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Hi there! I would like to share with you the latest version of Spotify prototype. Now you can listen to music while browsing the prototype.

I simulated a 10 second timer that counts down from 10 to 0. This is very simple to do. All you need to do is change the text property of the text value with a custom value and include a delay of 1 second. Then add a callback for the next number with a delay of 1 second. Repeat this until you get to the number 0. There is no need to use variables to simulate a timer. If you are looking for someone to help you with your prototype, we are available for hire at: http://protonerds.com/

I created this prototype of a wildlife photography app to experiment with horizontal and vertical scrolling interactions. What do you think?

An as close as possible copy of the IFTTT onboarding experience. This prototype is also made in 4 other tools (Pixate, Origami, Framer & Form) to compare the differences between them. More info: http://medium.com/sketch-app-sources/five-app-prototyping-tools-compared-form-framer-origami-pixate-proto-io-c2acc9062c61 Original app: http://appstore.com/IFbyIFTTT

This is an expand/collapse menu example that can be created using container states.

Here's the previous version of Carousel's on boarding sequence

This is an interactive dial pad, created with proto.io. Development & original idea: https://spaces.proto.io/akisioannou Graphic design: George Prentzas

This is an onboarding tool I created for UBER drivers. An UBER driver's first ride can be a little nerve wracking (I know from personal experience). This tool walks the driver through a typical flow to prepare them for their first ride. It is more interactive than a video and will give them more confidence before hitting the road.