GSDSP MagicBlur vs volumeCTRL
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
GSDSP MagicBlur
Transform audio into lush pads, frozen textures, or spectral motion with this multi-curve spectral blur and freeze effect. Shape different parts of the spectrum with independent blur times, and explore evolving drones and unique spectral transitions.
- Frequency-dependent spectral blur
- Multi-curve spectral freeze
- Morphing and frame selection
- Reverse morph direction
- Envelope and pitch shifting
- Modulation system
- AUv3 audio effect plugin
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Turn any sound into lush pads, frozen textures, or drifting spectral motion with this multi-curve spectral blur and freeze effect. Frequency-Dependent Blur MagicBlur is a multi-curve spectral blur and freeze processor designed for transforming audio into pads, overtone glissandi, reversed textures, and glitch-like movements. Apply separate blur times per frequency or frequency range, then mix, modulate, and spread them to explore anything from subtle, washed-out ambience to extreme spectral experimentation. How Spectral Blur Works Incoming audio is analyzed into fast-moving spectral frames, each representing the frequency content of a small slice of sound. Instead of playing every frame in sequence, MagicBlur lets you pick frames at defined intervals and morph smoothly toward the next one. The Blur Time sets how gradually frequencies transition — and because MagicBlur supports independent blur times per frequency, you can shape different parts of the spectrum with fine-grained control. Freeze, Reverse & Transform Disable morphing to create a spectral freeze, holding each frame until the next is selected. Reverse the morph direction, apply envelopes, or shift pitch to create evolving drones and unique spectral transitions. Combined with MagicBlur’s modulation system, these tools unlock a wide range of expressive and experimental sound design possibilities. MagicBlur is an AUv3 audio effect plugin compatible with Logic Pro, AUM, Cubasis, GarageBand and many more. A Desktop version is also available for Windows and macOS (VST3 / AU / AAX). More information here: https://gs-dsp.com/products
volumeCTRL
Gain precise control over your device's audio levels with this utility app. Adjust volume by percentage or dBFS, fine-tune with incremental steps, and temporarily dim or mute sound. Ideal for music, podcasts, and late-night media consumption.
- Precise volume adjustment by percentage or dBFS
- Keypad for exact value input
- Fine-tune volume with customizable step sizes
- Temporary dim and mute functions
- Seamless integration with device volume controls
- Universal app for iPhone, iPad, and iPod touch
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volumeCTRL is a simple utility that works alongside your iPhone/iPad’s built-in volume controls to give you precise control over its level. It is designed for anyone who needs or wants tighter, repeatable control over volume level. volumeCTRL lets you set the volume level using either Percent or dBFS (decibels from Full Scale). You can key in exact values with a handy on-screen keypad. Fine tune your setting using buttons which change the value in small steps. Dim or Mute the sound when you get interrupted temporarily. volumeCTRL is the perfect iPad Split View or Slide Over companion for listening to music, audiobooks, or podcasts. Use it with your favorite music app, such as Apple Music, Spotify, Qobuz, TIDAL Music, or Pandora. With volumeCTRL, you can get your late night listening level just right when you stream movies or TV shows while everything else is quiet. If you're picky about exactly how loud your device audio is, volumeCTRL is the right app for you. FEATURES - volumeCTRL lets you set your iPhone, iPad, or iPod touch volume precisely + New Favorite Volume options let you set preferred volumes for various listening cases - Selectable Units: Percent (%) or Decibels from Full Scale (dBFS) - Virtual Keypad allows you to key in exact values - Volume Up/Down Buttons let you change the volume in fine-grained 0.5 % or about 0.5 dB steps + New in Version 1.1 You can customize the step size - Dim and Mute Buttons let you temporarily lower the volume and easily get back to your previous level - Dim lowers the volume by a fixed amount (Customizable, Default: 18 dB) Super handy for quieting down loud commercials! - Mute silences the audio completely - volumeCTRL peacefully coexists with the device’s built-in volume controls — use either and the other follows seamlessly - Supports both Dark and Light Mode Appearances - Supports Hardware Keyboards connected to iPads - volumeCTRL is a Universal App - it works on iPad, iPhone, & iPod touch - User Guide embedded in App - no internet connection required to read it - auDSPr strives to design Apps for Everyone - Languages: All auDSPr audio apps support for 简体中文, Español, русский, 日本語, Français, Deutsch, Svenska, Latviešu - Accessibility Features - VoiceOver screen reader support assists visually impaired users APPLICATIONS - Setting impactful yet safe listening levels when using headphones or in-ear monitors - Setting repeatable reference volumes for studio control rooms or audiophile listening rooms - Setting precise levels for hearing aid intelligibility SYSTEM REQUIREMENTS - BUYER BEWARE: Some Bluetooth devices have coarse volume implementations (see picture above). The coarse hardware volume defeats volumeCTRL’s fine software volume setting and prevents performance from behaving optimally! - volumeCTRL is verified to work beautifully with Apple AirPods - Compatible with iOS 11.0 & up (iPhone 5S, iPhone SE (1st Generation), iPod touch (6th Generation) & up) - Compatible with iPadOS 11.0 & up (iPad (5th Generation), iPad Pro (1st Generation), iPad Air (1st Generation), iPad mini 2,& up)
Screenshots
Verdict
The clearest difference is review sentiment: GSDSP MagicBlur at 100% against volumeCTRL's 45%. GSDSP MagicBlur also leads on rating (4.9 vs 3.2) and update cadence (every 5 weeks vs every 9 months). volumeCTRL's advantage is price ($4.99 vs $29.99) and chart position (#156 vs unranked). On ratings volume, ads, in-app purchases 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
GSDSP MagicBlur costs $29.99 and volumeCTRL $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.
GSDSP MagicBlur holds the better App Store score, 4.9 against 3.2. Both are backed by a comparable volume of ratings — 9 and 9 respectively. Written reviews point the same way: 100% of GSDSP MagicBlur's written reviews are positive against 45% of volumeCTRL's.
GSDSP MagicBlur ships an update every 5 weeks, volumeCTRL every 9 months. The most recent releases landed on September 22, 2026 and September 13, 2026 respectively.
| Parameter | GSDSP MagicBlur | volumeCTRL |
|---|---|---|
| Price | $29.99 | $4.99 — better |
| Rating | 4.9 (9 ratings) — better | 3.2 (9 ratings) |
| Positive reviews | 100.0% of reviews — better | 45.5% of reviews |
| Number of ratings | 9 | 9 |
| Update frequency | Every 5 weeks — better | Every 9 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Best chart rank | — | #156 — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 11.0 — better |
| Further details — not scored | ||
| Size | 74 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Gustav Scholda | auDSPr |
Customer experience
GSDSP MagicBlur
volumeCTRL
In-app purchases
GSDSP MagicBlur
No in-app purchases
volumeCTRL
No in-app purchases









