Apps like TrainBPMF : 注音符号（ㄅㄆㄇㄈ / bopomo

Here are some great alternatives to TrainBPMF : 注音符号（ㄅㄆㄇㄈ / bopomo by TIworks :
Chinese Pinyin-Learn Mandarin
Chinese Pinyin-Learn Mandarin
★4.6
Write Chinese | learn Chinese
Write Chinese | learn Chinese
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Chinese Stroke Order
Chinese Stroke Order
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HanBook: Learn Chinese Smarter
HanBook: Learn Chinese Smarter
★4.7
Greater Chinese
Greater Chinese
★4.4
Learn Chinese 学中文-JUZI Chinese
Learn Chinese 学中文-JUZI Chinese
★3.3
PokiBook - Chinese Dictionary
PokiBook - Chinese Dictionary
★4.3
Chinese Hanzi Dictionary
Chinese Hanzi Dictionary
★4.5
Chinese Pinyin Game / Mr.Panda
Chinese Pinyin Game / Mr.Panda
★4.7
Pinyin Input
Pinyin Input
★4.0
Chinese Writer
Chinese Writer
★4.8
How to write Chinese Word
How to write Chinese Word
★3.7
HK Chinese Lexical List
HK Chinese Lexical List
★4.1
Write Right: Chinese Strokes
Write Right: Chinese Strokes
★4.5
Chinese Vocabulary for Myanmar
Chinese Vocabulary for Myanmar
★4.4
NIU Chinese - HSK Reading
NIU Chinese - HSK Reading
★4.7