Ferromagnetic vs AV Synth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- 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
Read full descriptionHide 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
AV Synth
Create dynamic, layered visual compositions that react to live music. Design and modulate up to five independent visual layers with complex effect chains. Save and recall presets for live performance or studio use.
- Layered visual compositions
- Live audio-reactive graphics
- Chained effect processing
- Parameter automation
- Saveable presets
- High-quality video recording (PRO)
- NDI network streaming (PRO)
Read full descriptionHide full description
AV Synth – Visual Instrument is a real-time procedural graphics engine for creating reactive, layered visual compositions. Design, blend, and modulate up to five independent visual layers, each powered by live-generated visuals and chained effect processing. Build complex effect chains per layer, automate parameters to your music, and sculpt motion, color, and dynamics in real time—just like playing a visual instrument. Every creation can be saved as a preset and recalled instantly for live performance or studio work. The PRO version unlocks high-quality video recording and NDI network streaming for professional workflows. This app is designed for: - Live visual performance - Audio-reactive motion graphics - Experimental visual synthesis https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
Ferromagnetic and AV Synth both sit at 4.1 stars, but that hides the real split: 100% of AV Synth's written reviews are positive against 80% of Ferromagnetic's. AV Synth also leads on update cadence (every 3 days vs weekly). Ferromagnetic's advantage is ratings volume (26 vs 1). On price, rating, 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
Both are free to download. Ferromagnetic sells 6 in-app purchases, starting at $2.49 per month and AV Synth sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.1 for Ferromagnetic against 4.0 for AV Synth. That said, the two scores are not equally well evidenced: Ferromagnetic has 26 ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 80% of Ferromagnetic's written reviews are positive against 100% of AV Synth's.
Ferromagnetic ships an update weekly, AV Synth every 3 days. The most recent releases landed on October 16, 2026 and October 13, 2026 respectively.
| Parameter | Ferromagnetic | AV Synth |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (26 ratings) — better | 4.0 (1 ratings) |
| Positive reviews | 80.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 26 — better | 1 |
| Update frequency | Weekly | Every 3 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, iPad, Mac — better | iPhone, iPad |
| Requires iOS | 16.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 23 MB | 40 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Eke | Marvin Krueger |
Customer experience
Ferromagnetic
AV Synth
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 moreShow fewer
- 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 moreShow fewer
- 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
AV Synth
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Ferromagnetic
- FM Visualizer7 Days trial$2.491 Month
- FM Producer3 Days trial$3.991 Month
- A generous tip$0.99
- FM Visualizer One-TIme$14.99
- FM Producer Upgrade$29.99
Show 1 moreShow fewer
- FM Producer One-Time$49.99
AV Synth
- AV PRO Weekly$6.997 Days
- AV Pro Yearly7 Days trial$39.991 Year









