Seenr is a series, movies and anime tracker. This addon marks what you play as watched in your Seenr library.
This addon serves no streams. It is a tracker, not a source: it records what you open so it lands in your library, and it stays invisible in the sources list by design. Nothing appears in your stream list after installing it.
Configuration is required. Create a free Seenr account, copy your personal addon URL from your settings, and paste that URL into your client. The public manifest identifies nobody, so it is configuration-only.
Setup guide: https://seenr.app/en/integrations/stremio?utm_source=stremio-addons
Known limits, stated upfront: the addon protocol never reports back that playback finished, so Seenr does not silently check things off. A stream request lands as a suggestion you confirm in one tap, and watch duration is not available.
Free, no ads, web plus iOS and Android.