Envau vs AuDelay
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Envau
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Envau turns location and gestures into sound. Place notes, songs, or audio samples anywhere on a map, then activate them by moving through space or swiping across the screen. Create ambient soundscapes that respond to your movement, compose spatial melodies, or use it as a MIDI controller for compatible music apps and hardware. Perfect for musical walking meditations, soundwalks, location-responsive compositions, or recording journeys as finished tracks. Built-In Synthesis & Effects Use the app's internal synthesizers, import or record audio samples, or use both simultaneously. Shape your sound with built-in effects including phaser, chorus, delay, and reverb. Touch Mode Switch to touch mode and play your composition by swiping across the screen. Transform the map into a dynamic instrument where gesture and sound unite. MIDI Controller Connect Envau to external synthesizers, drum machines, and music apps, all while using internal sounds and samples simultaneously. Your spatial compositions become MIDI data, opening up endless creative possibilities with your existing setup. Create & Share Toggle, combine, and share your work in real-time. All active samples and presets are automatically bundled, ensuring your projects load exactly as intended with no broken links or missing assets. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula
AuDelay
This audio effect plugin offers a unique delay with a cosmic ambient soundscape. It utilizes the Golden Ratio in its design for versatile and unconventional sound manipulation, featuring three stereo delay lines with variable modulation and lo-fi texture.
- Golden Ratio DSP
- Three stereo delay lines
- Variable modulation
- Lo-fi texture
- Max 16-second delay time
- Soft switch/trails mode
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AuDelay Golden Ratio Cosmic Delay (AUv3) AuDelay is an audio effect plugin that can run standalone, or in any AU compatible host application such as Logic Pro or GarageBand. Overview AuDelay is a delay effect that looks quite simple on the outside, but there's a lot going on inside. The Golden Ratio (*) is used extensively in the DSP code for AuDelay which results in a versatile delay effect that can also sound very unconventional. At its core, AuDelay is a trio of stereo delay lines with variable modulation, panning and lo-fi texture. Shorter delay times can produce an echo effect reminiscent of vintage "oil can" units, but with a maximum base delay time of 16 seconds, "cosmic" ambient soundscape delay effects is where AuDelay really shines. AuDelay takes its name from the chemical element symbol "Au" for gold, and it just so happens to be an "AU" (Audio Unit) too! Please note that by design, AuDelay is not well-suited to tempo-sync / rhythmic type delays, so if that's more your thing, please check out PolyDelay as an alternative. AuDelay is also similarly named, but not to be confused with AulDelay either, which is a much more basic analog-flavoured delay. (*) The Golden Ratio, approximately equal to 1.618, is a special number that has fascinated many scholars going back to Ancient Greek times. It can be found in geometry, architecture, art and even some patterns in nature. Controls Active - Toggles the effect On or Off. This behaves as a "soft switch" or in "trails mode", allowing any delay repeats to ring out when you toggle to the Off state. Time - Sets the base, or longest delay time. There are three delay lines, each with different pre-delay and base delay times. With Density set to minimum, you have just one line active, so you will typically hear a shorter initial (pre-delay) repeat, then a longer repeat equal to the Time value - very similar to an "oil can delay" with just one head. Density - This activates the 2nd and 3rd delay lines progressively, so you will hear the output of these delays faded into the wet mix gradually as you increase the Density control. However, when the control gets close to maximum, something else interesting starts to happen... Density 0% - Only one delay line is active. Density 0-50% - A second delay line is mixed in gradually, with the two being equal level with the Density control at 50%. Density 50-75% - A third delay line is mixed in gradually, with all three being equal level with the Density control at 75%. Density 75-100% - In this range, the output of the lines are fed back into each other, creating an almost reverb-like wash, especially at high Regen settings. Regen - Sets the regeneration or feedback for the delay lines. Note that because of the way the Density processing works, AuDelay does not do infinite or "freeze" type effects, but rest assured, the decay time can still be very long when Regen is set to maximum. Lo-Fi - Applies high and lowpass filtering to the delay repeats along with some gritty drive to emulate a vintage analog delay. Mod - Applies modulation to the delay. Each delay line is modulated independently and in stereo for a lush chorusing type effect. As you increase Mod, the underlying LFOs start to drift and warble in an unpredictable way. Pan - Applies a panning effect to the output of each delay line. The pan rate varies with the delay time and the underlying LFOs will also start to drift as you increase the control. Mix - Increases the level of the delayed signal. Note that AuDelay does not go 100% "wet", so Mix does not alter the level of your dry signal. Out - Can be used to adjust the overall output (wet + dry) from AuDelay. For more info and support please visit: www.waverley-instruments.com/robjackson
Screenshots
Verdict
The clearest difference is price: Envau at Free against AuDelay's $1.99. Envau also leads on update cadence (every 10 days vs every 10 months). AuDelay's advantage is in-app purchases (none vs 2) and device support (4 vs 2). On ads 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
Envau is free to download; AuDelay costs $1.99 up front. Envau sells 2 in-app purchases, starting at $3.99 per month. AuDelay asks for nothing beyond the download.
Envau ships an update every 10 days, AuDelay every 10 months. The most recent releases landed on October 11, 2026 and October 24, 2026 respectively.
| Parameter | Envau | AuDelay |
|---|---|---|
| Price | Free — better | $1.99 |
| Rating | — | 5.0 (4 ratings) — better |
| Positive reviews | — | 100.0% of reviews |
| Number of ratings | — | 4 — better |
| Update frequency | Every 10 days — better | Every 10 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | — | Paid |
| Devices | iPhone, iPad | iPhone, iPad, iPod, Mac — better |
| Requires iOS | 18.7 | 13.0 — better |
| Further details — not scored | ||
| Size | 27 MB | 13 MB |
| Age rating | 4+ | 4+ |
| Developer | Tim Sandgren | Rob Jackson |
In-app purchases
Envau
- All Access$3.991 Month
- All Access7 Days trial$14.991 Year
AuDelay
No in-app purchases









