Comparison

GSDSP MagicBlur vs CVOsc

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

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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

About

CVOsc

Features
Read full description

Connect an Expert Sleepers ES-9, ES-8, or any class-compliant DC-coupled interface to your iOS Device, and visualize up to sixteen simultaneous channels of Control Voltage and audio — no laptop, no patch cables to a computer. See your patch • Up to 16 simultaneous channels in a paged, responsive grid • Three display modes: All (every channel), Selected (just the channels you tag), and Overlay (selected traces superimposed on a single canvas for phase and correlation work) • Per-channel range, offset, and time base, in volts for CV and normalized units for audio • Auto-trigger on zero crossing for rock-steady waveforms • Auto-fit to waveform when you just want the trace centered • Independent CV vs Audio mode per channel, with renameable identities ("VCO 1", "LFO Slow", etc.) Listen in • Built-in live monitor: route any input channel to any physical output of the interface • Monitor multiple channels simultaneously, each to its own output • Output assignments persist across sessions • Hot-plug aware — disconnect and reconnect, and CVOsc rebinds automatically Pro features (auto-renewing annual subscriptions) • Tuner — pitch detection that works on both CV pitch signals and audio. See note name and cents offset live in the pane. • Record & Playback — capture every selected channel to its own WAV file, then play recordings back through the interface. CV recordings are routed only to DC-coupled outputs; the app warns you if you try otherwise. Live monitoring and playback share the same USB pipeline, so you can play recordings while monitoring live channels at the same time. • Saved Channel Settings — every channel comes back exactly the way you left it on the next launch. • Presets — save and recall whole-rig configurations: channel names, signal types, all scale settings, monitor routings — under a single name. Each subscription is independent. Restore Purchases in Settings re-entitles anything you've previously bought on this Google account. Cancel anytime; cancellations take effect at the end of the current billing period. Hardware requirements CVOsc requires a class-compliant USB audio interface and a USB-C OTG cable. To visualize CV signals (not just audio), the interface must be DC-coupled. A powered USB hub is recommended for tablets that don't supply enough bus power. Supported DC Coupled USB Sound Cards Expert Sleepers - ES-9 (14 ch) - ES-8 (8 ch) - ES-3 (8 ch) - ES-40 (8 ch) Solid State Logic - SSL 2 MKII (2 ch) - SSL 2+ MKII (4 ch) - SSL 12 (4 ch) - SSL 18 (10 ch) - SSL ALPHA 8 (8 ch) MOTU - M2 / M4 / M6 (2 / 4 / 6 ch) - UltraLite-mk5 (10 ch), UltraLite AVB (8 ch) - 624 (6 ch), 8A (8 ch), 8M (8 ch), 10pre (8 ch), 16A (16 ch), 24Ao (24 ch) - 1248 (8 ch), 828 (8 ch), 828es (8 ch), 848 (12 ch) RME - Fireface UCX II (6 ch) Universal Audio - Apollo Twin / Twin MkII / Twin X / Twin USB / Twin X USB (4 ch) - Apollo x4 (6 ch), x6 (8 ch), x8 (10 ch), x8p (10 ch), x16 (18 ch) Native Instruments - Komplete Audio 6 MK2 (4 ch) Non-DC Coupled interfaces still work for audio I/O; they just won't pass the validator's DC-coupling check for CV playback. EULA: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy: https://cvosc.com/privacy.html

Screenshots

GSDSP MagicBlur3 screens
CVOsc1 screens

Verdict

The call

The clearest difference is price: CVOsc at Free against GSDSP MagicBlur's $29.99. GSDSP MagicBlur's advantage is in-app purchases (none vs 4) and iOS requirement (12.0 vs 26.4). On update cadence, ads 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

CostPrice · In-app purchases · Ads · Monetization

CVOsc is free to download; GSDSP MagicBlur costs $29.99 up front. CVOsc sells 4 in-app purchases, starting at $0.99 per year. GSDSP MagicBlur asks for nothing beyond the download.

UpkeepUpdate frequency

GSDSP MagicBlur ships an update every 5 weeks, CVOsc every 6 weeks. The most recent releases landed on September 22, 2026 and October 6, 2026 respectively.

Scorecard3 real differences · 7 level
GSDSP MagicBlur versus CVOsc: the parameters behind the verdict, then further details
ParameterGSDSP MagicBlurCVOsc
Price$29.99Free — better
Rating4.9 (9 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings9 — better—
Update frequencyEvery 5 weeks — betterEvery 6 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS12.0 — better26.4
Further details — not scored
Size74 MB6 MB
Age rating4+4+
DeveloperGustav ScholdaAleph Void LLC

In-app purchases

None

GSDSP MagicBlur

No in-app purchases

4 purchases

CVOsc

Subscriptions4
  • CVOsc Annual Tuner$0.991 Year
  • CVOsc Annual Recording$0.991 Year
  • CVOsc Preset Annual$0.991 Year
Show 1 more
  • CVOsc Annual Convert To Gate$0.991 Year

Questions

Is GSDSP MagicBlur free?
GSDSP MagicBlur costs $29.99, with no in-app purchases.
Is CVOsc free?
CVOsc is free to download, with in-app purchases available.
Do GSDSP MagicBlur or CVOsc have ads?
Neither GSDSP MagicBlur nor CVOsc shows ads.
Which is updated more often, GSDSP MagicBlur or CVOsc?
GSDSP MagicBlur ships an update every 5 weeks, and CVOsc every 6 weeks. Most recently, GSDSP MagicBlur was updated on September 22, 2026 and CVOsc on October 6, 2026.

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