# Arctic ProSynth vs variStretch

The clearest difference is rating: variStretch at 5.0 against Arctic ProSynth's 3.3. variStretch also leads on price ($5.99 vs $9.99) and device support (3 vs 1). Arctic ProSynth's advantage is ratings volume (8 vs 1) and update cadence (every 4 months vs every 7 months). On ads, in-app purchases and monetization model there is nothing between them.

Arctic ProSynth costs $9.99 and variStretch $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.

variStretch holds the better App Store score, 5.0 against 3.3. That said, the two scores are not equally well evidenced: Arctic ProSynth has 8 ratings behind it against 1, so its average is the more settled of the two.

Arctic ProSynth ships an update every 4 months, variStretch every 7 months. The most recent releases landed on October 7, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Arctic ProSynth | variStretch |
| --- | --- | --- |
| Price | $9.99 | **$5.99** |
| Rating | [3.3 (8 ratings)](https://appshunter.io/ios/app/arctic-prosynth/id676870971/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/varistretch/id6744925479/reviews)** |
| Number of ratings | **8** | 1 |
| Positive reviews | 71.4% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 7 months |
| Monetization | Paid | Paid |
| Size | 47 MB | 15 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [One Red Dog Media Pty Ltd](https://appshunter.io/developer/398933972) | [Satoshi Kajii](https://appshunter.io/developer/1777441634) |

## What reviewers say

### Arctic ProSynth

[App page](https://appshunter.io/ios/app/arctic-prosynth/id676870971)

Create bold and tough electronic music with a modern subtractive synthesizer. Explore rich sound design with powerful oscillators, dual filters, and versatile effects. Record and share your creations easily.

**Highlights:** HyperOscillators for fat sounds, Dual multi-mode filters, Master effects with adjustable order, Integrated Vocoder, 16x4 gated step sequencer, Live audio and MIDI recording, Preset and bank sharing

**In-app purchases:** none


### variStretch

[App page](https://appshunter.io/ios/app/varistretch/id6744925479)

This app allows real-time audio speed manipulation without altering pitch. It offers three distinct playback modes and adjustable buffer settings for precise control over sound processing.

**Highlights:** Real-time speed adjustment (0.5-2.0x), Tape mode (speed & pitch change), Phase Vocoder mode (speed only), Adjustable buffer size, Buffer clear function, AUv3 host compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Arctic ProSynth free?

Arctic ProSynth costs $9.99, with no in-app purchases.

### Is variStretch free?

variStretch costs $5.99, with no in-app purchases.

### Which has better reviews, Arctic ProSynth or variStretch?

variStretch is rated higher. Arctic ProSynth averages 3.3 out of 5 from 8 ratings, while variStretch averages 5.0 from 1 ratings.

### Do Arctic ProSynth or variStretch have ads?

Neither Arctic ProSynth nor variStretch shows ads.

### Which is updated more often, Arctic ProSynth or variStretch?

Arctic ProSynth ships an update every 4 months, and variStretch every 7 months. Most recently, Arctic ProSynth was updated on October 7, 2026 and variStretch on September 30, 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.*