UltraTap Delay vs AU3FX
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
UltraTap Delay
Create rhythmic delays, glitchy reverbs, and evolving soundscapes with up to 64 taps. This app offers unique controls for shaping sound, including LFOs, envelopes, and a "Slurm" control for smearing and modulation. Explore over 150 inspiring presets and innovative performance features.
- Up to 64 taps for complex delays
- Spread knob for rhythmic spacing
- LFOs and envelopes for stutter effects
- Slurm control for unique modulation
- Stereo image control
- Over 150 presets
- Ribbon and Hotswitch controls
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UltraTap is a unique multi-tap effect capable of rhythmic delays, glitchy reverbs, huge pad-like volume swells and extraordinary modulation. It’s the perfect tool for creating drum fills, vocal choruses, swelling guitar chords and other evolving effects — everything from reversed reverbs to a massed church choir singing a Gregorian chant in Notre-Dame Cathedral. Features: - Use up to 64 taps to create simple repeats or morph delays into choruses and reverbs. - Speed up or slow down the rhythmic spacing between taps using the Spread knob. - Use the onboard LFOs and envelopes to chop the sound source into stuttered rhythms. - Use the innovative "Slurm" control to smear taps together or modulate them to create truly unique reverbs. - Control the stereo image of taps to alternate between hard-panned and mono. - Over 150 presets designed to inspire; including artist presets by Chris Carter, Colin Newman, Sasha and many more. - Innovative Ribbon and Hotswitch allow for changing any combination of parameters simultaneously. - Use Mix Lock to scroll through presets while keeping the wet-dry mix constant. - Available as an Audio Units AUv3 plug-in and Standalone App.
AU3FX
This audio effect plugin offers a highly customizable stereo delay, capable of producing a wide spectrum of sounds from clean digital echoes to distorted dub effects and flangers. It features a 32-bit DSP engine with extensive tweakable parameters, tape simulation, and filters for unique sonic textures.
- Highly tweakable stereo delay
- 32-bit DSP engine
- Tape simulation (noise and warble)
- Filters in delay loop
- Stereo, detune, and ping-pong modes
- Dual LFO for modulation
- Bundled presets and user presets
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A highly tweakable stereo delay AudioUnit effect, suitable for everything from clean digital delays to filthy dub echoes, flangers and broken cassette tapes. This app is part of the AU3FX series, a collection of simple and powerful audio unit effect plugins. • High quality 32-bit DSP engine. • A multitude of parameters to tweak to get a wide range of sounds. • Tape simulation (noise and warble). • Filters in the delay loop for typical dub sound. • Stereo delay, stereo detune, ping-pong delay. • Sinewave and random dual LFO for flangers and other modulations. • Comes with several bundled presets. • Use multiple instances at the same time. • Save/load session state in host. • External access and control of all parameters from host. • User presets shared across hosts (on iOS 13 and later).
Screenshots
Verdict
The clearest difference is price: AU3FX at $5.99 against UltraTap Delay's $14.99. AU3FX also leads on rating (5.0 vs 4.8) and review sentiment (100% vs 88%). UltraTap Delay's advantage is update cadence (every 2 months vs every 6 months). 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
UltraTap Delay costs $14.99 and AU3FX $5.99 up front. Neither carries in-app purchases, so what you see is what you pay.
AU3FX holds the better App Store score, 5.0 against 4.8. Both are backed by a comparable volume of ratings — 20 and 20 respectively. Written reviews point the same way: 88% of UltraTap Delay's written reviews are positive against 100% of AU3FX's.
UltraTap Delay ships an update every 2 months, AU3FX every 6 months. The most recent releases landed on October 14, 2026 and October 13, 2026 respectively.
| Parameter | UltraTap Delay | AU3FX |
|---|---|---|
| Price | $14.99 | $5.99 — better |
| Rating | 4.8 (20 ratings) | 5.0 (20 ratings) — better |
| Positive reviews | 87.5% of reviews | 100.0% of reviews — better |
| Number of ratings | 20 | 20 |
| Update frequency | Every 2 months — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 12.0 |
| Further details — not scored | ||
| Size | 23 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Eventide | Kymatica AB |
Customer experience
UltraTap Delay
AU3FX
In-app purchases
UltraTap Delay
No in-app purchases
AU3FX
No in-app purchases









