AudioReverb vs Discord4
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AudioReverb
Apply studio-quality algorithmic reverberation to your music and audio. This app simulates acoustic spaces and classical reverb algorithms for a realistic sound. Enhance your music library or use it as a professional plugin with compatible hosts.
- Algorithmic reverberation
- Early reflection modeling
- 118 factory presets
- 4-band equalizer
- AUv3 compatible
- Audiobus 3 compatible
- Inter-app audio compatible
Read full descriptionHide full description
Studio quality reverb for AUv3 compatible hosts / Audiobus / Inter-app audio and songs from your iTunes music library. AudioReverb is an algorithmic reverberation app which combines the flexibility of vintage algorithmic reverbs with the sonic quality of convolution based reverbs. The creation of high quality reverb needs a realistic simulation of the important early reflections together with a smooth and colorless reverberation tail. The early reflections are the most important clue for the human ear to get a feeling about the dimension and character of a room. Most algorithmic reverbs offer a number of different algorithms to simulate different natural rooms like chamber, halls or artificial ones like plates. AudioReverb uses impulse responses from real acoustic spaces and classical reverb algorithms to emulate their acoustical properties. The resulting reverberation sets new standards in clarity and sense of space ! Use AudioReverb for enhancing your listening experience with your favourite iTunes songs. Use AudioReverb as professional reverb plugin to improve the quality of any Audiobus or Inter-app audio compatible App. • Smooth reverb tail generation. • Early Reflection Modelling. • 118 factory presets. • 4 Band Equalizer. • AudioUnit for AUv3 compatible hosts. • Inter-app audio compatible effect. • Audiobus 3 compatible as effect. • Reverberate any song in your iTunes library. • Low latency live usage with mic and headphones. • Audio recorder. • Audio file export via pasteboard / open in / e-mail
Discord4
This stereo pitch-shifting delay app offers three distinct algorithms for vintage, clean, or experimental granular effects. It features tempo-synced delays, a reverb in the feedback loop, and flexible LFO modulation for extensive sound design. Control pitch shifts with MIDI and fine-tune effects with buffer size adjustments.
- Three pitch-shifting algorithms (Vintage, Clean, Granular)
- Tempo-synced and free-running delays
- Reverb in feedback loop for shimmer effects
- Flexible LFO modulation
- MIDI note control for pitch shifting
- True stereo operation with panorama controls
- Resizable vector-based GUI
Read full descriptionHide full description
Discord4 is the Audio Damage stereo pitch shifter, in its fourth generation. Each channel has its own pitch shifter, delay, bandpass filter, and feedback, and every repeat runs back through the shifter, so the same effect can double a vocal, stack fifths into an arpeggio, or send echoes spiraling up or down. Three engines set the character. Vintage is modeled on the H910 and H949 and has their grainy, glitchy character. Modern is cleaner and more transparent. Both have a buffer control from 32 to 2048 samples that changes the character of the shift. Granular cuts the signal into grains from 15 to 100 ms long, with an interval control and a Chaos knob that scrambles them, for anything from soft clouds to complete destruction. Detune the two sides a few cents in opposite directions over a short delay for a wide doubler. Set one side a fifth up, sync the delays, and raise the feedback so each repeat climbs another step. Keep the reverb in the loop for shimmer, then hit Freeze to hold a pad under the part. Turn on MIDI Shift to play harmonies from a keyboard, or ride the pitch wheel for bends. • Three pitch-shift engines: Vintage, Modern, and Granular • True stereo: each side has its own shifter, delay, filter, feedback, and pan, or link them so the right follows the left • Up to three octaves up or down, set by the cent or locked to semitones • Delays up to two seconds per side, free-running or tempo-synced, with feedback and cross-feedback • A bandpass filter in each feedback path, set from an XY pad • A stereo reverb inside the loop, with Freeze to hold the tail indefinitely • Saturation in the loop to keep runaway feedback in check • Two flexible LFOs for pitch, delay time, and filter frequency, shaped by Wave, Skew, and Warp, free from 0.01 to 14 Hz or synced to tempo • MIDI Shift: play the shift amount from a keyboard, with pitch bend, in hosts that send MIDI to effects • A preset browser with folders and favorites, and 50 factory presets from everyday doubling to the thoroughly strange Discord4 runs as an AUv3 plugin inside any compatible iOS host, including AUM, Cubasis, Drambo, and apeMatrix, and as a standalone app with background audio for live input. It is also available for macOS, Windows, and Linux as a desktop plugin. Requires iOS 16 or later. An AUv3 host app is recommended. No subscriptions. No accounts. No nonsense. Buy it once, own it forever.
Screenshots
Verdict
The clearest difference is rating: Discord4 at 4.7 against AudioReverb's 3.7. AudioReverb's advantage is price ($1.99 vs $8.99) and update cadence (every 4 months vs every 14 months). On review sentiment, ratings volume, ads and in-app purchases 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
AudioReverb costs $1.99 and Discord4 $8.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Discord4 holds the better App Store score, 4.7 against 3.7. Both are backed by a comparable volume of ratings — 23 and 29 respectively. Written reviews complicate that: 65% of AudioReverb's written reviews are positive against 61% of Discord4's, so the app with the better star average is not the one people write more warmly about.
AudioReverb ships an update every 4 months, Discord4 every 14 months. Both last shipped on October 29, 2026.
| Parameter | AudioReverb | Discord4 |
|---|---|---|
| Price | $1.99 — better | $8.99 |
| Rating | 3.7 (23 ratings) | 4.7 (29 ratings) — better |
| Positive reviews | 64.9% of reviews — better | 61.1% of reviews |
| Number of ratings | 23 | 29 — better |
| Update frequency | Every 4 months — better | Every 14 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 12.0 — better | 16.0 |
| Further details — not scored | ||
| Size | 14 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | Harry Gohs | Audio Damage, Inc. |
Customer experience
AudioReverb
Discord4
In-app purchases
AudioReverb
No in-app purchases
Discord4
No in-app purchases









