# Biofeedback App vs Hypnotic Ball

The clearest difference is price: Biofeedback App at Free against Hypnotic Ball's $0.99. Biofeedback App also leads on update cadence (every 2 weeks vs every 9 months) and iOS requirement (9.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

Biofeedback App is free to download; Hypnotic Ball costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Biofeedback App ships an update every 2 weeks, Hypnotic Ball every 9 months. The most recent releases landed on October 2, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Biofeedback App | Hypnotic Ball |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | **[1.7 (3 ratings)](https://appshunter.io/ios/app/biofeedback-app/id1257124910/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 9 months |
| Monetization | Free | — |
| Size | 37 MB | 3 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mobile Associates, LLC](https://appshunter.io/developer/959592099) | [瑶 肖](https://appshunter.io/developer/1036033056) |

## What reviewers say

### Biofeedback App

[App page](https://appshunter.io/ios/app/biofeedback-app/id1257124910)

This app explores the combination of biofeedback and mental rehearsal to improve athletic performance. It incorporates conscious breathing, heart rate, and body temperature tracking, alongside mental rehearsal and lucid dreaming techniques. The goal is to enhance training and competition outcomes over time.

**Highlights:** Biofeedback tracking, Mental rehearsal techniques, Lucid dreaming integration, Conscious breathing exercises, Heart rate monitoring, Body temperature tracking

**In-app purchases:** none


### Hypnotic Ball

[App page](https://appshunter.io/ios/app/hypnotic-ball/id1560602847)

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

**In-app purchases:** none


## Frequently asked questions

### Is Biofeedback App free?

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

### Is Hypnotic Ball free?

Hypnotic Ball costs $0.99, with no in-app purchases.

### Do Biofeedback App or Hypnotic Ball have ads?

Neither Biofeedback App nor Hypnotic Ball shows ads.

### Which is updated more often, Biofeedback App or Hypnotic Ball?

Biofeedback App ships an update every 2 weeks, and Hypnotic Ball every 9 months. Most recently, Biofeedback App was updated on October 2, 2026 and Hypnotic Ball on October 1, 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.*