# AppStash vs Spectrum Analyzer+ Audio FFT

The clearest difference is rating: AppStash at 3.3 against Spectrum Analyzer+ Audio FFT's 2.6. AppStash also leads on ads (none vs shown) and device support (3 vs 1). Spectrum Analyzer+ Audio FFT's advantage is in-app purchases (none vs 1) and update cadence (weekly vs every 12 months). On price and ratings volume there is nothing between them.

Both are free to download. AppStash sells 1 one-off in-app purchase. Spectrum Analyzer+ Audio FFT asks for nothing beyond the download.

AppStash holds the better App Store score, 3.3 against 2.6. Both are backed by a comparable volume of ratings — 7 and 5 respectively.

AppStash ships an update every 12 months, Spectrum Analyzer+ Audio FFT weekly. The most recent releases landed on November 2, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | AppStash | Spectrum Analyzer+ Audio FFT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.3 (7 ratings)](https://appshunter.io/ios/app/appstash-tuning-fork/id1435003007/reviews)** | [2.6 (5 ratings)](https://appshunter.io/ios/app/spectrum-analyzer-plus-audio-fft/id6760830858/reviews) |
| Number of ratings | **7** | 5 |
| Positive reviews | 40.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 12 months | **Weekly** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 30 MB | 69 MB |
| Requires iOS | **9.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 17+ |
| Developer | [Chun Wong](https://appshunter.io/developer/1534425422) | [Kyu-Hee Jang](https://appshunter.io/developer/1587578867) |

## What reviewers say

### AppStash

[App page](https://appshunter.io/ios/app/appstash-tuning-fork/id1435003007)

This utility app provides a straightforward tuning fork experience. Easily adjust pitch and octaves with an intuitive interface. Designed to be simple and effective for musicians.

**Highlights:** Adjustable pitch, Octave control, Intuitive interface, Simple design

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Pro | $0.99 | one-time |


### Spectrum Analyzer+ Audio FFT

[App page](https://appshunter.io/ios/app/spectrum-analyzer-plus-audio-fft/id6760830858)

This utility transforms your device into a real-time audio frequency analyzer. It visualizes sound frequencies from 20 Hz to 20 kHz using the microphone, displaying amplitude and peak frequencies. It's designed for musicians, audio engineers, and sound enthusiasts.

**Highlights:** Real-time FFT audio spectrum visualization, Frequency range 20 Hz to 20 kHz, Peak frequency detection, Average dB level per band, Adjustable dB range, Dark theme

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

**In-app purchases:** none


## Frequently asked questions

### Is AppStash free?

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

### Is Spectrum Analyzer+ Audio FFT free?

Spectrum Analyzer+ Audio FFT is free to download, with no in-app purchases.

### Which has better reviews, AppStash or Spectrum Analyzer+ Audio FFT?

AppStash is rated higher. AppStash averages 3.3 out of 5 from 7 ratings, while Spectrum Analyzer+ Audio FFT averages 2.6 from 5 ratings.

### Do AppStash or Spectrum Analyzer+ Audio FFT have ads?

Spectrum Analyzer+ Audio FFT shows ads; AppStash does not.

### Which is updated more often, AppStash or Spectrum Analyzer+ Audio FFT?

AppStash ships an update every 12 months, and Spectrum Analyzer+ Audio FFT weekly. Most recently, AppStash was updated on November 2, 2026 and Spectrum Analyzer+ Audio FFT on October 31, 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.*