# Frequency Analyzer vs HemiSync

The clearest difference is review sentiment: HemiSync at 100% against Frequency Analyzer's 10%. Frequency Analyzer's advantage is rating (4.5 vs 4.2) and update cadence (every 8 days vs every 5 weeks). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Frequency Analyzer sells 11 in-app purchases, starting at $2.99 per 7 days and HemiSync sells 1 in-app purchase, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

Frequency Analyzer holds the better App Store score, 4.5 against 4.2. That said, the two scores are not equally well evidenced: Frequency Analyzer has 169 ratings behind it against 9, so its average is the more settled of the two. Written reviews complicate that: 10% of Frequency Analyzer's written reviews are positive against 100% of HemiSync's, so the app with the better star average is not the one people write more warmly about.

Frequency Analyzer ships an update every 8 days, HemiSync every 5 weeks. The most recent releases landed on October 4, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | Frequency Analyzer | HemiSync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (169 ratings)](https://appshunter.io/ios/app/frequency-analyzer/id6468837339/reviews)** | [4.2 (9 ratings)](https://appshunter.io/ios/app/hemisync/id6751762821/reviews) |
| Number of ratings | **169** | 9 |
| Positive reviews | 10.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 8 days** | Every 5 weeks |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 35 MB | 61 MB |
| Requires iOS | **17.2** | 18.4 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Manfred Kuegel](https://appshunter.io/developer/1520736594) | [EngineZero](https://appshunter.io/developer/1573141529) |

## What reviewers say

### Frequency Analyzer

[App page](https://appshunter.io/ios/app/frequency-analyzer/id6468837339)

Transform your device into a professional audio analysis tool with advanced FFT analysis, SPL monitoring, and detailed visualizations. Record, analyze, and export audio data with precision calibration and multiple weighting filters.

**Highlights:** Real-time FFT analysis, Calibrated SPL measurements, 32-bit float audio recording, Synchronized video recording, Spectrogram and octave band analysis, Export WAV, CSV, images, and videos

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

**In-app purchases (11)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Frequency Analyzer Pro Weekly | $2.99 | per 7 days |
| Frequency Analyzer Pro Monthly | $3.99 | per month |
| Frequency Analyzer Pro Monthly | $3.99 | per month |
| Frequency Analyzer Pro Monthly | $4.99 | per month |
| Frequency Analyzer Pro Monthly | $4.99 | per month |
| Frequency Analyzer Pro Monthly | $4.99 | per month |
| Frequency Analyzer Pro Annual | $29.99 | per year |
| Frequency Analyzer Pro Annual | $44.99 | per year |
| Frequency Analyzer Pro Annual | $44.99 | per year |
| Frequency Analyzer Pro Annual | $44.99 | per year |
| Pro access for lifetime | $89.99 | one-time |


### 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 Frequency Analyzer free?

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

### Is HemiSync free?

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

### Which has better reviews, Frequency Analyzer or HemiSync?

Frequency Analyzer is rated higher. Frequency Analyzer averages 4.5 out of 5 from 169 ratings, while HemiSync averages 4.2 from 9 ratings.

### Do Frequency Analyzer or HemiSync have ads?

Neither Frequency Analyzer nor HemiSync shows ads.

### Which is updated more often, Frequency Analyzer or HemiSync?

Frequency Analyzer ships an update every 8 days, and HemiSync every 5 weeks. Most recently, Frequency Analyzer was updated on October 4, 2026 and HemiSync on September 29, 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.*