Language immersion extension · Fluidity family
Independent immersion, optional Fluidity connections
Submersion is a standalone language immersion browser extension in the Fluidity family. Other family applications are optional.
Explore a word further
Semantide supplies dictionary entries and deeper word exploration. Word-card links can open Morphanese for sentence analysis or Tubonics for spoken examples. Following a link sends the chosen word or sentence to that service.
Connect shared vocabulary
Optional sign-in connects enrollment, decks and knowledge through Fluidity. Source context and reading documents remain local. Signed-in review requires a separate review grant and producer approval; it is not currently activated in production. No separate Fluidity app is required for core watching, reading or guest review.