Sparkle vs WretchUp
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Sparkle
Transform audio by transferring the temporal structure of one sound to another while preserving spectral properties. Create unique sound transformations with advanced spectral hybridization algorithms. Ideal for musicians and sound designers seeking innovative audio manipulation.
- Spectral hybridization
- Envelope preservation
- Phase-sync processing
- High-quality sound transformations
- Temporal structure transfer
- Spectral property preservation
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Sparkle is a tool for advanced spectral hybridizations made of several algorithms that operate on frequency domain. By means of envelope preservation and phase-sync processing it can creates high-quality sound transformations. The basic idea is to transfer the temporal structure of a sound (source) onto another sound (target) of which the spectral properties are preserved. Simply put, you can take a voice and make it sing a Beethoven’s symphony!
WretchUp
This app offers a unique audio manipulation experience, allowing users to create sonic mayhem with pitch-shifted delays, filters, and sampling. It's designed for live performance and studio use, enabling musicians and sound enthusiasts to generate wild noises and unique effects.
- Pitch-shifted delay with feedback and filter
- Live performance-oriented controls
- Gesture-based play
- Record vocals and instruments
- Sample and manipulate loops
- Inter-App-Audio and Audiobus support
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An effect instrument anyone can play - sonic anarchy in the palm of your hand. iOS Mars: "Barely controlled chaos“, "sonic extremes“, "well suited for live use“ Music App Blog: "if you like the occasional dose of sonic mayhem, then this is an app that will let you make it" WretchUp is the sonic instrument from the imagination of Mouse on Mars Instruments. Used by the duo in their live performances, it's a playable effect inspired by analog hardware. Sing into it, speak into it, plug in an instrument, sample sounds, and then make sonic mayhem. It's been tested in Mouse on Mars' live shows and used in studio albums. But now it's available to anyone - whether you're a musician wanting to create unique sounds or you just want to make some wild noises and frighten friends and enemies. // FEATURES - Pitch-shifted delay with feedback and filter - Unique controls, designed to be used in live performance and tested onstage - Play with gestures, even without looking closely at the screen - Record vocals or instruments from the built-in mic or another input - Sample loops and change their speed - Adjust the feedback loop, pitch, and filter for unique sounds - Make inputs by holding down your finger, or lock input for continuous sampling - Inter-App-Audio supported - Audiobus supported www.mouseonmars.com/mominstruments Features artwork by Rupert Smyth. Pure Data-based, open source patch created by Florian Grote and Peter Kirn with Mouse on Mars. App design by Oliver Greschke. Powered by free and open source software libpd. Note: like all mic-based effects, you need to enable microphone input. If you accidentally did not allow mic input, you can allow later via: Device settings, WretchUp, Data settings, Microphone, allow mic input.
Screenshots
Verdict
The clearest difference is rating: Sparkle at 5.0 against WretchUp's 3.1. Sparkle also leads on ratings volume (48 vs 9). WretchUp's advantage is price ($4.99 vs $9.99) and update cadence (every 3 weeks vs every 6 weeks). On review sentiment, ads, in-app purchases and monetization model 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
Sparkle costs $9.99 and WretchUp $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Sparkle holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: Sparkle has 48 ratings behind it against 9, so its average is the more settled of the two. Written reviews point the same way: 96% of Sparkle's written reviews are positive against 91% of WretchUp's.
Sparkle ships an update every 6 weeks, WretchUp every 3 weeks. The most recent releases landed on October 29, 2026 and October 24, 2026 respectively.
| Parameter | Sparkle | WretchUp |
|---|---|---|
| Price | $9.99 | $4.99 — better |
| Rating | 5.0 (48 ratings) — better | 3.1 (9 ratings) |
| Positive reviews | 95.8% of reviews — better | 90.9% of reviews |
| Number of ratings | 48 — better | 9 |
| Update frequency | Every 6 weeks | Every 3 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 37 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | apeSoft | MoMinstruments GbR |
Customer experience
Sparkle
WretchUp
In-app purchases
Sparkle
No in-app purchases
WretchUp
No in-app purchases









