The short answer
Yes, for writing — Skritter is one of the strongest options there is for learning to write Traditional characters, and it has several genuinely Taiwan-specific touches: a Taiwan Ministry of Education font setting, a free Zhuyin mini-course, and Skritter-made word lists for Taiwan's own A Course in Contemporary Chinese textbooks. There's one real caveat, which is that Skritter is built on Simplified characters underneath. And it's a writing and vocabulary tool, not a course that teaches you to speak.
Does Skritter support Traditional Chinese?
Yes, fully. You can study Simplified characters, Traditional characters, or both, and if you turn on studying both, the Traditional forms of characters you've already learned get added in. Skritter's own help docs walk through how it maps Simplified and Traditional forms — including the tricky cases where one Simplified character stands for several Traditional ones, like 台, which can correspond to 臺, 台, 檯, 枱, or 颱. That depth is rare: most apps either ignore Traditional characters or treat them as a font toggle.
Does Skritter have Taiwan-specific options?
Yes, two that matter. First, the Skritter app has a setting for fonts typical in Taiwan, based on the font published by Taiwan's Ministry of Education (MOE), so characters appear the way you'll see them in Taiwan rather than in mainland-style forms. Second, Skritter's own textbook lists include A Course in Contemporary Chinese (當代中文課程), the Traditional-character series from National Taiwan Normal University's Mandarin Training Center — useful if you're studying there or following that series (see our guide to studying Mandarin in Taiwan). One small tell in the other direction: the decks its App Store listing highlights are HSK decks, China's proficiency test, rather than Taiwan's TOCFL (here's how the two tests differ).
Does Skritter teach Zhuyin?
Yes — Skritter offers a free Zhuyin (Bopomofo) mini-course, a short video course with an accompanying deck for learning the 37 symbols and their sounds, with its downloadable course materials listed at $0 in Skritter's store. What Skritter's current help docs don't spell out is whether you can switch every reading throughout the app from Pinyin to Zhuyin, so we won't claim that either way. If you're new to the system, our guide to learning Zhuyin covers it from scratch.