reviews | 91.3% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | Free with in-app purchases | — |
| Size | 49 MB | 12 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Olena Gotsulyak](https://appshunter.io/developer/1699979294) | [Michael Sun](https://appshunter.io/developer/1810156029) |

## What reviewers say

### Reaction training.

[App page](https://appshunter.io/ios/app/reaction-training/id6462426671)

Enhance your cognitive abilities, focus, and reflexes with a variety of engaging puzzles and games. Improve decision-making, logic, and memory skills through fun, educational exercises suitable for all ages. Challenge friends in a two-player mode for interactive learning and friendly competition.

**Highlights:** Over 55 puzzle and reflex challenges, Two-player competitive mode, Adjustable training intensity, Comprehensive progress statistics, Color theme customization, Schulte table, math, and memory exercises

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly subscription | $1.99 | per month |
| Annual subscription | $5.99 | per year |
| VIP pass | $3.99 | one-time |
| VIP pass | $6.99 | one-time |
| VIP pass | $9.99 | one-time |
| VIP pass | $19.99 | one-time |

**What reviewers like**

- 🚀 Excellent reaction training
- 💰 Reasonable one-time premium payment
- 👍 Simple and effective
- 🤩 Funny and engaging
- ⚡ Helps improve reaction speed

**What reviewers complain about**

- 🐛 Inconsistent and inaccurate results in some levels
- 🔍 Difficulty level too high for some exercises
- 📺 Excessive ads in free version
- 🔞 Inappropriate ads shown

**Reported bugs**

- Click limit exercise not functioning properly
- Delayed response time in registering clicks

**Requested features**

- Colorblind mode
- Adjustable difficulty levels
- More interactive and fun UI
- Improved ball catch hit detection


### Fluid.

[App page](https://appshunter.io/ios/app/fluid/id6744957976)

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

**In-app purchases:** none


## Frequently asked questions

### Is Reaction training. free?

Reaction training. is free to download, with in-app purchases available.

### Is Fluid. free?

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

### Do Reaction training. or Fluid. have ads?

Reaction training. shows ads; Fluid. does not.

### Which is updated more often, Reaction training. or Fluid.?

Reaction training. ships an update monthly, and Fluid. every 5 months. Most recently, Reaction training. was updated on October 13, 2026 and Fluid. on October 2, 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.*