Comparison

Ferromagnetic vs MuVis

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

Head to head
About

Ferromagnetic

Transform music into real-time visual art with dynamic audio-reactive effects. Enhance personal listening, create ambiance for gatherings, or perform live with captivating visuals that sync to every beat. Offers thousands of unique visual combinations for a fresh experience with every song.

Highlights
  • Real-time audio-reactive visuals
  • Multi-band frequency analysis
  • Automatic beat detection
  • Metal-powered rendering engine
  • Multi-layer compositing system
  • Customizable visual parameters
  • Thousands of unique visual combinations
Features
Read full description

Ferromagnetic: Music Visualizer & VJ App for iPhone, iPad, and Mac Ferromagnetic turns Spotify, SoundCloud, YouTube, and any other sound into stunning real-time visuals. It's a professional audio visualizer for everyone, from home listening and house parties to DJ sets, live shows, and VJ performances. FM Visualizer: Effortless Background Visuals Start a System Broadcast and Ferromagnetic follows the audio of Spotify, SoundCloud, YouTube, and most other apps on your device. Or use the microphone to visualize anything around you, from a DJ set to a live band. The 12-band frequency analysis and tunable beat detection catch every beat and note, and a GPU-accelerated Metal engine renders it all in multiple layers. Pick a Vibe like Calm, Energetic, Trippy, or Retro to set the mood in one tap. Or let Ferromagnetic take the wheel and build new scenes on its own from over 1,000 combinations. Set how fast the scenes change and choose from ten transition styles, including Morph, Zoom, and Color Distance. Choose from over 20 audio-reactive effects: the signature Ferrofluid and Electromagnetic fields, plus Starfield, Petals, Laser, Glitter, Cloud, Refractions, and more. Build your own scene from three effect layers and particles, each with its own blend mode, and tune every layer to the bass or the highs. Particles burst and flow with the sound, and glitch and shake hit harder as the volume rises. Transform the image with Kaleidoscope, Droste Spiral, Voronoi Mirror, or Tunnel, then shape the look with pixelation, dithering, blur, and color palettes like Vivid, Warm, or Triadic. Show your own logo text on screen, perfect for cafes, bars, and venues. Mirror the visuals to a TV or projector with AirPlay or a cable, and the screen stays awake for as long as the music plays. Visuals render at up to 60 fps. FM Producer: Live Visual Performance On iPad, FM Producer turns Ferromagnetic into a VJ app for live shows. The dual-deck interface works like a DJ controller: prepare the next scene on one deck, then crossfade it in. Add the iPad camera or NDI® sources as live layers, and send your visuals to OBS, Resolume, and other apps with NDI output. Connect a MIDI controller or keyboard, map any control with MIDI Learn, and trigger effects and scenes without touching the screen. FM Producer also unlocks the complete Mac app, with video, image, and 3D model layers, presets, and video recording. Try It Free Download Ferromagnetic for free, then unlock only what you need with an affordable subscription or a one-time purchase. One purchase works on iPhone, iPad, and Mac. Already on FM Visualizer? Your purchase counts toward FM Producer. NDI® is a registered trademark of Vizrt NDI AB. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula

About

MuVis

This app creates dynamic, real-time visual representations of music being played from files or a device's microphone. Users can cycle through numerous visualizations and options, control playback, and switch between audio sources.

Highlights
  • Real-time audio visualization
  • Music file playback
  • Microphone input
  • 34+ visualizations
  • 8 visualization options
  • Customizable toolbars
  • iCloudDrive music selection
Read full description

MuVis is an open-source macOS & iOS app for music visualization. It renders informative (and musically useful) graphical displays in real time from music files being played - or from the device's microphone. Real-time music visualization is an exciting endeavor - providing the user with dynamic visual and aural stimulation and edification. When the MuVis app first opens, the on-screen display should look somewhat like the first screenshot shown above and the computer's speakers should be playing music from a pre-loaded royalty-free music file. (Currently, the song file is "The Elevator Bossa Nova" from Bensound.com.) The on-screen display shows a real-time dynamic visual representation of the audio that you are hearing. The top and bottom toolbars contains buttons and sliders to allow you to control what you see. Triple-tap your screen to show/hide these toolbars. At the bottom left are two buttons labelled by left- and right-chevrons. Clicking the left one changes the display to the previous visualization, and clicking the right one changes the display to the next visualization - which allows you to cycle through the thirty-four visualizations currently provided by the app. Also, you can simply swipe left or right to change the visualization. Adjacent to these Visualization chevrons are two Option chevrons. When programming these visualization algorithms, there are numerous variations and options available to the developer. These buttons allow the user to select to see any of eight variations. The particular variation rendered is different for each visualization. Also, you can simply swipe up or down to change the option rendered. Adjacent to these Option chevrons is a “Pause” button. When clicked, it stops the music playback and freezes the visualization display. The button label changes to “Play” which, when clicked, causes the music playback and the visualization display to continue. The adjacent button has a "Microphone" icon. When pressed it stops playing the audio from the selected song file (and also stops it's visualization), and starts playing the live audio from the microphone (and starts it's visualization). The label then becomes a slashed microphone - which, when pressed, performs the reverse actions and changes the icon back to "Microphone". The next button has a "Music List" icon. It allows you to select whatever songs you want from your own iCloudDrive folder. Selecting a song causes that song to play - and the visualization to render its dynamic attributes. The adjacent button has a “Waveform” icon with a minus sign. When clicked, it passes the audio signal through a “spectral enhancer” filter which reduces the display of noise (usually percussive effects which smear spectral energy over a large frequency range), and enhances the display of spectral lines (usually the harmonics of musical notes). Finally, at the right end of the bottom toolbar are two buttons labelled UserG (for User Guide) and VisG (for Visualization Guide). Clicking either button activates a “Quick Look” popup window to display the app's documentation. The top toolbar contains two sliders - one controlling "Visualization Gain" and the other controlling "Visualization Treble Boost". As their names imply, sliding them adjusts the gain and slope of the visual data representation. The source code for this app is posted at www.github.com/Keith-43

Screenshots

Ferromagnetic4 screens
MuVis4 screens

Verdict

The call

The clearest difference is rating: MuVis at 5.0 against Ferromagnetic's 4.1. MuVis also leads on in-app purchases (none vs 6) and review sentiment (100% vs 80%). Ferromagnetic's advantage is update cadence (weekly vs every 3 months) and ratings volume (26 vs 7). On price, ads, device support and iOS requirement 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

Both are free to download. Ferromagnetic sells 6 in-app purchases, starting at $2.49 per month. MuVis asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

MuVis holds the better App Store score, 5.0 against 4.1. Both are backed by a comparable volume of ratings — 26 and 7 respectively. Written reviews point the same way: 80% of Ferromagnetic's written reviews are positive against 100% of MuVis's.

UpkeepUpdate frequency

Ferromagnetic ships an update weekly, MuVis every 3 months. The most recent releases landed on October 21, 2026 and October 14, 2026 respectively.

Scorecard6 real differences · 4 level
Ferromagnetic versus MuVis: the parameters behind the verdict, then further details
ParameterFerromagneticMuVis
PriceFreeFree
Rating4.1 (26 ratings)5.0 (7 ratings) — better
Positive reviews80.0% of reviews100.0% of reviews — better
Number of ratings26 — better7
Update frequencyWeekly — betterEvery 3 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, MaciPhone, iPad, Mac
Requires iOS16.0 — better17.0
Further details — not scored
Size23 MB18 MB
Age rating4+4+
DeveloperDaniel EkeKeith Bromley

Customer experience

Ferromagnetic

All ratings26 ratings
Positive76.9%
Neutral3.8%
Negative19.2%
Written reviews70 reviews
Positive80.0%
Neutral7.1%
Negative12.9%

MuVis

All ratings4 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews5 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

Ferromagnetic

Reported bugs

14 issues
  • Song titles don’t update
  • Custom image wasn’t saving in presets (reported fixed)
  • Logo makes imported images blurry
  • App crashes on launch
  • Poorly implemented controls (MacOS)
Show 9 more
  • Does not work with Apple Music for some users
  • Does not sync with music for some users
  • Repeating visualizer scenes
  • Shoddy integration with Streamlabs
  • Does not work with microphone for some users
  • Visuals are seemingly random and endless
  • App asks to update when there's no update
  • Crashes every time audio input is changed after update
  • Recurring shapes pop up every few seconds

Requested features

20 requests
  • Add a 'go back' button for controls
  • Add Airplay mirroring or tvOS app
  • More options in visualizer types
  • Configurable presets for cycling settings
  • Ability to stream to TV without a cable
Show 15 more
  • Apple TV app development
  • More shaders and 4k-8k resolution options
  • More options to customize and create own shaders
  • More style options (e.g., retro equalizer, symmetric bars)
  • Ability to navigate a catalog or favorite visuals
  • Rotation feature for effects
  • Output to a file without screen capture
  • Choose output frame rate and size
  • Get rid of or manipulate recurring shapes
  • Remove Source/editor column from viewer window
  • Option to load songs directly from user's library
  • Transparency option for windows
  • More customization options
  • Effects inspired by Apple's classic visualizer
  • Bug fix for audio input crashes

MuVis

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Ferromagnetic

Subscriptions2
  • FM Visualizer7 Days trial$2.491 Month
  • FM Producer3 Days trial$3.991 Month
One-time4
  • A generous tip$0.99
  • FM Visualizer One-TIme$14.99
  • FM Producer Upgrade$29.99
Show 1 more
  • FM Producer One-Time$49.99
None

MuVis

No in-app purchases

Questions

Is Ferromagnetic free?
Ferromagnetic is free to download, with in-app purchases available.
Is MuVis free?
MuVis is free to download, with no in-app purchases.
Which has better reviews, Ferromagnetic or MuVis?
MuVis is rated higher. Ferromagnetic averages 4.1 out of 5 from 26 ratings, while MuVis averages 5.0 from 7 ratings.
Do Ferromagnetic or MuVis have ads?
Neither Ferromagnetic nor MuVis shows ads.
Which is updated more often, Ferromagnetic or MuVis?
Ferromagnetic ships an update weekly, and MuVis every 3 months. Most recently, Ferromagnetic was updated on October 21, 2026 and MuVis on October 14, 2026.

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