This game app is a freeware works on iPhone・iPad.

At app Store, download 'Sum10'

Select 2 or more 'number circles'. If their sum is just 10, they disappear.
Score Attack mode and Time Attack mode.

[Game Design]
Takeshi Onishi

[Programming]
Takeshi Onishi

[Graphics]
Takeshi Onishi

[Music]
Kazunori Kurokawa