Available now
The web version is ready now for short drills such as Pitch Monitor, Online Piano, Echo, Breath Racer, Pitch Bird, Resonance Radar, and Vibrato Log.
A vocal practice app you can open now
HengHeng already works as a browser-based vocal practice app: pitch detection, breath training, and vibrato analysis with no install. Native iOS and Android apps are in development.
Should I use the web app or wait for native apps?
If you want to warm up, check pitch, or train breath today, use the web version first: it opens in mobile and desktop browsers without installation. Leave a contact if you want the native iOS or Android app when it launches.
Notify me at launch
Leave a contact and we'll ping you the moment iOS / Android lands.
Only for launch news — no spam.
Got it — see you at launch!
You're already on the list — we'll ping you at launch 🎵
Web
Runs in your browser, no install
Use now →
iOS App
App Store · coming soon
Coming soon
Android App
App stores · coming soon
Coming soon
Phone shortcut
Add the web app to your home screen
Open HengHeng in your mobile browser and choose “Add to Home Screen” to launch it like an app — the fastest way until native apps arrive.
How to choose
Use the web now, native apps later for long-term practice
Best as a home-screen shortcut
If you practice on a phone, adding the web app to the home screen gives a more app-like experience and avoids searching for the URL each time.
Native app plan
The iOS and Android apps will be better for long-term history, reminders, offline capability, and deeper system audio behavior; the web version remains usable before launch.
Privacy and microphone
Real-time practice needs microphone permission; silent tools like Piano do not. Features that save history or notification contacts explain their use before submission.
FAQ
Before downloading or installing
What is the difference between web and native apps?
The web version is no-install and ready now, good for short practice and shareable links. Native apps are better for long-term history, reminders, offline use, and a fuller mobile experience.
Does adding to home screen make it offline?
Not fully. Some resources may be cached by the browser, but real-time tools, sign-in, history, and notifications may still need network access.
What is my email or phone used for?
It is used for iOS / Android launch notifications and necessary product messages, not unrelated spam. The page also handles duplicate submissions.
What should I know when practicing on mobile browser?
Allow microphone access, turn off silent mode or use headphones, and reduce background noise. Speaker playback can affect microphone-based pitch detection.