Drawing for katakana ヒ does not seem to work about kakugo

[blastrock]

It works for me, are you sure you are drawing the stroke in the correct direction?

[propfeds]

I have tried too many times.

[propfeds]

I have also encountered the same issue with 七, which coincidentally looks much like ヒ.

[ichisadashioko]

I am working on machine learning model for recognizing kanji handwriting (image-based or stroke-based). I would love to complete it one day and may be able to add that feature to your app.

[ichisadashioko]

Here is the demo project for android.