Tags→#margin
Don't build your own invoicing
Vibe-coding invoicing to save time and transaction fees looks cheap until taxes, coupons, and a billing bug show up.
Make the world your 2nd market
Your neighboring country may look like the same thing, just twice the size. Instead: ship an global version, then follow traction instead of geography.
Stickiness matter
Seed-stage metrics that calm investors: revenue, churn, margins. Stickiness first, and only if you actually measure.