
Sound
Five tones, and the rules that decide them
Tone is not decoration in Thai, it is part of the word. มา maa is come and ม้า maa with a high tone is horse. Nothing changed but the pitch.
The five
Five example words, one for each tone. Play them in order first, then try saying each one back before you move on.
Mid
กา gaa crow Level pitch in the middle of your voiceLow
ป่า bpàa forest Low, flat pitch - slightly below normal speechFalling
ข้าว khâo rice Starts high and falls sharplyHigh
ม้า máa horse High pitch - sounds tense and emphaticRising
ขา khǎa leg Starts low, dips, then risesTwo things decide the tone before any mark does
The class of the first consonant, and whether the syllable is live or dead.
Consonant class
Mid (9 letters), high (11) and low (24). The consonant index groups all 44 this way.
Live syllable
Ends in a long vowel or in m, n, ng, w, y. The sound can be held. มา maa, กิน kin.
Dead syllable
Ends in a short vowel or in a stop: k, t, p. It cuts off. จะ ja, รัก rak.
Put those two together with the tone mark and you can read the tone of a word you have never seen. Here is how.
Play them back to back
The difference stops being theoretical about four plays in. Open two tones at once and go down them in turn, rather than trying to hold one in your head.
Mid tone สามัญ saman 27 words
Low tone เอก eek 20 words
Falling tone โท thoo 24 words
High tone ตรี trii 14 words
Rising tone จัตวา chattawaa 17 words
Hearing them is a separate job from knowing them

You can learn the five contours off this page in an afternoon. Telling them apart at speaking speed is ear training, and ear training is repetition, which is unbearable unless something makes it bearable.
So two of the app's five games are about nothing else. Tone Boss is one boss per tone and you beat it by hearing which one you were given. Tone Tap is the same job against a clock.
Both are available to explore on this website for free. The rest of what it does.
Tone practice with a mic, in the app
Free, like the other 33 chapters.
What free includes