# Vibration Detect II vs HemiSync

The clearest difference is price: HemiSync at Free against Vibration Detect II's $9.99. HemiSync also leads on update cadence (every 5 weeks vs every 28 months). Vibration Detect II's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On ads there is nothing between them.

HemiSync is free to download; Vibration Detect II costs $9.99 up front. HemiSync sells 1 in-app purchase, starting at $0.99 per month. Vibration Detect II asks for nothing beyond the download.

Vibration Detect II ships an update every 28 months, HemiSync every 5 weeks. The most recent releases landed on September 14, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Vibration Detect II | HemiSync |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | — | **[4.2 (9 ratings)](https://appshunter.io/ios/app/hemisync/id6751762821/reviews)** |
| Number of ratings | — | **9** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 28 months | **Every 5 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 11 MB | 61 MB |
| Requires iOS | **11.0** | 18.4 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Anders Falck](https://appshunter.io/developer/941097539) | [EngineZero](https://appshunter.io/developer/1573141529) |

## What reviewers say

### Vibration Detect II

[App page](https://appshunter.io/ios/app/vibration-detect-ii/id1520170942)

**In-app purchases:** none


### HemiSync

[App page](https://appshunter.io/ios/app/hemisync/id6751762821)

This app generates binaural beats and isochronic tones to aid in meditation and relaxation. Explore various sound frequencies and pre-set combinations for personal wellness routines, with customizable timers and controls.

**Highlights:** Binaural beat and isochronic tone generation, Customizable frequency ranges (Delta, Theta, Alpha, Beta, Gamma), Pre-configured audio presets, Session timer functionality, Solfeggio frequency options

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium | $0.99 | per month |


## Frequently asked questions

### Is Vibration Detect II free?

Vibration Detect II costs $9.99, with no in-app purchases.

### Is HemiSync free?

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

### Do Vibration Detect II or HemiSync have ads?

Neither Vibration Detect II nor HemiSync shows ads.

### Which is updated more often, Vibration Detect II or HemiSync?

Vibration Detect II ships an update every 28 months, and HemiSync every 5 weeks. Most recently, Vibration Detect II was updated on September 14, 2026 and HemiSync on September 29, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*