Below is what is in the app right now. Not planned, not "coming soon", not a roadmap with
optimistic dates. If it is on this page you can open it today, and the handful of things that
genuinely are not built yet are named at the bottom.
The lessons
34 chapters, 178 lessons, 1704 exercises. What makes them
worth doing is that they are not all the same exercise wearing different hats, which is the
usual failure mode.
19 different exercise types
Multiple choice, translation, listening, dictation, sentence building in both directions, matching, speaking, picture matching, gap-fill, odd-one-out, "what would you reply", "what does this tell you about him", and a social-situation format that asks which of four things is the polite one. Nineteen, counted from the content, not rounded up.
Speech recognition that tells you which word was wrong
Speaking exercises listen to you and compare the result to the target word by word. Not a percentage and a shrug: the specific syllable that missed, highlighted.
Every Thai word has its own audio file
1880 audio files, bundled with the app. Neural Thai text-to-speech, rendered once and shipped as files - not your phone's built-in voice, which mangles tones and sounds different on every device.
A placement test, if you already know some
Fifteen questions, a per-chapter accuracy breakdown, and an offer to unlock everything up to where you actually are. Nobody wants to sit through "hello" for the fourth time.
Chapter checkpoints
A test at the end of a chapter that mixes everything in it, so you find out what stuck before moving on.
Practice tools
Nine separate drills for the specific things that are hard about Thai, rather than one lesson format asked to do everything.
Tone trainer
The five tones with pitch curves, then an ear quiz that plays a word and asks which tone it was. This is the single most useful thing in the app for a beginner.
Character tracer
Trace all 68 letters over a ghost glyph with your finger. Muscle memory does what staring at a chart does not.
Shadowing
Listen to a native recording, record yourself saying it, play both back. Brutal and effective. Pro keeps the whole timeline so you can hear yourself improve month over month.
Reading drill
Name-the-glyph rounds over the whole alphabet, plus tap-any-word passages for when you are ready for real text.
Classifier quiz
The counting words, drilled in both directions. Thai does not let you say "three dogs" and this is where you make peace with that.
Flashcards, listening quiz, numbers drill
The classics, for when you want something low-effort on a bus.
Conversation practice
Scripted roleplay scenarios you can work through solo.
It remembers what you get wrong
Most apps track what you have done. The useful thing to track is what you have failed.
Spaced repetition
Every word you meet gets scheduled to come back just before you would have forgotten it. Standard SRS, quietly running under everything.
Smart Review Pro
A drill built entirely from the words you personally keep missing, including the ones you fixed and then broke again. It knows the difference between a word you never learned and a word you keep relapsing on.
Mistake history
Every word you have missed, grouped, with whether you are actually fixing it. Free shows the last seven days; Pro shows all of it.
Games, because streaks are not enough
Five of them, and they are actual games rather than a lesson with a timer bolted on.
Thai Mystery
Detective cases you solve by reading Thai clues. Briefing, investigation, accusation. Getting a perfect run gives you a life back.
Tone Boss
A tone battle. Yes, really.
Tone Tap
Hear a word, tap its tone before the clock runs out.
Word Match Rush
Speed matching against the timer.
Falling Words
Catch the right meaning before it hits the bottom.
Other people
Learning alone is why most people stop.
Practice with a friend, live
Two learners, one roleplay scenario, a four-character room code and a real-time chat. Starter phrases are there for when it stalls, which it will.
Friends and a weekly leaderboard
Add people by invite code and see who actually studied this week.
Leagues
Eleven tiers with weekly promotion and relegation, plus cups. Petty, motivating, works.
The reference material
All of it is also on this website, free, no account, if you would rather read than install.
The full writing system
68 characters with mnemonics, consonant classes and example words.
A 120-phrase phrasebook
Searchable, grouped by situation, every one with audio.
20 graded reading passages
Things you will use in Thailand this week
Eight small tools that have nothing to do with lessons and everything to do with being there.
Taxi address card
Put in where you are going, show the driver the Thai. This one earns its place the first time you use it.
Currency converter
Live rates, and it reads the amount out in Thai number words.
Tip calculator
Thai tipping norms are not the same as yours.
Weather
Approximate, no location permission needed.
Measurements, time and date
Converting units and reading Thai dates, which use a different year.
Essential phrases
The short list, for when you need one right now.
The parts that keep you coming back
None of this teaches you Thai. All of it decides whether you are still here in March.
17 animated companions
One travels with you and reacts to what you get right and wrong.
Meet them. They are earned with gems from studying, never with money.
Streaks, with insurance
Freezes so one missed day does not undo three months. Pro tops them back up automatically.
Daily quests and weekly challenges
Small goals that are not just "do a lesson".
Achievements, titles and levels
Over a hundred of them, including some you will not see coming.
Themes and cosmetics
Seven accent colours, light and dark, plus companion and profile customisation.
What costs money
One subscription, Sabai Pro, at €8.99 a
month, €69.99 a year or €99.99 once for
lifetime. Seven-day trial on the recurring plans.
It buys an AI tutor you can ask anything or hold a conversation with at your level, Smart
Review built from the words you personally keep relapsing on, full mistake and shadowing
history instead of seven days, every companion and theme unlocked, unlimited hearts for the
games, streak insurance, double XP and a daily gem stipend.
The distinction that matters: Ling's $89.99 a year buys access to its lessons. Pro buys
none, because no lesson, chapter or recording is behind it and none ever will be. Hearts have never applied to lessons either, only to the games.
What Pro adds, in detail · what free covers.
What is not built yet
Because a features page that only lists wins is a features page you should not trust.
iOSAndroid only. No iPhone build and no date for one.
The Play Store listingNot published yet.
An advanced tierThe course tops out at upper intermediate. Register and idiom are not written.
Pronunciation reports over timeIndividual speaking exercises score you. Nothing yet tracks which sounds you struggle with across weeks.
Try the parts that work in a browser
No install, no account. The tone checker runs the same rules the
app does, the alphabet has the same recordings, and
chapter 1 is the same vocabulary you would start with.
Sabai 
