The Celtic Languages
Six living Celtic languages, two branches, one app built around them. blas. teaches Irish and Welsh today, with Scottish Gaelic, Breton, Cornish, and Manx in development.
Goidelic branch
Irish, Scottish Gaelic, and Manx share a common ancestor in Old Irish. Lenition and eclipsis are the signature mutations.
IrishGaeilge
~1.7M with some ability, ~70k daily
First official language of Ireland. Three dialect families: Munster, Connacht, Ulster.
Learn Irish →
Scottish GaelicGàidhlig
~57k speakers
Closely related to Irish, with its own grammar, literature, and communities across Scotland.
About Scottish Gaelic →
ManxGaelg
~2,200 speakers, growing
Revived after the death of its last native speaker in 1974. The third Goidelic language alongside Irish and Scottish Gaelic.
About Manx →
Brythonic branch
Welsh, Cornish, and Breton descend from Common Brittonic. Soft, nasal, and aspirate mutations replace the Goidelic system.
WelshCymraeg
~538k regular speakers
Spoken across Wales, with strong communities in the north and west. One of the great revival success stories.
Learn Welsh →
BretonBrezhoneg
~200k speakers
Spoken in Brittany, France. The only Celtic language with a continental homeland.
About Breton →
CornishKernewek
~600 fluent, growing
Revived in the 20th century after extinction. Closely related to Welsh and Breton.
About Cornish →
Why Celtic languages need their own app
All six Celtic languages share features that generic language apps struggle with: initial consonant mutations, verb-first word order, the copula, dialect variation, and noun declension. Generic apps either skip these features or get them wrong.
blas. was built around them. Mutation drilling, dialect-aware audio, structured grammar, and spaced repetition that adapts to your weak spots.
Start with Irish or Welsh
Free to start. No credit card needed.