Penultimate Guitar is an alternate frontend for Ultimate Guitar.

It focuses on mobile usability and Spotify integration. All features are available on mobile*.

It is built with TypeScript, Next.js, and Tailwind and deployed on Vercel. It works in tandem with a Postgres instance on a DigitalOcean through Prisma. The source code takes a lot of inspiration from Alculator.

Features include:

The source code is available here. The deployed version can be found here.

Chord tooltips are only possible through chords-db and react-chords, both by David Rubert.

I built it because I was mad at how poor Ultimate Guitar is on mobile devices.

* Except chord tooltip inversions, though its only because I haven't thought of a simple interface for it yet