Founder stories
App that takes the stress and awkwardness out of sharing money with friends, roommates, and groups.
How Jon acquired customers
Tools used to build Splitwise
Jon Bittner pivoted from astrophysics to building Splitwise, now used by tens of millions worldwide.
Jonathan (Jon) Bittner was pursuing a PhD in astrophysics when he decided to build something that would help people with a universal problem: splitting expenses fairly.
Splitwise launched in February 2011, originally as "SplitTheRent" - a calculator to help roommates divide rent fairly based on room size and features.
In 2011, Jon was named to Forbes 30 Under 30 in the "Real Estate" category for his work co-founding Splitwise.
The team quickly realized that the expense splitting problem extended far beyond rent. They pivoted to general expense sharing among friends, roommates, couples, and travel groups.
Splitwise has been a labor of love for the founders for nearly four years. By 2014, users had shared over $1B in expenses just counting US dollars.
Splitwise is now used by tens of millions of people around the world to manage expenses for group trips, shared apartments, and daily IOUs. The freemium model allows free use with premium features for power users.
Start narrow (rent splitting) then expand to broader use cases
Word-of-mouth is powerful for social/utility apps - users invite friends naturally
Academic backgrounds can translate to product thinking
Freemium works well for social apps where network effects matter
Inspired by Jon's journey? Generate a business idea in the Finance space using AI and real founder data.
Jon achieved 2 milestones on the path to $1K MRR
$1,000
The journey, decisions, and context behind this milestone
See the complete breakdown: launch strategy, validation methods, startup costs, expert analysis, replication playbook, and more actionable insights.
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