Comparison

PhaseDelayArray vs Room Reverb

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Oscillating reverb sections
  • Modulation unit
  • Feedback delay up to 2 seconds
  • Multiple mix points
  • Mono-to-mono, mono-to-stereo, stereo-to-stereo support
Features
Read full description

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.

About

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.

Highlights
  • 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
Read full description

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

PhaseDelayArray4 screens
Room Reverb1 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Room Reverb sells 4 one-off in-app purchases. PhaseDelayArray asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

PhaseDelayArray ships an update every 2 months, Room Reverb every 5 months. Both last shipped on November 3, 2026.

Scorecard5 real differences · 5 level
PhaseDelayArray versus Room Reverb: the parameters behind the verdict, then further details
ParameterPhaseDelayArrayRoom Reverb
PriceFreeFree
Rating4.4 (47 ratings)4.9 (28 ratings) — better
Positive reviews73.3% of reviews90.0% of reviews — better
Number of ratings47 — better28
Update frequencyEvery 2 months — betterEvery 5 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFreeFree
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS11.0 — better13.0
Further details — not scored
Size9 MB8 MB
Age rating4+4+
DeveloperNeon SiliconChristian Voigt

Customer experience

PhaseDelayArray

All ratings45 ratings
Positive84.4%
Neutral6.7%
Negative8.9%
Written reviews15 reviews
Positive73.3%
Neutral6.7%
Negative20.0%

Room Reverb

All ratings24 ratings
Positive95.8%
Neutral4.2%
Negative0.0%
Written reviews10 reviews
Positive90.0%
Neutral0.0%
Negative10.0%

In-app purchases

None

PhaseDelayArray

No in-app purchases

4 purchases

Room Reverb

One-time4
  • Donation: Thank you!$4.99
  • Donation: Thank you!$9.99
  • Donation: Thank you!$19.99
Show 1 more
  • Donation: Thank you!$49.99

Questions

Is PhaseDelayArray free?
PhaseDelayArray is free to download, with no in-app purchases.
Is Room Reverb free?
Room Reverb is free to download, with in-app purchases available.
Which has better reviews, PhaseDelayArray or Room Reverb?
Room Reverb is rated higher. PhaseDelayArray averages 4.4 out of 5 from 47 ratings, while Room Reverb averages 4.9 from 28 ratings.
Do PhaseDelayArray or Room Reverb have ads?
Neither PhaseDelayArray nor Room Reverb shows ads.
Which is updated more often, PhaseDelayArray or Room Reverb?
PhaseDelayArray ships an update every 2 months, and Room Reverb every 5 months. Most recently, PhaseDelayArray was updated on November 3, 2026 and Room Reverb on November 3, 2026.