Keep your film history
Continue using Letterboxd for its social film strengths. Mosaic does not ask you to give that up.
Letterboxd alternative
Keep movies in context with the shows, games, and music that shaped the same years.

One personal media library
A wider home after Letterboxd
Movies
TV shows
Games
Music
Memories, Life Eras, rewatches, and taste in the same record.
Letterboxd remains the stronger choice for public film reviews, community lists, and film-first discovery.
A film-focused social network and public review community
Movie diaries, watchlists, ratings, tags, and shareable lists
Deep film-specific discovery and community activity
Movies, TV shows, games, and albums in one private library
Life Eras, memories, rewatches, and cross-media patterns
A personal media personality built from your own history
A practical way to use both
Continue using Letterboxd for its social film strengths. Mosaic does not ask you to give that up.
Track television, games, and music beside films instead of maintaining unrelated histories.
Use Life Eras and insights to revisit what you watched, played, and heard during the same period.
The honest answer
Mosaic is the better fit when the missing piece is not another film feed, but one home for your whole entertainment history.
Not exactly. Letterboxd is built around film and its social community. Mosaic is built around a private, cross-media history that includes movies, TV, games, and music.
Yes. They serve different jobs well. Keep Letterboxd for film discussion and use Mosaic to connect film with the rest of your media life.
A direct Letterboxd migration is not yet available in the current public import flow. Do not delete your Letterboxd export. Broader migration support is planned.
Start with the media that matters, then let the history become more useful over time.