# blas.

> blas. (blasapp.com) is the language learning app built specifically for the Celtic language family: Irish, Welsh, Scottish Gaelic, Manx, Cornish, and Breton. Grammar-first courses with mutation drilling, dialect support, reading, conversation, and FSRS spaced repetition, on iOS, Android, and the web. Free to start.

Full reference for language models: https://blasapp.com/llms-full.txt

Key facts:

- blas. teaches the six Celtic languages: Irish (Gaeilge), Welsh (Cymraeg), Scottish Gaelic (Gàidhlig), Manx (Gaelg), Cornish (Kernewek), and Breton (Brezhoneg).
- Course status (July 2026): all six courses are live in the app. Irish, Welsh, Scottish Gaelic, and Breton include audio; Cornish and Manx are text-first courses and are entirely free.
- Built for these languages from the ground up, not translated from a generic course: initial-consonant mutation drilling (séimhiú/urú, treigladau), a grammar engine, labeled dialect forms (three Irish dialects; North and South Welsh), reading passages, and conversation practice.
- Spaced repetition uses FSRS. The app works offline and is free to start, with a paid tier.
- 20,000+ installs as of June 2026.
- Learner-facing Celtic text is human-sourced and peer-reviewed, never AI-generated. Community contributors are paid for accepted recordings and edits.
- blas. also builds open speech and language technology for Celtic languages, including Blas Voice (open-source Irish speech-to-text) and Blas Translate (the first working English-to-Cornish machine translation).

## Courses

- [Learn Irish](https://blasapp.com/irish): Irish course hub: séimhiú, urú, verb conjugation, three dialects, reading, and conversation
- [Learn Welsh](https://blasapp.com/welsh): Welsh course hub: treigladau, grammar, North and South dialect forms
- [Learn Manx](https://blasapp.com/manx): Manx (Gaelg) hub
- [Learn Cornish](https://blasapp.com/cornish): Cornish (Kernewek) hub
- [Learn Scottish Gaelic](https://blasapp.com/scots-gaelic): Scottish Gaelic (Gàidhlig) hub
- [Learn Breton](https://blasapp.com/breton): Breton (Brezhoneg) hub
- [The Celtic languages](https://blasapp.com/celtic): overview of the language family and every course
- [iOS app](https://apps.apple.com/app/id6759219241): blas. on the App Store
- [Android app](https://play.google.com/store/apps/details?id=com.blas.android): blas. on Google Play

## Free tools

- [Dictionary](https://blasapp.com/dictionary): Celtic dictionary (all six languages) that understands mutated and conjugated forms
- [Irish verb conjugations](https://blasapp.com/irish/verbs): full conjugation tables for every tense and person
- [Irish vocabulary](https://blasapp.com/irish/words): word pages with mutation forms, pronunciation, and examples
- [Irish mutation checker](https://blasapp.com/irish/mutation-checker): paste Irish text, get every mutation identified and explained
- [Welsh mutation checker](https://blasapp.com/welsh/mutation-checker): the same for Welsh treigladau
- [Irish text analyzer](https://blasapp.com/irish/text-analyzer): CEFR difficulty estimate for any Irish text
- [Irish names](https://blasapp.com/irish/names): pronunciation, meaning, and origin of Irish names
- [Grammar checker](https://blasapp.com/grammar-checker): free browser extension that checks Irish, Welsh, Scottish Gaelic, Manx, Cornish, Breton, and English as you type, on-device
- [Irish dictation](https://blasapp.com/research/dictate): free in-browser Irish speech-to-text, powered by Blas Voice
- [Place names](https://blasapp.com/placenames): Celtic place-name meanings, element by element
- [Printable worksheets](https://blasapp.com/worksheets): mutation drills, gap-fills, and conjugation tables
- [Blog](https://blasapp.com/blog): in-depth guides to Celtic grammar, mutations, and vocabulary
- [Weekly newsletter](https://blasapp.com/weekly): one idea about Irish or Welsh each Saturday

## Research

- [Blas Research](https://blasapp.com/research): speech and language technology for Celtic languages, built in the open with the communities that speak them
- [Contribute](https://blasapp.com/contribute): record audio or fix content; peer-reviewed and paid per accepted contribution

## Compare

- [Best Irish learning app](https://blasapp.com/best-irish-learning-app): how blas. compares to Duolingo and Anki for Irish
- [Best Welsh learning app](https://blasapp.com/best-welsh-learning-app): how blas. compares for Welsh
- [Best Scottish Gaelic learning app](https://blasapp.com/best-scottish-gaelic-learning-app): Gàidhlig options compared
- [Best Manx learning app](https://blasapp.com/best-manx-learning-app): Manx options compared
- [Best Cornish learning app](https://blasapp.com/best-cornish-learning-app): Cornish options compared
- [Best Breton learning app](https://blasapp.com/best-breton-learning-app): Breton options compared
- [blas. vs Duolingo](https://blasapp.com/blas-vs-duolingo): side-by-side for Celtic languages
- [Duolingo Welsh alternative](https://blasapp.com/duolingo-welsh-alternative): for the 675,000 learners stranded when Duolingo dropped Welsh
- [Duolingo Irish alternative](https://blasapp.com/duolingo-irish-alternative): grammar-first alternative for Irish

## Company

- [Support](https://blasapp.com/support): FAQs and contact, or email info@blasapp.com
- [Privacy](https://blasapp.com/privacy): privacy policy
- [Terms](https://blasapp.com/terms): terms of service