Free, open and yours.
No sign-up, no email, no trial that expires. You download it and that is that.
iPhone and iPad
On the App Store, free and with no account. The voices come down with the install itself, so you open it, share a text and it speaks. This is the most complete version: audiobooks, Siri, the widget, the bridge and lock-screen controls.
iOS or iPadOS 17 and up · the voice model takes about 200 MB
macOS
Apple Silicon and Intel, in a notarised .dmg. With the three global shortcuts, the paragraph editor, local OCR for scanned PDFs and audiobook export. No wind-up key here: everything is unlocked.
macOS 12 or later · about 398 MB of voice model
Windows
An .exe or .msi installer for x64, with the same shortcuts and the same features as the Mac build. Any laptop from the last few years synthesises faster than real time.
Windows 10 or later, x64 · about 398 MB of voice model
Linux
AppImage and .deb for x64. Global shortcuts depend on your desktop environment; if yours are already taken, swap them in Preferences.
x64 · about 398 MB of voice model
From source
The whole project is published: the desktop and mobile apps (Tauri, Rust and Svelte), the synthesis engine, the reading script with its vendored CLDR grammars, and this very website. With Rust and Node installed, cargo tauri build produces your own copy. If the published binaries lag behind the iPhone version, this is the quick way round: the source is always current.
Rust and Node · full instructions in the README
The first time, Yappy downloads the voice model (398 MB). On the iPhone it arrives with the install; on the computer, the first time you open the app. After that you never need a connection again.
Desktop builds are published on GitHub. If the version you find there is older than the iPhone one, the latest has not been uploaded yet: the source is up to date and builds with cargo tauri build.
Android
It is built and working, but not published yet: the Google developer account is still being verified. When it ships, it will be announced here and in the repository.