GRDelay vs TETSUO
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GRDelay
This audio effect plugin creates unique sound textures by generating up to 16 stereo 'grains' from delayed input audio. It offers randomization of grain shape, delay time, and pitch-shifting for experimental sound design.
- Granular synthesis-based delay
- Up to 16 stereo grains
- Randomized grain shape and delay time
- Pitch-shifting and cascading grains
- Standalone and AUv3 compatible
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GRDelay - Granular Random Delay Plugin (AUv3) GRDelay is an audio effect plugin that can run standalone, or in any AU compatible host application such as Logic Pro or GarageBand. Overview - What's a Granular Random Delay? GRDelay is a randomised delay effect that uses a similar approach to granular synthesis to generate sound. In GRDelay, up to 16 "grains" of stereo sound are created in realtime from delayed copies of the input audio, with control over the grain shape and delay time. There are also options to pitch-shift grains up an octave, and cascade the output from one grain into another. Shape, delay time and pitch-shifting can all be randomised to create some really unusual effects and textures. While GRDelay can produce sounds similar to existing pitch-shifted delays and even shimmer effects, the design is totally original, and to the best of my knowledge, quite sonically unique. I think GRDelay is really one of those effects you need to hear to believe, so please do check out the reviews and demos online. Please note, because there's a "whole lot of random going on" in GRDelay, it's not a good choice if you want a delay that can do tempo / clock-sync'd rhythmic delays. Perhaps take a look at PolyDelay which offers tempo sync to host and musical note length delay times. For more info and support please visit: www.waverley-instruments.com/robjackson
TETSUO
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TETSUO is a chaotic percussion machine. No samples, no library. One voice built out of a pitched body with noise dragged through it, a resonant filter that saturates the harder you lean on it, a bitcrusher, and a waveshaper that runs from a bit of weight to total structural failure. The sequencer is sixteen unseen slots and STEPS knob decides how many of them fire, adding and taking away hits one at a time in a fixed order, so you can strip a pattern to the bone and build it back and the same beats come home. The SKIP control works against you on purpose, stealing hits at random while it plays, so it never quite settles. MUTATE modulates the pitch at random, setting fire to voices on every turn. You do not program TETSUO so much as negotiate with it. The strip along the top is how you attempt to hold onto anything. Sixty four steps, four turns of pattern, carved into as many as eight sections. Select a section. Find a sound. Hit RECORD, and that section keeps every knob position. Change it, record the next, then hit PLAY and it walks left to right dropping each snapshot in as it reaches it, looping. Drag the dividers to give a section longer or cut it short. It keeps settings, not audio, so the engine is playing live the entire way through. Sections save with your presets and your session. AUv3 and standalone.
Screenshots
Verdict
The clearest difference is price: GRDelay at $1.99 against TETSUO's $9.99. GRDelay also leads on iOS requirement (12.0 vs 15.6). On ads, in-app purchases 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
GRDelay costs $1.99 and TETSUO $9.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | GRDelay | TETSUO |
|---|---|---|
| Price | $1.99 — better | $9.99 |
| Rating | 5.0 (3 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 3 — better | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod, Mac — better | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 12 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Rob Jackson | Anthony Moran |
In-app purchases
GRDelay
No in-app purchases
TETSUO
No in-app purchases









