Left: metal 金, right: exude/squeeze 录 (A pressing hand ヨ makes liquid 水 to drop out, as in ‘green 緑’ with its green plant sap.) - but here: to embosse)
Mnemonic
Metal can be pressed (or embossed), and thus is used for recordings.
The app has many other functions, such as character selection according to difficulty, practice programs, handwriting recognition and success statistics!
