Mark Jacobstein

Home ownership, reinvented

Celebrate team wins in Slack

Electric scooter rentals for $2 one-way to anywhere in SF

Doodle Anything and Send it on Facebook Messenger

Animated GIF memes for Facebook Messenger

A.I. recommending restaurants in SF in a chat interface

Name Your Price For Products

The best way to express what you really think (w/ GIFs)

The super-easy way to see news from your friends