Stereo Delay vs Quality Analyzer
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. ***
Quality Analyzer
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Quality Analyzer is a professional audio analysis tool for musicians, producers, and audio enthusiasts. FILE MODE (iOS & macOS) Analyze any audio file and get detailed insights: - Overall Quality Score (0-100) - LUFS Integrated, Short-Term & Momentary - True Peak Level detection - Warmth, Clarity, Dynamics & Spaciousness ratings - Spectral Balance visualization - MacBook & PA System compatibility scores - Mid/Side stereo analysis - Clipping detection Supports WAV, MP3, AIFF, FLAC and more. Simply drop a file (macOS) or tap to select (iOS). LIVE MODE (iOS only) Real-time sound level meter using your microphone: - Instant dB readings - Color-coded levels: Green (quiet) → Red (loud) - Visual spectrum display - Know when you're disturbing the neighbors! Perfect for: - Checking mix quality before release - Comparing masters - Measuring room noise levels - Audio quality control Clean, fast, no subscriptions. Just drop your audio and analyze.
Screenshots
Verdict
The clearest difference is chart position: Stereo Delay at #195 against Quality Analyzer's unranked. Stereo Delay also leads on iOS requirement (10.3 vs 17.6). On price, update cadence, 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
Stereo Delay costs $2.99 and Quality Analyzer $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Stereo Delay ships an update every 6 months, Quality Analyzer every 4 months. The most recent releases landed on September 11, 2026 and September 17, 2026 respectively.
| Parameter | Stereo Delay | Quality Analyzer |
|---|---|---|
| Price | $2.99 | $2.99 |
| Rating | 4.8 (5 ratings) — better | — |
| Positive reviews | 75.0% of reviews | — |
| Number of ratings | 5 — better | — |
| Update frequency | Every 6 months | Every 4 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Best chart rank | #195 — better | — |
| Devices | iPhone, iPad, iPod — better | iPhone, Mac |
| Requires iOS | 10.3 — better | 17.6 |
| Further details — not scored | ||
| Size | 2 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Blue Mangoo Consulting Company Limited | SORIN NAE |
In-app purchases
Stereo Delay
No in-app purchases
Quality Analyzer
No in-app purchases









