# Frequency Detector Analyzer vs Belty

The clearest difference is review sentiment: Belty at 100% against Frequency Detector Analyzer's 0%. Belty also leads on rating (5.0 vs 4.4) and in-app purchases (none vs 2). Frequency Detector Analyzer's advantage is ratings volume (23 vs 5) and device support (3 vs 1). On price and ads there is nothing between them.

Both are free to download. Frequency Detector Analyzer sells 2 in-app purchases, starting at $8.99 per 7 days. Belty asks for nothing beyond the download.

Belty holds the better App Store score, 5.0 against 4.4. Both are backed by a comparable volume of ratings — 23 and 5 respectively. Written reviews point the same way: 0% of Frequency Detector Analyzer's written reviews are positive against 100% of Belty's.

Frequency Detector Analyzer ships an update every 2 months, Belty every 11 days. The most recent releases landed on October 28, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Frequency Detector Analyzer | Belty |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (23 ratings)](https://appshunter.io/ios/app/frequency-detector-analyzer/id6752298079/reviews) | **[5.0 (5 ratings)](https://appshunter.io/ios/app/belty-belt-tuner/id6789591665/reviews)** |
| Number of ratings | **23** | 5 |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 11 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 65 MB | 1 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [NEURASYNC](https://appshunter.io/developer/1639101560) | [Coby Lai](https://appshunter.io/developer/6789591667) |

## What reviewers say

### Frequency Detector Analyzer

[App page](https://appshunter.io/ios/app/frequency-detector-analyzer/id6752298079)

This application transforms your device into a precise sound analysis tool. It offers real-time frequency detection, visualization, and data logging for musicians, engineers, and curious individuals. Gain clarity and accuracy in understanding the soundscape around you.

**Highlights:** Live frequency tuner, Spectrogram visualization, Automatic logging and CSV export, Customizable logging interval, Elegant and modern design, Reliable performance

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Frequency Detector Weekly Sub | $8.99 | per 7 days |
| Frequency Detector Lifetime | $29.99 | one-time |


### Belty

[App page](https://appshunter.io/ios/app/belty-belt-tuner/id6789591665)

This app analyzes the frequency of a plucked timing belt to help you tune it accurately. It provides real-time feedback, historical data, and includes calculators for tension and belt length.

**Highlights:** Real-time frequency analysis, Live tuning indicator, Measurement history, Tension calculator, Belt length calculator, On-device processing

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Frequency Detector Analyzer free?

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

### Is Belty free?

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

### Which has better reviews, Frequency Detector Analyzer or Belty?

Belty is rated higher. Frequency Detector Analyzer averages 4.4 out of 5 from 23 ratings, while Belty averages 5.0 from 5 ratings.

### Do Frequency Detector Analyzer or Belty have ads?

Neither Frequency Detector Analyzer nor Belty shows ads.

### Which is updated more often, Frequency Detector Analyzer or Belty?

Frequency Detector Analyzer ships an update every 2 months, and Belty every 11 days. Most recently, Frequency Detector Analyzer was updated on October 28, 2026 and Belty on October 24, 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.*