WretchUp vs MESA Synth AUv3
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
MESA Synth AUv3
This music creation tool transforms visuals into sound by rendering shaders and images into wavetables. It offers a powerful synthesis engine, extensive sound-shaping capabilities, and a full effects rack, all controllable through light and visual input.
- Visual-to-audio wavetable synthesis
- Unison oscillator stack with sub-oscillator
- Zero-delay-feedback filter
- Vision panel for sound shaping with light
- 26 stackable visual modifiers as audio effects
- 8-stage stereo FX rack
- Sampler mode with auto pitch-tracking
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MESA is a wavetable synthesizer unlike any other — it turns visuals into sound. Drop in a shader or a .vkograph and MESA renders it offscreen, reads the light across the image, and turns that into a wavetable you play. The picture literally becomes the oscillator — and the same visual keeps living behind your keys, reacting to every note. No other synth works like this. Behind the magic is a complete, serious instrument: THE ENGINE • 64-frame wavetables, FFT mip-banked for clean, alias-free playback everywhere • Unison oscillator stack with detune, spread, and a sub-oscillator • Zero-delay-feedback filter — cutoff, resonance, drive, self-oscillating • Full ADSR envelope, portamento glide, and a dedicated pitch envelope SHAPE THE SOUND WITH LIGHT • Vision panel: choose the scanline, weight color channels, bend the brightness curve, sweep time — one shader, a thousand timbres • 33 color palettes that reshape the tone, not just the look • VFX chain: 26 stackable visual modifiers, each one also an audio effect A FULL STUDIO • 3-slot modulation matrix with 2 LFOs, velocity, and mod wheel • 8-stage stereo FX rack: tape, wow & flutter, chorus, delay, reverb, lo-fi, tape-stop • Sampler mode — load any audio, auto pitch-tracked across the keys • Arpeggiator, Ableton Link, and MIDI Learn on nearly every control BUILT FOR YOUR WORKFLOW • AUv3 plug-in AND standalone app — one purchase, iOS + macOS • iCloud sync — build a patch on your Mac, it's ready on your iPhone • Categorized preset browser with import/export and full patch recall
Screenshots
Verdict
The clearest difference is rating: MESA Synth AUv3 at 5.0 against WretchUp's 3.1. MESA Synth AUv3 also leads on review sentiment (100% vs 91%). WretchUp's advantage is price ($4.99 vs $8.99) and ratings volume (9 vs 1). On ads, in-app purchases, monetization model and device support 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
WretchUp costs $4.99 and MESA Synth AUv3 $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MESA Synth AUv3 holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: WretchUp has 9 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 91% of WretchUp's written reviews are positive against 100% of MESA Synth AUv3's.
WretchUp ships an update every 3 weeks, MESA Synth AUv3 every 2 months. The most recent releases landed on October 3, 2026 and October 13, 2026 respectively.
| Parameter | WretchUp | MESA Synth AUv3 |
|---|---|---|
| Price | $4.99 — better | $8.99 |
| Rating | 3.1 (9 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 90.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 9 — better | 1 |
| Update frequency | Every 3 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Mac |
| Requires iOS | 11.0 — better | 18.4 |
| Further details — not scored | ||
| Size | 15 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | MoMinstruments GbR | Juan Maguid |
Customer experience
WretchUp
MESA Synth AUv3
In-app purchases
WretchUp
No in-app purchases
MESA Synth AUv3
No in-app purchases









