# Crystal Synth XT vs Audio Tools

The clearest difference is price: Audio Tools at Free against Crystal Synth XT's $4.99. Crystal Synth XT's advantage is in-app purchases (none vs 2) and device support (3 vs 1). On ads there is nothing between them.

Audio Tools is free to download; Crystal Synth XT costs $4.99 up front. Audio Tools sells 2 in-app purchases, starting at $3.99 per 7 days. Crystal Synth XT asks for nothing beyond the download.

## The numbers

| Metric | Crystal Synth XT | Audio Tools |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[4.9 (22 ratings)](https://appshunter.io/ios/app/crystal-synth-xt/id408288370/reviews)** | — |
| Number of ratings | **22** | — |
| Positive reviews | 78.4% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Paid | — |
| Size | 36 MB | 13 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Green Oak Software](https://appshunter.io/developer/355342717) | [Emine Saridogan](https://appshunter.io/developer/6791217143) |

## What reviewers say

### Crystal Synth XT

[App page](https://appshunter.io/ios/app/crystal-synth-xt/id408288370)

Create lush, evolving soundscapes with a powerful semi-modular synthesizer for mobile devices. Explore subtractive and FM synthesis, extensive modulation, and built-in effects. Share sounds with the desktop version and connect MIDI keyboards for a full hardware synth experience.

**Highlights:** Semi-modular synthesis engine, Subtractive and FM synthesis, Extensive modulation control (>90 parameters), Multi-stage envelopes with graphical editors, Tempo-synced envelopes, LFOs, and delays, Built-in effects (chorus, flanger, echo), MIDI keyboard input and virtual MIDI support

**Features:** macOS Compatibility

**In-app purchases:** none

**What reviewers like**

- 🎶 Fantastic sound quality
- 💡 Innovative breed function
- 🎛️ Deep sound design capabilities
- 🎹 Versatile synth
- ✨ Unique and creative sounds

**What reviewers complain about**

- 🐛 Occasional crashes
- ⚠️ Preset system issues (folders, access)
- 🐌 Outdated interface
- 🔌 Lacks AUv3 support (frequently requested)
- 🔊 Crackling/popping sounds

**Reported bugs**

- App not working, splash screen disappears
- Screen in background
- Envelope points not moving
- Breed fan not working properly
- Crashing on launch

**Requested features**

- AUv3 support
- Update to an AU3 standard
- Newer interface
- Fix breed fan access to all presets
- Fix preset system variations between devices


### Audio Tools

[App page](https://appshunter.io/ios/app/audio-tools-reco/id6791217141)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $3.99 | per 7 days |
| Yearly | $17.99 | per year |


## Frequently asked questions

### Is Crystal Synth XT free?

Crystal Synth XT costs $4.99, with no in-app purchases.

### Is Audio Tools free?

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

### Do Crystal Synth XT or Audio Tools have ads?

Neither Crystal Synth XT nor Audio Tools shows ads.

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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.*