# ReactionX vs Heed

ReactionX and Heed are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | ReactionX | Heed |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/reactionx/id1515855584/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | — |
| Monetization | Free | — |
| Size | 34 MB | 2 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [学斌 赵](https://appshunter.io/developer/1514555505) | [Lars de Graaff](https://appshunter.io/developer/6804994718) |

## What reviewers say

### ReactionX

[App page](https://appshunter.io/ios/app/reactionx/id1515855584)

Enhance your athletic performance with this app, designed to be used with specialized training lamps. Improve your speed and reaction times through professional sports training exercises.

**Highlights:** Professional sports training, Speed improvement, Reaction time enhancement, Compatible with training lamps hardware

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

**In-app purchases:** none


### Heed

[App page](https://appshunter.io/ios/app/heed-meditate-together/id6804994716)

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

**In-app purchases:** none


## Frequently asked questions

### Is ReactionX free?

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

### Is Heed free?

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

### Do ReactionX or Heed have ads?

Neither ReactionX nor Heed shows ads.

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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.*