Why I kept a 94-item game collection tracker local-first

I was working on a collection utility for Aniimo and deliberately left out accounts.

The tracker only needs to remember which of the current 94 creatures a player owns. Adding authentication would mean email verification, password recovery, a database, and privacy work before the user could tick one box.

The current version stores progress in the browser and filters owned or missing entries. The tradeoff is explicit: it is fast and private, but clearing browser data or changing devices loses the state.

That feels like the right first version. Export/import can solve backups later without forcing an identity layer on everyone.

The working tracker is here: https://aniimo.cc/tools/collection-tracker

For small single-purpose tools, what feature would make you add accounts: sync, public profiles, collaboration, or something else?