PhaseDelayArray vs Room Reverb
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PhaseDelayArray
This audio effect application provides a unique combination of oscillating reverb, modulation, and feedback delay. It can be used to create a wide range of subtle to extreme soundscapes within compatible music production software.
- Oscillating reverb sections
- Modulation unit
- Feedback delay up to 2 seconds
- Multiple mix points
- Mono-to-mono, mono-to-stereo, stereo-to-stereo support
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PhaseDelayArray is an Audio Unit, or AU, for iOS. This application is simply a container for the Audio Unit and also serves as the documentation for the AU. PhaseDelayArray must be used in some sort of Audio Unit host or DAW application. PhaseDelayArray is a bit of a strange effect. O.K, so, what is it? PhaseDelayArray has three effect units chained together in an interesting configuration, and one of these units is just a little bit twisted. The first unit consists of a sequential array of vibrating (oscillating) reverberation sections. The oscillations can be tiny or huge. The reverb depth can be tiny or huge. The overall effect can be subtle or HUGE. It can create a wide range of sounds. The second section is a modulation unit. It takes the output of the PhaseDelays and whips it around, or up-and-down or back-and-forth. The final section is a feedback unit with the possibility of a lot of delay (up to 2 seconds). The mix section allows you to tap into all this strangeness in four different places. PhaseDelayArray can be used in mono-to-mono, mono-to-stereo, or stereo-to-stereo settings. Several of the features work best with a stereo output.
Room Reverb
This audio plugin adds natural-sounding reverberation to your recordings, bringing them to life. It offers a variety of presets and controls to customize the sound, making dry recordings feel more realistic. It requires a host application that supports AUv3 audio plugins.
- Mono/stereo to stereo algorithmic reverb
- Numerous presets from small to large rooms
- Undo/redo and A/B comparison
- Parameter lock for preset changes
- Separate level controls for reverb parts
- Stereo width control
- Resizeable user interface
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Room Reverb is an audio plugin that lets you add reverberation to your recordings. Nowadays, people often record in very "dry" places, which is good for editing the recording, but leads to an unnatural sound because the human ear is so used to reverberation. Room Reverb brings your recording back to life by adding the desired reverberation. Key features - Mono/stereo to stereo algorithmic reverb - Many presets from small rooms to very large rooms - Undo/redo and A/B comparison - Parameter lock to retain individual parameters when changing presets - Separate level controls for all reverb parts - Stereo width control - Resizeable user interface - Built-in explanation of all plugin parameters - Easy to set up and use Please note Room Reverb is an AUv3 audio plugin that requires a host application like GarageBand. Simply open your host application that supports AUv3 audio plugins and add Room Reverb as an effect.
Screenshots
Verdict
The clearest difference is in-app purchases: PhaseDelayArray at none against Room Reverb's 4. PhaseDelayArray also leads on update cadence (every 2 months vs every 5 months) and iOS requirement (11.0 vs 13.0). Room Reverb's advantage is rating (4.9 vs 4.4) and review sentiment (90% vs 73%). On price, ratings volume, ads 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
Both are free to download. Room Reverb sells 4 one-off in-app purchases. PhaseDelayArray asks for nothing beyond the download.
Room Reverb holds the better App Store score, 4.9 against 4.4. Both are backed by a comparable volume of ratings — 47 and 28 respectively. Written reviews point the same way: 73% of PhaseDelayArray's written reviews are positive against 90% of Room Reverb's.
PhaseDelayArray ships an update every 2 months, Room Reverb every 5 months. Both last shipped on November 3, 2026.
| Parameter | PhaseDelayArray | Room Reverb |
|---|---|---|
| Price | Free | Free |
| Rating | 4.4 (47 ratings) | 4.9 (28 ratings) — better |
| Positive reviews | 73.3% of reviews | 90.0% of reviews — better |
| Number of ratings | 47 — better | 28 |
| Update frequency | Every 2 months — better | Every 5 months |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 11.0 — better | 13.0 |
| Further details — not scored | ||
| Size | 9 MB | 8 MB |
| Age rating | 4+ | 4+ |
| Developer | Neon Silicon | Christian Voigt |
Customer experience
PhaseDelayArray
Room Reverb
In-app purchases
PhaseDelayArray
No in-app purchases
Room Reverb
- Donation: Thank you!$4.99
- Donation: Thank you!$9.99
- Donation: Thank you!$19.99
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- Donation: Thank you!$49.99

