Founder Playbook

Launching
since once could be used at parties at events at weddings I searched on Instagram # wedding # birthday party and crossplatform we had around 250 to 300 people listed out I wrote down a very simple cold message type of two to three sentences max that could grab their attention... amongst the 250 people we got around 15 people who reached back and we got around 12 events fixed for that single month

Cold-DM 250 hashtag prospects to land your first 10-12 customers

After you exhaust your personal network, search hashtags where your users already self-identify (#wedding, #birthdayparty). Build a list of 250-300 cross-platform prospects (Instagram + X + LinkedIn), write one 2-3 sentence cold message, and send it personally. Expect ~5-6% reply rate; convert about 4-5% of the original list into actual customers. For Once that math produced 12 booked events from the first month alone.


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Brian Shin
OnceBuilt Once (disposable-camera-style event photo app) with his girlfriend co-founder — bootstrapped to $20-22K MRR in 83 days post-launch with ~10-12K weekly active users and 700+ events booked by month 3.
Starter Story
I Built a $20K/Month App in 83 Days· 7:25
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