Northern or southern Vietnamese?

Roughly forty million speakers each. Neither is more correct, and the writing is the same — but the sounds differ enough that learning both at once means holding two systems in your head for the hardest parts.

What actually differs

	North (Hanoi)	South (Saigon)
Tones	Six	Five — hỏi and ngã merge
d, gi, r	All three sound like z	All three stay distinct; r is rolled or retroflex
s / x	Both s	Distinct — s is retroflex
tr / ch	Both like ch	Distinct — tr is retroflex
Endings	Kept distinct	Heavy merging — much more homophony
Spelling	Close to pronunciation	Offset: hỏi/ngã and the endings

Read that table again from the learner's side. The North has fewer consonant distinctions but more tones. The South has fewer tones but more consonants — and far more homophones, because its endings collapse together.

Which is easier?

Neither, and anyone who tells you otherwise is picking a side. The North gives you one less tone to produce, and the hardest one at that — no glottal break to learn. The South gives you a spelling that matches less well, so you have to memorize which word takes which mark.

So how do you choose?

Go where your people are. If you are learning for a partner's family, a city you are moving to, or a community near you, that decides it. Vietnamese speakers understand both without effort; you are choosing what comes out of your mouth, not what you will hear.

If nothing points either way: the North is the accent of broadcast media and most teaching material, and its spelling-to-sound match is closer. That is a reasonable default, not a rule.

Why it has to be decided on day one

The letter d is "z" in Hanoi and "y" in Saigon. If a course shows you both every time, you carry two pronunciations for five of the hardest letters, and you hesitate on every word that contains one.

This app asks the question before the first lesson and then teaches one system — and it lets you change your mind, because people do.

Start chapter 1

Also: the six tones · the one the South drops