關於「Sketch file」標籤，搜尋引擎有相關的訊息討論：

Concepts: Sketch, Note, Draw – Apps on Google Play評分 4.2 (6,802) · 免費 · AndroidConcepts is a flexible space to think, plan and create. Sketch your ideas on the infinite canvas, write notes and doodles with tilt + pressure, ...Concepts: Sketch, Note, Draw - Mga App sa Googl