Top: disease 疒 (An ice-冫-cold building 广 makes sick), inside: 奂 (shows a woman giving birth; better recognizable in the traditional: 瘓 with head ⺈, two breasts ハ and spread legs 人)
Mnemonic
The "disease" of woman giving birth, in general for: disease.
The app has many other functions, such as character selection according to difficulty, practice programs, handwriting recognition and success statistics!