Just by handwriting a kanji, you can see not only how to read that kanji, but also the meaning and reading of candidate idioms at once!
It also supports web searches if you want to find out more.
It is a convenient free dictionary application that can be used not only as a handwritten kanji dictionary, but also as a Japanese dictionary and an English-Japanese dictionary.

This app "Handwritten Kanji Dictionary - Kanji/Japanese/English dictionary to check by handwriting" is free.
Please use all means!