Thanh Dieu: Mandarin Tone App

Thanh Dieu helps Vietnamese speakers say Mandarin tones right, with explanations in Vietnamese. You say a syllable, see what the app heard and try again. WHO IT IS FOR • Vietnamese speakers learning Mandarin who want to get tones right from the first day. • Learners preparing for HSK and HSKK who want practice and mock tests with a report in Vietnamese. • Anyone who wants a short daily speaking habit in Chinese with a voice call and an AI chat partner. TONES • Say a syllable and see your pitch line against the target (labs: an on-device estimate, not yet tuned on Vietnamese voices). • Pinyin with tone marks and the tone sequence of every sentence; turn pinyin off when you are ready. • Shadow model sentences by tone: normal or slow model voice, record, play back and see what was heard. SINO-VIETNAMESE • The Sino-Vietnamese reading of each character to remember meanings faster, with warnings about false friends whose meaning differs from Vietnamese. HSK AND HSKK • HSK words with pinyin and spaced repetition, so words come back just before you forget them. • HSKK mock tests (labs) and an HSK mock test with a report in Vietnamese; scores are estimates. • Chinese dictation that marks wrong tones. SPEAK EVERY DAY • A daily plan: you set your goal and time, the app proposes a plan, and nothing changes until you approve it. • A free 3-minute voice call with Hac every day, so you practise speaking out loud. • Chat with an AI partner; replies come with pinyin and a Vietnamese gloss. A SHORT PRACTICE ROUTINE 1. Set your goal and time, then read the plan the app proposes and approve it. 2. Say a few syllables and compare your pitch line with the target. 3. Shadow a model sentence at normal or slow speed, record it and play it back. 4. Review HSK words with pinyin and the Sino-Vietnamese reading. 5. Finish with the 3-minute call with Hac, or a Chinese dictation that marks wrong tones. YOUR DATA • Tone drills run on your phone. Your voice is sent only when you use cloud AI (conversation, call, mock test scoring) and is not stored. FAIR PRICING Free every day: 20 scored syllables, the first HSKK test of each level, one dictation, a 3-minute call and level 1-2 words. Thanh Dieu Pro removes these limits. Cloud AI uses credits, with a free monthly top-up. Cancel anytime in Google Play. QUESTIONS Q: Can I turn pinyin off? A: Yes. Pinyin with tone marks and the tone sequence are shown for every sentence; turn pinyin off when you are ready. Q: Are the scores official? A: No. Scores are estimates for practice, not official HSK/HSKK results. Q: Is my voice stored? A: Tone drills run on your phone. Voice is sent only when you use cloud AI and is not stored. Q: Will the plan change without asking me? A: No. The app proposes a plan and nothing changes until you approve it. Q: What is Hac? A: Hac is the voice you talk to in the free 3-minute call you get every day. Q: What is marked labs? A: The pitch line and the HSKK mock tests. The pitch line is an on-device estimate that has not yet been tuned on Vietnamese voices. Q: What is the Sino-Vietnamese reading for? A: It gives the Sino-Vietnamese reading of each character so you remember meanings faster, with warnings about false friends. Q: When is my voice sent to a server? A: Only when you use cloud AI: conversation, the call or mock test scoring. Q: What does cloud AI cost? A: Cloud AI uses credits, and a free monthly top-up is included. Thanh Dieu Pro removes the daily limits. Q: Where does the dictionary data come from? A: From CC-CEDICT (CC BY-SA 4.0) and Unihan. Full credits are in the app (Me > Licences). Q: What does the free version include? A: 20 scored syllables a day, the first HSKK test of each level, one dictation, a 3-minute call and level 1-2 words. Scores are estimates for practice, not official HSK/HSKK results. Not affiliated with any exam organiser. Dictionary data: CC-CEDICT (CC BY-SA 4.0) and Unihan; full credits in the app (Me > Licences).