Delay Line vs MESA Synth AUv3
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Delay Line
This audio effect app offers a high-quality digital delay with smooth parameter control for musical echoes. It's designed to add depth and space to your sound without unwanted noise.
- High-quality digital delay
- Smooth parameter interpolation
- Feedback control
- Musical echoes
- Linear interpolation for delay time
- Comprehensive parameter smoothing
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A high-quality digital delay effect with smooth parameter interpolation and feedback control. This delay provides clean, musical echoes perfect for adding depth and space to your audio. The delay uses linear interpolation for smooth delay time changes and includes comprehensive parameter smoothing to eliminate zipper noise during real-time parameter adjustments.
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: Delay Line at 5.0 against MESA Synth AUv3's 3.0. Delay Line also leads on price ($1.99 vs $8.99). On ratings volume, 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
Delay Line costs $1.99 and MESA Synth AUv3 $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Delay Line holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 2 and 2 respectively.
| Parameter | Delay Line | MESA Synth AUv3 |
|---|---|---|
| Price | $1.99 — better | $8.99 |
| Rating | 5.0 (2 ratings) — better | 3.0 (2 ratings) |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | 2 | 2 |
| Update frequency | — | Every 2 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad, Mac — better |
| Requires iOS | 17.0 — better | 18.4 |
| Further details — not scored | ||
| Size | 7 MB | 10 MB |
| Age rating | 4+ | 4+ |
| Developer | Callback Audio, LLC | Juan Maguid |
Customer experience
Delay Line
MESA Synth AUv3
In-app purchases
Delay Line
No in-app purchases
MESA Synth AUv3
No in-app purchases









