My wife and I built a collaborative platform for reusable checklists.

Users can share templates of checklists with few select users or everyone, copy templates of other users (like forking a repository on github), submit suggestions for checklists (like opening a PR on github).

I've got the idea after reading Atul Gawande's 'Checklist Manifesto' (https://en.wikipedia.org/wiki/The_Checklist_Manifesto). Plus I kept forgetting things when going to the office, gym or traveling.

We've tried a few other checklist apps, like Microsoft To Do. But they all seem more geared towards one-off lists or lists that repeat on schedule. Plus web versions and collaborative features always felt like an afterthought.

Wiederhol is free for private use.

iOS users can install our app via https://apps.apple.com/de/app/wiederhol/id6739186169. Android users can install https://wiederhol.com/ as a PWA (Progressive Web Application).

Tech stack: Ruby on Rails, React, PostgreSQL, https://dokku.com/ for hosting on Hetzner, https://pwabuilder.com for the iOS app.

PS: Wiederhol means 'repeat' (imperative verb form) in German.