# Frequency Detector Analyzer vs Spin AI

The clearest difference is update cadence: Spin AI at weekly against Frequency Detector Analyzer's every 2 months. Frequency Detector Analyzer's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.5). On price, ads and in-app purchases 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 and Spin AI sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Frequency Detector Analyzer ships an update every 2 months, Spin AI weekly. The most recent releases landed on September 17, 2026 and September 7, 2026 respectively.

## The numbers

| Metric | Frequency Detector Analyzer | Spin AI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (17 ratings)](https://appshunter.io/ios/app/frequency-detector-analyzer/id6752298079/reviews)** | — |
| Number of ratings | **17** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Weekly** |
| Monetization | Free with in-app purchases | — |
| Size | 65 MB | 24 MB |
| Requires iOS | **15.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [NEURASYNC](https://appshunter.io/developer/1639101560) | [Suneet Nangia](https://appshunter.io/developer/1842701187) |

## 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 |


### Spin AI

[App page](https://appshunter.io/ios/app/spin-ai/id6753998404)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Spin AI | $2.99 | one-time |


## Frequently asked questions

### Is Frequency Detector Analyzer free?

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

### Is Spin AI free?

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

### Do Frequency Detector Analyzer or Spin AI have ads?

Neither Frequency Detector Analyzer nor Spin AI shows ads.

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

Frequency Detector Analyzer ships an update every 2 months, and Spin AI weekly. Most recently, Frequency Detector Analyzer was updated on September 17, 2026 and Spin AI on September 7, 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.*