This free sketching app lets you do quick-and-dirty prototyping to try out (and share) user-interface ideas.

• Sketch a series of screens using your finger or a stylus.

• Link them together with hotspots.

• Hit “Play” and try out (or demo) your rough UI.

• Share your prototype as clickable HTML by email, Dropbox, etc.*

The goal of Quick Proto is to let you draw rough ideas as fast as possible - sketch, link, share, done.

Works on all screen sizes (phone, small tablets, big tablets). Better with a stylus, particularly the Samsung Note series.

This app is FREE and has NO ADS. I hope you find it a useful addition to your design toolkit. Feedback is very welcome; let me know how I can improve it to suit your workflow.

Permissions: Photo/media/files (external storage) - This is needed for sharing prototypes (see below).

• Sharing a prototype requires an SD card. Most recent devices include either an SD card slot or a “virtual” SD card (e.g. Samsung S3, Nexus 7, etc.), so this is probably only an issue on older Android devices.

Credits:
This app was developed using:

• B4A by Anywhere Software. Thanks Erel!
• UltimateListView, BitmapPlus, Cache, MaskedEditText, Gesture Detector, and NineOldAndroids by Frédéric Leneuf-Magaud
• Archiver by Frédéric Leneuf-Magaud & Kamran Zafar
• stdActionBarHelper by corwin42
• Dialogs by Andrew Graham
• MFlib by MaFu
• Custom Toast by Margret
• Air View by barx
• MSDynamicGridView by thedesolatesoul
• MESShareLibrary by ssg
• FontAwesome by NJDude
• MaterialDesignIcons.com
• Android Asset Studio (http://j.mp/androidassetstudio)