# Vietnamese Tone Trainer: Learn Vietnamese Tones > Learn Vietnamese tones with live pitch feedback: calibrate your voice range, then your pitch curve is drawn over the target tone curve, with one named hint per mistake. The 6 tones on 18 syllables, then 12 tone-pair words. Free, no account, nothing ever leaves your device. *Interactive tool: enter your values at https://toollantern.win/learn-vietnamese-tones/ and results update instantly in your browser.* ## Frequently asked questions ### Do I need to know Vietnamese to use Vietnamese Tone Trainer? No. The app starts from zero: it teaches the six tones on 18 syllables with tone marks and English glosses. You need no Vietnamese at all, just a microphone and a willingness to say ma six different ways. ### Why do I have to calibrate my voice range first? Vietnamese tones differ by pitch LEVEL as well as shape. Ngang sits in the middle, sac climbs to the top, huyen falls to the bottom. Calibration slides from your lowest to your highest comfortable note so the app knows where your middle, top and bottom are. Without it, a flat tone at any height could be any tone. ### Does the app judge my accent or how high my voice is? Neither. It judges your pitch against the target tone's level and shape, measured inside your own calibrated range. A low voice and a high voice are graded the same way, because every utterance is measured against the range you calibrated. ### What is the difference between huyen and nang? Almost none in pitch: both fall from low-mid. The difference is length and voice quality. Nang is short and clipped, cut off with a glottal stop. Huyen is held smooth for a full beat, often with a breathy voice. The app uses duration as the tiebreak when their pitch scores are nearly tied, and says so honestly when duration is in between. ### Why does the app say my hoi is wrong when it sounds right? Hoi dips down and rises back only to the middle. Rise too high and it reads as nga; skip the rise and it reads as huyen. If your range has shifted since calibration, recalibrate. If a native speaker says your hoi sounds right, trust them over the app. Pitch tracking approximates tones. ### Do Southern Vietnamese speakers use the same tones? Mostly, but not exactly. The target shapes describe standard Northern (Hanoi) tones. In much of the South, hoi and nga sound alike, and the other tones sit at slightly different heights. The app teaches the Northern system; a Southern teacher can show you the Southern realisations. ### Does the app record my voice? No. Voice frames are analysed on your device and discarded immediately. Nothing is recorded, uploaded or shared, and the page security policy blocks connections to every outside server. The Offline proof panel shows the live request log to prove it. ### Does it work offline? Yes, after your first visit. The app and all the lessons are saved on your device, so it works with no network at all. There is no model to download: pitch detection is pure signal processing that ships with the app. ### How do points, levels and badges work? Each matched tone is +10 points, and a perfect quiz round adds +20. Levels are New Voice, Tone Learner, Tone Star, and Master of Vietnamese Tones. Tone pairs unlock at 50 points. Badges cover the first match, all 18 syllables, all 12 tone pairs, a perfect round, and a 7-day streak. ### Can I delete my progress? Yes. Open Offline proof on the home page and press Delete all my data, or open Settings and press Clear progress. Everything is stored only in your browser, on your device. --- Interactive version: https://toollantern.win/learn-vietnamese-tones/