Ferromagnetic vs BariFlow
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
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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
BariFlow
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BariFlow is a chord change trainer for baritone ukulele players. Pick a course, hit play, and chord diagrams flow by in time with the beat while you strum along on your real instrument. No microphone, no account, no lessons to unlock. Just steady, focused practice that makes your chord changes automatic. WHY BARIFLOW - Made for baritone ukulele: 48 real chord shapes (major, minor, 7th, m7) shown as clear four-string diagrams (DGBE) - Musical progressions: courses built from real harmony, including mellow ii-V-I moves, classic progressions, 12-bar blues, waltzes and jazz turnarounds - See what is coming: the current chord and the next one are always on screen, so your fretting hand is ready before the beat arrives - Reference audio: hear each progression with a clean plucked baritone ukulele sound - Tempo control: slow it down to nail the shapes, speed it up to build reflexes - Landscape mode: put the phone on a music stand and read it like a chart - Works offline and everything stays on your device 91 COURSES ACROSS 11 SECTIONS Basics, mellow and slow, classic progressions, blues, bluegrass and country, folk and Celtic, waltz time, minor keys, jazz, all 12 keys, and speed workouts. FREE AND PRO The starter courses are free. A single one-time purchase of BariFlow Pro unlocks all courses, saved progressions and practice history. No subscription, no recurring charges.
Screenshots
Verdict
The clearest difference is update cadence: BariFlow at daily against Ferromagnetic's weekly. On price, ads, in-app purchases 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
Both are free to download. Ferromagnetic sells 6 in-app purchases, starting at $2.49 per month and BariFlow sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Ferromagnetic ships an update weekly, BariFlow daily. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.
| Parameter | Ferromagnetic | BariFlow |
|---|---|---|
| Price | Free | Free |
| Rating | 4.1 (26 ratings) — better | — |
| Positive reviews | 80.0% of reviews | — |
| Number of ratings | 26 — better | — |
| Update frequency | Weekly | Daily — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 16.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 23 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Eke | KENYA MASUKO |
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)
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- 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
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- 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
BariFlow
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Ferromagnetic
- FM Visualizer7 Days trial$2.491 Month
- FM Producer7 Days trial$3.991 Month
- A generous tip$0.99
- FM Visualizer One-TIme$17.99
- FM Producer Upgrade$39.99
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- FM Producer One-Time$59.99
BariFlow
- BariFlow Pro$1.99









