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Field note · Learn Thai

One tone off and “horse” becomes “dog”: why I built glot.it for Thai

Why I built glot.it, a Thai app that ties new words to the language you already speak: 161 free lessons, tone practice, an AI tutor, and what Pro adds.

Kenji Sakuramoto · kensaurus合同会社 ·

Thai has five tones. Say "maa" with a high tone and you mean horse. Let it rise and you mean dog. glot.it is a Thai app for the people who trip over exactly that.

I speak several languages, and the thing that has always helped me most is tying a new word to a language I already know. But people come to a language from different places: a different first language, a different level, a different way of remembering things. Most language apps don't account for that, and they don't let you shape your own vocabulary or your own path through the course.

A memory hook in the language you already speak

Every word card in glot.it can carry a memory hint. The AI looks for a word in your language that sounds like the Thai, then builds a short scene around what the Thai word means. Set the app to Japanese and the hints come in Japanese.

A word card from the first lesson: the Thai word ขอโทษ, its romanization khǎw-thôot with tone marks, the English meaning Sorry / Excuse me, an illustration of a woman with her palms pressed together, and below it a memory hint in Japanese about a thief who steals a tote bag and says sorry
A word card with a Japanese memory hint
Captured 2026-10-16 from the live app (guest, v1.105), with the app set to Japanese. The hint is AI-written.

A few other things already bend to the learner:

Some of it isn't built yet. As the card above shows, word meanings are still in English, and with Japanese selected some screens stay in English too. You can't rearrange your own path yet either. Letting each learner pick their words and their route, in their own language and their own way of remembering, is where glot.it is heading.

161 lessons, the script and the tones

There are 161 lessons across 12 stages, with a short reading stage before them that teaches you to put letters together into syllables. The alphabet screens sort the consonants into the three classes that decide a syllable's tone, and a tone drill puts two words side by side that differ only in tone, with audio for each.

The Learn tab's Your path: lesson 1, Daily Greetings & Essentials, with a Start lesson button, then lessons 2 to 8 from Food & Dining to Question Words & Patterns, each with its word count. The tab bar reads ホーム, 学習, 単語, Tutor, Me
The first eight lessons
The Thai alphabet screen: cards for 44 consonants, 18 vowels, 5 tones and 10 numerals, filters for 9 mid, 11 high and 24 low consonants, and a Japanese tip saying to start with the 9 mid-class consonants because their tone rules are simplest
The alphabet, by consonant class
Captured 2026-10-16 from the live app (guest, v1.105), with the app set to Japanese. The English left in the interface is shown as it is.

Words you meet go into a word bank and come back for review just before you'd forget them. You can add your own words and sort them into folders. For speaking, there are role-play scenarios and a voice tutor.

It's made for people starting Thai for a trip, for a Thai partner or family, or for work. You can start as a guest without making an account, in the browser or in the iPhone and Android apps.

What's free, and what Pro adds

All 161 lessons, the alphabet, the word bank and reviews are free. The AI tutor, the voice tutor and pronunciation feedback are free too, up to a daily allowance. One condition: a free account pauses after 7 days without use. Your data is kept for 90 days, and you can pick up where you left off.

Pro lifts those daily limits (the AI tutor goes from 10 to 200 turns a day) and lets you download lessons and words for offline use. On the web it costs US$6.99 a month or US$49.99 a year. In the iPhone and Android apps it's an in-app purchase, and the store shows the price for your country.

See it in the exhibit hall