# AudioStretch vs String Theory

The clearest difference is rating: String Theory at 5.0 against AudioStretch's 4.4. String Theory also leads on price ($1.99 vs $9.99) and review sentiment (100% vs 89%). AudioStretch's advantage is ratings volume (230 vs 1) and chart position (#80 vs unranked). On ads, in-app purchases, monetization model and device support there is nothing between them.

AudioStretch costs $9.99 and String Theory $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

String Theory holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: AudioStretch has 230 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 89% of AudioStretch's written reviews are positive against 100% of String Theory's.

## The numbers

| Metric | AudioStretch | String Theory |
| --- | --- | --- |
| Price | $9.99 | **$1.99** |
| Rating | [4.4 (230 ratings)](https://appshunter.io/ios/app/audiostretch/id571863178/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/string-theory-guitar-practice/id6760247019/reviews)** |
| Number of ratings | **230** | 1 |
| Positive reviews | 88.5% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | — |
| Monetization | Paid | Paid |
| Best chart rank | **#80** | — |
| Size | 18 MB | 10 MB |
| Requires iOS | **12.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Cognosonic Pte Ltd](https://appshunter.io/developer/571863181) | [DANIEL NIKOLAS SZTURM](https://appshunter.io/developer/1883123507) |

## What reviewers say

### AudioStretch

[App page](https://appshunter.io/ios/app/audiostretch/id571863178)

**Currently charting:** #80 Top Paid · Music (US App Store)

This tool allows musicians to slow down, loop, and transpose music from audio or video files. It's designed to help users learn songs by ear, experiment with sounds, or simply explore their music library in new ways.

**Highlights:** Import audio or video files, Capture video with phone camera, Change speed without changing pitch, Transpose any music, Loop difficult sections, LiveScrub waveform listening, Keyboard/spectrum transcription aid

**Features:** Vision Pro support

**In-app purchases:** none


### String Theory

[App page](https://appshunter.io/ios/app/string-theory-guitar-practice/id6760247019)

This app helps guitarists explore scales and chords with an interactive fretboard. It allows users to compare scales, test custom tunings, and record riff ideas. The tool is designed for practicing improvisation, learning theory, and saving musical inspiration.

**Highlights:** Interactive guitar fretboard with scale mapping, Scale and Chord Finder tools, Custom tunings with octave control, Riff recording and vault organization, Left-handed mode, Scale comparison overlay

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AudioStretch free?

AudioStretch costs $9.99, with no in-app purchases.

### Is String Theory free?

String Theory costs $1.99, with no in-app purchases.

### Which has better reviews, AudioStretch or String Theory?

String Theory is rated higher. AudioStretch averages 4.4 out of 5 from 230 ratings, while String Theory averages 5.0 from 1 ratings.

### Do AudioStretch or String Theory have ads?

Neither AudioStretch nor String Theory shows ads.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*