Both Sketch and Whimsical start at $12/mo. Whimsical is rated higher at 4.7/5 vs Sketch's 4.5/5.
Design toolkit for Mac focused on UI/UX design and collaboration
Visual workspace for flowcharts, wireframes, and mind maps
Independent analysis based on features, pricing, and user ratings
Sketch uniquely offers UI Design, Prototyping, Symbols & Libraries. Whimsical uniquely offers Flowcharts, Wireframes, Mind Maps. Both share 2 features including Templates, Export.
Both Sketch and Whimsical start at $12/mo.
Paid plans only
Free tier available