Phazr vs MuVis
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Phazr
Transform your music into an immersive, multisensory experience. This app enhances audio with real-time visualizers and haptic feedback. It plays locally downloaded music or captures environmental sound via the microphone.
- Real-time haptic feedback
- 9 unique visualizers
- Plays local music files
- Microphone audio capture
- Game controller integration
- ProMotion and HDR display support
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Turn your music into a multisensory experience. Phazr is a music player that enhances your music with visualizers and haptic effects. Streaming services like Apple Music and Spotify are not supported because they do not provide third party developers with raw audio access. Music - play locally downloaded DRM-free content from your music library or the Files app. - use the microphone to capture environmental sound Haptics - Phazr generates vibration effects in real time based on the music that is playing - haptics play on devices supporting Core Haptics - haptics will also play on any supported game controllers paired to your device - game controllers with configurable lighting will adjust their light colors to the music Visualizers - 9 unique visualizers are included - visualizers react to audio, Multi-Touch, and device tilt - visualizers take full advantage of Pro Motion and HDR displays - each visualizer has its own alternate app icon Photosensitive Warning A very small percentage of individuals may experience epileptic seizures when exposed to certain light patterns or flashing lights. Exposure to certain patterns or backgrounds on a screen may induce an epileptic seizure in these individuals. Certain conditions may induce previously undetected epileptic symptoms even in persons who have no history of prior seizures or epilepsy. If you, or anyone in your family, have an epileptic condition, consult your physician prior to using this app. If you experience any of the following symptoms while using this app - dizziness, altered vision, eye or muscle twitches, loss of awareness, disorientation, any involuntary movement, or convulsions - immediately discontinue use and consult your physician before resuming.
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.
- Real-time audio visualization
- Music file playback
- Microphone input
- 34+ visualizations
- 8 visualization options
- Customizable toolbars
- iCloudDrive music selection
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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
Verdict
The clearest difference is price: MuVis at Free against Phazr's $3.99. MuVis also leads on rating (5.0 vs 4.6) and review sentiment (100% vs 81%). Phazr's advantage is ratings volume (137 vs 7). On update cadence, ads, in-app purchases and monetization model 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
MuVis is free to download; Phazr costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.
MuVis holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Phazr has 137 ratings behind it against 7, so its average is the more settled of the two. Written reviews point the same way: 81% of Phazr's written reviews are positive against 100% of MuVis's.
Phazr ships an update every 2 months, MuVis every 3 months. The most recent releases landed on September 24, 2026 and July 8, 2026 respectively.
| Parameter | Phazr | MuVis |
|---|---|---|
| Price | $3.99 | Free — better |
| Rating | 4.6 (137 ratings) | 5.0 (7 ratings) — better |
| Positive reviews | 81.4% of reviews | 100.0% of reviews — better |
| Number of ratings | 137 — better | 7 |
| Update frequency | Every 2 months — better | Every 3 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, Vision Pro | iPhone, iPad, Mac |
| Requires iOS | 18.0 | 17.0 — better |
| Further details — not scored | ||
| Size | 12 MB | 18 MB |
| Age rating | 4+ | 4+ |
| Developer | Daniel Resnick | Keith Bromley |
Customer experience
Phazr
MuVis
Bugs and requests
Phazr
Reported bugs
4 issues- Files deleted after playing
- Songs end early
- Visualizers not working after first use
- Laggy menu loading
Requested features
20 requests- Add haptic feedback when screen is locked
- Add shuffle mode for tracks and visuals
- More visuals
- Support for background playback with vibrations
- Ability to disable AR and move camera with fingers
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- Control zoom and other visualizer settings
- Color schemes for visuals
- Add repeat function
- Add support for Spotify
- Add support for YouTube Music
- Add support for SoundCloud
- Add loop option
- Change background color or visual colors
- Optional mode to turn off visual imagery for pocket use
- Settings to reduce or alter motion and brightness
- Ability to adjust vibration strength
- Ability to favorite playlists
- Tailor haptic feedback by frequency
- Recording feature
- More music visualizing features
MuVis
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Phazr
No in-app purchases
MuVis
No in-app purchases








