A side-by-side look at Zen's three applications (Play, Library and Convert) and VirtualPiano.net, using facts we checked on October 18, 2026.
One computer, one connection, a clean browser profile, checked on October 18, 2026. Your results will differ, and VirtualPiano.net's ads change from visit to visit.
Zen Virtual Piano
About 75% less
Zen Virtual Piano used about 75% less memory than VirtualPiano.net.
VirtualPiano.net
Compared against
VirtualPiano.net, the reference for the comparison.
Renderer memory in our test, including ad frames, after a short play session. Median of three runs, with the empty browser subtracted from each run.
Zen Virtual Piano
About 55
Zen Virtual Piano's /play page, about 0.9 MB transferred.
VirtualPiano.net
About 1,150
VirtualPiano.net's home page, about 3.1 MB transferred.
Requests counted in the first 20 seconds after the page loaded, median of three runs, rounded. This counts requests, not speed.
For Google's lab test and real-user data, open the live PageSpeed Insights reports: Zen Piano Report | VirtualPiano.net Report
| Feature | Zen Piano | VirtualPiano.net |
|---|---|---|
| Where you play | Web app, Chrome extension, desktop app, and a touch layout at /piano | Web piano, plus a web app for phones and tablets |
| Offline use | Extension and desktop app | No |
| Instruments | 16 | 24 |
| Visual themes | 134 | 25 |
| Sheet library | More than 2,000 sheets, with filters | 1,668+ sheets |
| Making your own sheets | Convert turns MIDI files into notation on your device, plus custom sheets | Music Sheet Producer for Plus members, song requests |
| Learning tools | Magic Play, Demo, Play Along and Practice | Key Assist and how-to-play guides |
| Recording length | Up to 30 minutes, WAV export | 30 sec (Free) / 5 min (Plus) |
| Community | No public community or rankings | Global community page, challenges, and a pianist rating with medals for Plus members |
VirtualPiano.net: 24 instruments and 25 themes, with Key Assist to follow the keys, sustain and a metronome. The free tier shows ads.
Zen Virtual Piano: 16 instruments and 134 visual themes on a 61-key keyboard, with Magic Play, Demo, Play Along and Practice (speed, transpose, loop and metronome).
VirtualPiano.net: 1,668+ sheets, browsable by category, difficulty, artist, A to Z and latest, with a place to request songs.
Zen Virtual Piano: More than 2,000 sheets, filtered by genre, difficulty, duration, chords and composer.
VirtualPiano.net: Plus members get a Music Sheet Producer to compose sheets and submit them to the site.
Zen Virtual Piano: Convert turns a MIDI file into playable notation on your device, with five difficulty levels. You can also add custom sheets.
VirtualPiano.net: A global community page where members rate and comment on sheets and request songs, challenges you send to a friend by email link, and a pianist rating with medals for Plus members.
Zen Virtual Piano: No public community or ranking. Sign-in is optional.
Zen Play runs as a web app, a Chrome extension and a desktop app, and the /piano layout is built for touch screens.
Open /play in a modern browser with nothing to install. On a phone or tablet, /piano gives you a layout built for touch.
BEST FOR: QUICK SESSIONS & UNIVERSAL ACCESS
The Zen Piano Extension lives in your browser toolbar, so you can open your piano from any tab. It works offline.
BEST FOR: BROWSER POWER USERS & SEAMLESS FLOW
The Zen Piano Desktop app gives you a dedicated window for playing, apart from your browser tabs. It works fully offline.
BEST FOR: FOCUSED OFFLINE PRACTICE & PRIVATE SESSIONS
VirtualPiano.net is a free online piano with 24 instruments, a global community page, challenges, and 1,668+ sheets. Recording there is 30 sec (Free) / 5 min (Plus), and its Plus plan also removes ads and saves your settings.
Zen Virtual Piano is three applications. Play is the 61-key piano, Library holds more than 2,000 playable sheets, and Convert turns MIDI files into notation on your device.
Both are free to start. Pick the one whose strengths match how you practice.
Common questions
In our test on October 18, 2026, Zen Virtual Piano used about 75% less renderer memory than VirtualPiano.net after a short play session. That is the median of three runs and includes ad frames on VirtualPiano.net. Results vary with your computer and the ads shown.
On October 18, 2026 Zen's /play page made about 55 requests (about 0.9 MB) in the first 20 seconds after it loaded, and VirtualPiano.net's home page made about 1,150 (about 3.1 MB). That counts requests, not speed. Google's PageSpeed Insights reports for both pages are linked above.
Yes. Zen Virtual Piano supports offline practice through its Extension and Desktop apps. We found no offline mode on VirtualPiano.net.
Try Zen Virtual Piano free in your browser. No download and no sign-up needed.
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