物極必反 Chinese the way Taiwan writes and speaks it.

Say a word and see your pitch contour drawn over the model, with each syllable marked right or wrong. Scoring runs on the device. When iOS has its offline Chinese (Taiwan) speech model, the app also checks the syllables themselves: it hears 資 when you meant 知 and tells you whether the initial or the final slipped.

• 1 · high, flat
• 2 · rising
• 3 · dip, rise
• 4 · sharp fall

Watch a character’s strokes animate in order, then trace them yourself. Your strokes are scored against each stroke’s path, so “written unaided” means unaided. A brush pad lets you repeat a character with the model faint beneath it, then test yourself with it hidden.

• Taiwan stroke order where the source has it
• The compound words each character appears in
• The Root System shows which parts you already know

Four stories in sixteen chapters, read at your belt, with grammar notes and a comprehension check after each chapter. Tap any word for its meaning; one more tap adds it to your reviews.

• 第一次來到台灣 First Time in Taiwan
• 虎姑婆 The Tiger Grandmother
• 林投姐 Lintou Sister
• 台灣第一條鐵路 Taiwan’s First Railway

Ten branching roleplays, at least one for every belt. Your partner’s next line depends on what you chose, and you say every reply out loud to have its tones scored. Written for Taiwan, scripted and offline. There is no chatbot.

• A 7-Eleven at night, the MRT at Taipei Main Station, a stall at 士林夜市
• Ordering lunch, meeting your partner’s family, the pharmacy
• Renting a flat, seeing the doctor, returning something faulty, a job interview

Find your level, then prepare for the test in the format it is set.

• A 45-item placement test
• 100 listening comprehension items
• 24 writing tasks with model answers and rubrics
• Mock listening and reading papers, laid out to the format tocfl.edu.tw publishes

It reports the share you got right and the level that suggests. It says plainly that no practice app can turn that into an official score, because TOCFL does not publish a conversion.

Look up any of the 14,300 words by characters, pinyin or English, and save any of them to your reviews.

• 寫 Draw to look up. Draw a character you cannot type. It is matched against the strokes of all 3,525 characters, in any stroke order.
• 讀 Read Anything. Photograph a sign or a menu, pick a photo, or paste text. The app reads it on the device, splits it into words, and shows how much of it you can read at your level.