フォントつく〜る|手書き文字をフォントに is an art & design app by 株式会社 ココロフリー with 1+ downloads (about 2 estimated). Install growth, rank history, SDKs and ad networks.
From the store listing: “You can easily create original fonts from your handwritten characters. The fonts you create can be used on your computer or tablet. Supports hiragana, katakana, alphanumeric characters, and kanji.”