Top: bright, manifest 昭 (The sun 日 is calling 召: It is becoming bright and manifest!) - [to summon or calling together 召 = with the sword 刀 and the mouth 口], bottom: fire 灬
Mnemonic
As if the sun was summoned, is the fire that illuminates.
The app has many other functions, such as character selection according to difficulty, practice programs, handwriting recognition and success statistics!