# AippieTax vs Frequency Detector Analyzer

The clearest difference is in-app purchases: AippieTax at none against Frequency Detector Analyzer's 2. On price, update cadence, ads and device support 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. AippieTax asks for nothing beyond the download.

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | AippieTax | Frequency Detector Analyzer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.4 (22 ratings)](https://appshunter.io/ios/app/frequency-detector-analyzer/id6752298079/reviews)** |
| Number of ratings | — | **22** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Monetization | — | Free with in-app purchases |
| Size | 45 MB | 65 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [COSTACCARECONNECT SL.](https://appshunter.io/developer/1820847229) | [NEURASYNC](https://appshunter.io/developer/1639101560) |

## What reviewers say

### AippieTax

[App page](https://appshunter.io/ios/app/aippietax/id6747329025)

**Features:** macOS Compatibility

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is AippieTax free?

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

### Is Frequency Detector Analyzer free?

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

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

Neither AippieTax nor Frequency Detector Analyzer shows ads.

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

AippieTax ships an update every 2 months, and Frequency Detector Analyzer every 2 months. Most recently, AippieTax was updated on October 13, 2026 and Frequency Detector Analyzer 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.*