14-Day Idea Journal
Write down one problem you notice each day and a possible startup idea to solve it. Check in once a day.
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Business · Facts & stats · iChallenge network
Daily facts and stats about startups, founders and building new companies, plus real challenges to put them to work.
Who wrote The Lean Startup?
You went

One ranked attempt per day. Practice as much as you like.
Join one, log your days or post your proof. Finishing earns XP and the Finisher badge.
Write down one problem you notice each day and a possible startup idea to solve it. Check in once a day.
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Fill out a one-page lean canvas for an idea: problem, customer, solution and channels. Post your write-up.
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Ask three friends or family members about a problem your idea solves and note what you learn. Post a short write-up.
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Live counts from StartupChallenge.com. All arena stats →
Earned on any arena, shown on your profile everywhere.
Add your email to keep your level, streak and badges if you switch devices, and carry them to every iChallenge arena. One email when you save; no spam.
Fund a prize on StartupChallenge.com and your brand sits on the challenge card, the leaderboard and every finisher's share. Prizes only appear once they're funded, so players can trust what they see.
Founders, operators and students proving execution speed in public.
Rank, badges and league promotions. Some challenges carry a sponsor-funded prize, stated on the card.
Everyone on this arena gets the same five questions each day, from easy to hard. You get one ranked attempt; practice rounds are unlimited.
100 points per correct answer, up to 50 more for answering quickly, a combo multiplier for answers in a row, and 150 bonus points for a perfect round.
Yes. Playing, streaks, badges and leaderboards are free. Some challenges carry a sponsor-funded prize; the challenge card shows it when one is funded.