If you want an installer, download one of the above packages; otherwise, see below. You're probably running 64-bit Windows, in which case you want the 64-bit package.
The portable app has NO INSTALLER. If you want an installer, download the regular app above.
You can also browse the source code.
For a list of changes, see the release notes.
For printable help, download Polymeter Help.
Older releases are available here.