Stereo Delay vs Soren
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stereo Delay
This audio unit plugin creates natural-sounding stereo delays with unique panning that expands stereo width without sounding repetitive. It features filters and a mixing matrix for dynamic echo placement, ideal for adding depth to music.
- Unique stereo panning matrix
- Natural, moving stereo echo
- Low-cut and hi-cut filters
- Feedback control
- LFO controlled pan
- Requires host app
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Blue Mangoo Stereo Delay is designed to be the go-to app a for simple, musically tasteful delay effect. The most unique feature is the way it handles panning of delayed echoes in the stereo field. Most stereo delays set different delay times for the left and right channels, resulting in the famous ping-pong effect. The problem with the ping-pong stereo delay sound is that it's too extreme, and our ears quickly tire of hearing the same pattern of left-then-right delay repeated hundreds of times. This plugin does it differently. Instead of setting delay taps at different times panned hard left or right, it always keeps the same delay time setting for both the left and right channels, but it has a unique mixing matrix controlling the feedback between the left and right channels so that each time the echo repeats, it appears in a new place in the stereo field. This is different from a simple panning delay, because older echoes and newer ones can simultaneously appear at different positions in the stereo field. The result is a very natural stereo echo that expands the stereo width of the sound but doesn't sound repetitive or electronic. It's constantly moving and changing. The wet signal output has low-cut and hi-cut filters. The hi-cut filter tones down the harshness of the delay and makes it sound like natural echoes. The low-cut is especially useful for applying delay without making things sound muddy. At extreme settings the low cut can achieve a lo-fi telephone like delay sound. The signal flow diagram is as follows: Filters => LFO controlled pan => Stereo Delay Lines => Mixing matrix => Feedback to Delay Lines The dry signal (not shown above) bypasses the entire effect. The key difference between this and other delays is the mixing matrix, which is similar to the ones used in feedback delay network reverb effects to mix between multi-channel delays without changing the volume of the sound. It is the matrix (not the LFO) that creates the illusion that the signal has moved to a different location in the stereo field each time it repeats through the delays. *** THIS IS AN AUDIO UNIT ONLY EFFECT. IT REQUIRES A HOST APP SUCH AS AUM, Audiobus, GarageBand, OR Cubasis. IT DOES NOT RUN AS A STANDALONE APP. ***
Soren
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Finish your track. Hear the difference. Keep your sound on your device. Soren brings focused automated mastering to iPhone and iPad. Import a mix or video, choose the sound you want, compare the result, and export your finished file. TRY YOUR OWN SOUND FREE Master previews of up to 30 seconds with the same mastering quality and sound choices as the full version. Choose the section you want to hear. One permanent in-app purchase unlocks full-length listening and all audio and video exports. No subscription or per-track fees. FEWER DECISIONS. YOUR SOUND. Start with the defaults, or adjust genre, character and loudness, from Soft to Loud. Pick one of 27 Smart References or import your own reference track. Hear the actual original and mastered levels, or turn on Match loudness for a fair comparison at matched listening volume. MUSIC AND VIDEO Finish a song, a performance video or a spoken recording. Video imports offer video export with finished sound and the original picture. Import videos from Files or Photos. For spoken content, choose the Speech preset. Save finished videos directly to Photos or share them to Files and other apps. EXPORT WITH CONTROL Unlock WAV at 24 or 16 bits, MP3 at 320 kbps, and MOV video with finished audio. Use Soren's -0.8 dBTP peak ceiling or choose -1.0 dBTP. Video exports use a 24-bit PCM soundtrack, so files can be larger than the original compressed video. PRIVATE PROCESSING Audio processing happens on your device. No audio uploads, Soren account or cloud processing service. Apple handles in-app purchases. Supports files up to six minutes. Audio: mono/stereo WAV, AIFF, M4A and MP3 at 32-96 kHz. Video: supported MOV/MP4 files with a single mono/stereo soundtrack. Keep Soren open while it processes or exports. The mobile unlock is separate from desktop Soren. Requires iOS or iPadOS 17 or later.
Screenshots
Verdict
The clearest difference is price: Soren at Free against Stereo Delay's $2.99. Stereo Delay's advantage is iOS requirement (10.3 vs 17.0). On ads, in-app purchases and device support 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
Soren is free to download; Stereo Delay costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Stereo Delay | Soren |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 4.8 (5 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 6 months | — |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 10.3 — better | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | Blue Mangoo Consulting Company Limited | Rast Media GmbH |
In-app purchases
Stereo Delay
No in-app purchases
Soren
No in-app purchases









