Conform vs variStretch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Conform
An interactive music composition tool for iPad that explores how complexity can reduce direct control. It features an 8-channel sequencer where steps move to new positions when triggered, offering unique creative processes.
- 8-channel 16-step sequencer
- Dynamic step positioning
- Creative process exploration
- Interactive composition
- iPad exclusive
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Conform is an interactive composition for iPad, where complexity leads to less control. You are presented with a normal 8-channel 16-step sequencer. But once you select a step, triggering it will move it to a new position. Additional function buttons modify the step grid further, enabling new creative processes. ---------- Credits: Programming and sound design by Johan Halin. Clicks and pops by Otto Hassinen. (http://soundcloud.com/trisector) Created by Aero Deko. The source code for Conform is available on GitHub: https://github.com/superjohan/conform
variStretch
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.
- 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
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Concept: The app is a so-called time-stretch machine. The user can change the speed (0.5-2.0) of audio source in real-time using keyboard or slider at will. Usage: There are three play modes: 1) Tape (to change the both speed & pitch) 2) Phase Vocoder (to change the speed alone) 3) Thru (no processing) "Buffer Size" slider determines how long the data will be stored. "Buffer Clear" button will reset the buffer to be zero. System Requirements: AUv3 host
Screenshots
Verdict
The clearest difference is price: Conform at Free against variStretch's $5.99. Conform also leads on update cadence (monthly vs every 7 months) and ratings volume (5 vs 1). variStretch's advantage is rating (5.0 vs 4.2) and device support (3 vs 1). On ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Conform is free to download; variStretch costs $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 4.2. That said, the two scores are not equally well evidenced: Conform has 5 ratings behind it against 1, so its average is the more settled of the two.
Conform ships an update monthly, variStretch every 7 months. The most recent releases landed on September 23, 2026 and September 30, 2026 respectively.
| Parameter | Conform | variStretch |
|---|---|---|
| Price | Free — better | $5.99 |
| Rating | 4.2 (5 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 66.7% of reviews | — |
| Number of ratings | 5 — better | 1 |
| Update frequency | Monthly — better | Every 7 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPad | iPhone, iPad, iPod — better |
| Requires iOS | 6.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 2 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Aero Deko | Satoshi Kajii |
Customer experience
Conform
variStretch
In-app purchases
Conform
No in-app purchases
variStretch
No in-app purchases
