Vetro vs polymachine
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Vetro
This app provides a visual metronome with dynamic beat synchronization via Ableton Link. It supports custom animations and works across multiple devices, enhancing practice and recording sessions.
- Visual metronome
- Ableton Link synchronization
- Custom GIF and Lottie animations
- Multiple visualization modes
- Cross-device support (iPhone, iPad, macOS)
- Adjustable time signatures
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Vetro is a visual metronome that can synchronize automatically to a shared tempo on the network using Ableton Link protocol. Different visualization modes are included. Customize it by importing any animated GIF or Lottie animation (just drag and drop) and it will play in sync to your music. Use it in any of your devices (iPhone, iPad and macOS supported). On macOS, it can be freely resized to any window size and kept visible at all times so you are always aware of the current tempo. Blend it with your favorite apps by adjusting window opacity, and even allow mouse events to pass through so you can keep it visible while controlling the apps underneath. Use it as a visual enhancement for your recording sessions or as a new kind of metronome when practicing. Many devices can be used at the same time and they will all sync together. This may be cool when jamming! ## Features * 11 visual modes included. * 7 metronome sounds included. * Accurate timing. * Ableton Link synchronization. * Set any time signature. * Play animated GIF and Lottie animations in sync. * iPhone, iPad and macOS support. ## macOS-only features * Always visible option. * Translucent window: Adjust background and content opacity independently. * Pass-through mouse events. Keep Vetro on top of other apps without interrupting your workflow. * Automatically show/hide Vetro window when receiving Link Start/Stop commands.
polymachine
This app offers a unique approach to music creation by combining geometric principles with modular synthesis. Explore generative algorithmic drums, oscillators, and harmonies, with specialized tools for 808s and kick drum integration.
- Geometric music theory integration
- Modular synthesis engine
- Generative algorithmic drums
- Oscillators and harmonies
- 808 and kick drum linking
- Log drum pattern generator
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Geometry of Music + Modular Synthesis Powerhouse, Generative Algorithmic Drums + Oscillators and Harmonies. FL Soft Clip and FL Distortion on 808s. 808s tied to Kicks. Log Drum Pattern generator
Screenshots
Verdict
The clearest difference is rating: Vetro at 4.0 against polymachine's 3.4. Vetro also leads on in-app purchases (none vs 2). polymachine's advantage is update cadence (weekly vs every 2 months) and review sentiment (67% vs 40%). On price, ads, 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
Both are free to download. polymachine sells 2 one-off in-app purchases. Vetro asks for nothing beyond the download.
Vetro holds the better App Store score, 4.0 against 3.4. That said, the two scores are not equally well evidenced: polymachine has 13 ratings behind it against 2, so its average is the more settled of the two. Written reviews complicate that: 40% of Vetro's written reviews are positive against 67% of polymachine's, so the app with the better star average is not the one people write more warmly about.
Vetro ships an update every 2 months, polymachine weekly. The most recent releases landed on October 30, 2026 and October 31, 2026 respectively.
| Parameter | Vetro | polymachine |
|---|---|---|
| Price | Free | Free |
| Rating | 4.0 (2 ratings) — better | 3.4 (13 ratings) |
| Positive reviews | 40.0% of reviews | 66.7% of reviews — better |
| Number of ratings | 2 | 13 — better |
| Update frequency | Every 2 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Requires iOS | 17.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 6 MB | 106 MB |
| Age rating | 4+ | 4+ |
| Developer | Joan Duat | Mike Gao |
Customer experience
Vetro
polymachine
In-app purchases
Vetro
No in-app purchases
polymachine
- Sound Expansion$1.99
- Pro Features$34.99
Questions
Is Vetro free?
Is polymachine free?
Which has better reviews, Vetro or polymachine?
Do Vetro or polymachine have ads?
Which is updated more often, Vetro or polymachine?
Other comparisons
