Comparison

Music Spectrograph vs VisualSound

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

Head to head
About

Music Spectrograph

Visually reverse engineer sound and music in real-time with a live MIDI piano roll displaying pitch and frequency. Slow down or stop audio to analyze musical patterns, aiding in music transcription and learning.

Highlights
  • Real-time MIDI piano roll
  • Pitch and frequency visualization
  • Slow down and stop audio
  • Music transcription aid
  • Adjustable playback speed
  • Color-coded pitch graph
Features
Read full description

Music Spectrograph allows you to visually reverse engineer sound and music, in real-time. See a live MIDI piano roll showing pitch and frequency. When playing music files, you can slow down, and even stop sound in time. Music Spectrograph is being using in college music programs to aid in learning music transcription. The Hotpaw Music Spectrograph presents a high-resolution scrolling spectrogram as you listen, so that you can see these patterns in sound and music, as well as how sound corresponds to notes on a piano keyboard. This piano alignment makes it far easier to spot which frequencies in sounds correspond to which musical notes. Features include: - 12th-octave MIDI-pitch-centered spectrograph (also called a sonogram) - Usable with live audio, tunes from your iOS device's music library, or a file downloaded via a URL (web address) - Records up to a 4 minute spectrograph history you can stop, scroll back and review - Slow Down music files by up to 8X, or speed music up by 3X to skip sections faster - Stop music in time, and still hear the music frequencies present via re-synthesis (scroll back a little in time to bring up the ReSynth switch). - Play tunes in mono, left or right channel only, or with center-panned vocals reduced - Color the pitch graph to see if notes are in-tune or out-of-tune - Color the spectrograph for loudness, or graph in black-and-white or with Pastel colors - Mid-pitch filtering to remove some of the higher overtones Use the Input? button to select a tune from your library (DRM protected iTunes files not supported). Use the Gear button to select among several viewing modes. There's a volume control to manually set the sensitivity threshold. Stop playing or recording to scroll back and review or resynthesize sound. Touch the keyboard during resynthesis to isolate one note. For many musical sounds, this app will show you many overtones and harmonics, not just the fundamental pitch of notes. Some musical experience is required to tell musical notes from their overtones and harmonic frequencies.

About

VisualSound

This app is a modular instrument that synthesizes sound and visuals using a unified patching system. Explore over 140 modules for audio, control, and graphics, and even generate custom effects with AI. It's designed for performance and integrates with your existing studio setup.

Highlights
  • Unified sound and visual patching
  • Over 140 modules (sound, control, visuals, code)
  • AI-powered module creation
  • GPU-native visuals
  • Performance-oriented features
  • AUv3 integration and hosting
  • Cross-device functionality (iPad, Mac, iPhone)
Read full description

---- Launch offer — introductory pricing for a limited time. The price goes up after launch week: now is the moment to patch in --- VisualSound is a modular instrument where sound and image are made of the same material. One canvas, one cable language: patch an oscillator into a filter, then patch the same signal into light, liquid and geometry. Nothing is a visualizer bolted on top — the picture IS the patch. ONE CANVAS, FIVE REALMS More than 140 modules across sound, control, visuals, geometry and code. Drag a cable and anything can play anything: an envelope strikes a fluid simulation, a sequencer bends a shader, a camera feed becomes an oscillator. INSTRUMENTS WITH OPINIONS • VYPER — a snarling acid bassline machine with slides, accents and pattern morphing. • KINETIC — a step-sequenced drum machine built on lovingly recorded classic analog kits. • KEYS — a playable polyphonic keyboard panel; on Mac, your QWERTY becomes the keybed. • SEQ, LFO, ENV, granular engines, a looper, a tape-stop, reels you can scrub like vinyl. LIGHT AS SIGNAL GPU-native visuals: shaders, feedback, bloom, fluid dynamics, sculpted 3D geometry. Point the camera at the world and use it as a texture. OCULUS tracks your hands and face so you can play parameters by moving. WRITE YOUR OWN MODULES — OR JUST ASK GRAIN is VisualSound's per-sample DSP language: code your own audio and visual processors right on the canvas. Tap the wand, describe the effect in plain English — "a dark tape echo that wobbles" — and an AI running entirely ON YOUR DEVICE writes the code, compiles it, and tells you honestly when something isn't possible. No cloud, no account. It works in airplane mode. (The AI brain is a free one-time download.) BUILT TO PERFORM Eight scenes with beat-synced morphing, motion loops, MIDI learn on everything, a timeline that can bend the tempo itself. Record your performance — audio and video — straight out of the app. PLAYS WELL WITH YOUR STUDIO Runs as an AUv3 instrument inside your DAW, and HOSTS your AUv3 synths and effects inside the canvas. MIDI in and out. Background audio. Files in, stems out. YOUR IPHONE IS THE REMOTE Install VisualSound on iPhone and it becomes VS Remote: a wireless control surface for the instrument running on your iPad or Mac, over your local network. No setup, no cloud. ONE PURCHASE, EVERY SCREEN Buy once and VisualSound is yours on iPad, Mac and iPhone. Same patches, same engine — the Mac gets QWERTY keys and plugin hosting depth, the iPad gets ten fingers on glass. PRIVATE BY DESIGN No accounts, no analytics, no ads. Your patches, recordings and prompts never leave your device. Privacy policy: https://visualsound.app/privacy/ Open the app and you land on Welcome — a living patch, already playing, wired for you to pull apart. That's the whole philosophy: understanding by unscrewing. Sound and light, patched together.

Screenshots

Music Spectrograph2 screens
VisualSound2 screens

Verdict

The call

The clearest difference is price: Music Spectrograph at $9.99 against VisualSound's $19.99. Music Spectrograph also leads on ratings volume (4 vs 1) and iOS requirement (12.4 vs 18.0). VisualSound's advantage is rating (5.0 vs 2.5) and update cadence (every 2 days vs every 6 weeks). On ads, in-app purchases, monetization model 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

Music Spectrograph costs $9.99 and VisualSound $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

VisualSound holds the better App Store score, 5.0 against 2.5. Both are backed by a comparable volume of ratings — 4 and 1 respectively.

UpkeepUpdate frequency

Music Spectrograph ships an update every 6 weeks, VisualSound every 2 days. The most recent releases landed on November 1, 2026 and November 7, 2026 respectively.

Scorecard5 real differences · 5 level
Music Spectrograph versus VisualSound: the parameters behind the verdict, then further details
ParameterMusic SpectrographVisualSound
Price$9.99 — better$19.99
Rating2.5 (4 ratings)5.0 (1 ratings) — better
Positive reviews50.0% of reviews—
Number of ratings4 — better1
Update frequencyEvery 6 weeksEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, iPodiPhone, iPad, Mac
Requires iOS12.4 — better18.0
Further details — not scored
Size1 MB40 MB
Age rating4+4+
DeveloperHotPaw ProductionsMike Gazzaruso

Customer experience

Music Spectrograph

All ratings4 ratings
Positive25.0%
Neutral25.0%
Negative50.0%
Written reviews8 reviews
Positive50.0%
Neutral12.5%
Negative37.5%

VisualSound

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Music Spectrograph

No in-app purchases

None

VisualSound

No in-app purchases

Questions

Is Music Spectrograph free?
Music Spectrograph costs $9.99, with no in-app purchases.
Is VisualSound free?
VisualSound costs $19.99, with no in-app purchases.
Which has better reviews, Music Spectrograph or VisualSound?
VisualSound is rated higher. Music Spectrograph averages 2.5 out of 5 from 4 ratings, while VisualSound averages 5.0 from 1 ratings.
Do Music Spectrograph or VisualSound have ads?
Neither Music Spectrograph nor VisualSound shows ads.
Which is updated more often, Music Spectrograph or VisualSound?
Music Spectrograph ships an update every 6 weeks, and VisualSound every 2 days. Most recently, Music Spectrograph was updated on November 1, 2026 and VisualSound on November 7, 2026.

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