Show the cards one by one, and if they can read them correctly, give them a 〇.
If they struggle a little, give them a △.
If they can't read them, give them an ×.
Record the time it takes them to read them all, and also record the time it takes them to read them all.
Show your child the hiragana they couldn't read and teach them how to read them.
Show your child the cards they couldn't read again to see if they can read them.

Apparently, doing this every day will help them become fluent in reading hiragana. Apparently, once a day is enough. Doing it too many times will make them bored. Even if your child wants to try again, have them do it the next day.
That's what their teacher said.
Since we actually use real cards, the school provided the cards.

We created this app for several reasons: using real cards is inconvenient to carry around, recording is time-consuming, measuring time is a hassle, and the punched holes and the ゜ on the cards can be confusing.

Please feel free to use it.