rianthai

Learn Thai the way you learned your first language.

Watch comprehensible video, track your hours, and let understanding grow on its own. No flashcard grind, no grammar drills — just input, with Bai cheering you on.

Free to start — or browse without an account.

Just press play

A curated library of slow, single-speaker Thai you can actually follow from day one.

Hours, not points

Track real input time toward research-backed milestones. Tones emerge around hour 50.

Tone-aware captions

Every syllable colored by tone. Tap any word for romanization and meaning.

The number that matters

2,500 hours to comfortable fluency.
Here’s the whole road, drawn honestly.

No tool shows the long road honestly. Ours does. The bar below is the dashboard’s centerpiece — at hour 12, at hour 247, at hour 1,800.

David’s dashboard · hour 247.3
About 10% of the road.
50
150
300
600
1k
1.5k
2.5k
247.3 hr
Phase 2·Building Comprehension
At 1.2 hr/day, 300 hr in ~7 weeks.

Duolingo shows you “Level 12” with no ceiling. LingQ shows you words known with no ceiling. We show you the whole road. It’s humbling and clarifyingin equal measure — and we think that’s the only honest thing to do.

Walk the whole road →
How it works

Three steps. That’s the whole product.

01
Watch Thai content.

Any source. Comprehensible Thai, PailinsKitchen, podcasts. We don't own the content — we sit on top of what you already do.

02
Captions, lookups, saving — handled.

Tone-colored captions over YouTube. Hover a word, see its meaning. Click to save a word into your SRS deck. One keystroke, no friction.

03
Come back, see the progress.

The dashboard shows hours, comprehension trends, vocabulary growth — and the whole 2,500-hour road. Then it gets out of your way.

The first hour is the hardest.

Open the dashboard. Watch one video. See the bar move.

Free forever, and no account needed to browse the library. Create one to save your hours and words.