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   * [marvelapp.com](https://marvelapp.com/) — Design, prototyping and collaboration, free limited for 3 projects
   * [Zeplin](https://zeplin.io/) — Designer and developer collaboration platform. Show designs, assets and styleguides. Free for 1 project.
   * [figma.com](https://figma.com) — Online, collaborative design tool for teams; free tier includes unlimited files and viewers with a max of 2 editors and 3 projects
-
+  * [designer.io](https://designer.io/) — Design tool for UI, illustrations and more. Has a native app. Free
+  
 ## Data Visualization on Maps
 
    * [geocoder.opencagedata.com](https://geocoder.opencagedata.com/) — Geocoding API that aggregates OpenStreetMap and other open geo sources. 2,500 free queries/day