# UPISketch vs QuaDelay

The clearest difference is review sentiment: UPISketch at 100% against QuaDelay's 0%. UPISketch also leads on price (Free vs $1.99) and iOS requirement (9.3 vs 12.0). QuaDelay's advantage is rating (4.7 vs 4.5) and ratings volume (6 vs 2). On update cadence, ads, in-app purchases and device support there is nothing between them.

UPISketch is free to download; QuaDelay costs $1.99 up front. Neither carries in-app purchases, so what you see is what you pay.

QuaDelay holds the better App Store score, 4.7 against 4.5. Both are backed by a comparable volume of ratings — 2 and 6 respectively. Written reviews complicate that: 100% of UPISketch's written reviews are positive against 0% of QuaDelay's, so the app with the better star average is not the one people write more warmly about.

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on September 21, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | UPISketch | QuaDelay |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | [4.5 (2 ratings)](https://appshunter.io/ios/app/upisketch/id1389444597/reviews) | **[4.7 (6 ratings)](https://appshunter.io/ios/app/quadelay/id6744034081/reviews)** |
| Number of ratings | 2 | **6** |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 days | Every 3 days |
| Monetization | **Free** | Paid |
| Size | 56 MB | 12 MB |
| Requires iOS | **9.3** | 12.0 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Rodolphe Bourotte](https://appshunter.io/developer/1333253948) | [Rob Jackson](https://appshunter.io/developer/1072346998) |

## What reviewers say

### UPISketch

[App page](https://appshunter.io/ios/app/upisketch/id1389444597)

Create music by drawing sound gestures and melodic contours. This intuitive tool allows users to design pitches at specific time points without needing musical theory knowledge. It's a simple way to compose unique soundscapes.

**Highlights:** Sketch sound gestures, Define melodic contours, Draw pitches at specific times, Intuitive interface, No solfege knowledge required

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

**In-app purchases:** none


### QuaDelay

[App page](https://appshunter.io/ios/app/quadelay/id6744034081)

This audio effect plugin creates unique stereo delay soundscapes using four independent delay lines. It offers advanced control over delay times, regeneration, modulation, and filtering for ambient and experimental audio textures. It can be used standalone or within compatible host applications.

**Highlights:** Four independent stereo delay lines, Adjustable delay times and ratios, Variable regeneration (feedback), Stereo modulation effect, Low-pass filter for repeats, Integrated reverb effect, Standalone and AUv3 compatible

**In-app purchases:** none


## Frequently asked questions

### Is UPISketch free?

UPISketch is free to download, with no in-app purchases.

### Is QuaDelay free?

QuaDelay costs $1.99, with no in-app purchases.

### Which has better reviews, UPISketch or QuaDelay?

QuaDelay is rated higher. UPISketch averages 4.5 out of 5 from 2 ratings, while QuaDelay averages 4.7 from 6 ratings.

### Do UPISketch or QuaDelay have ads?

Neither UPISketch nor QuaDelay shows ads.

### Which is updated more often, UPISketch or QuaDelay?

UPISketch ships an update every 3 days, and QuaDelay every 3 days. Most recently, UPISketch was updated on September 21, 2026 and QuaDelay 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.*