You own 100% today. How does that change when I invest?
For SAFE notes (Track A): nothing changes immediately. A SAFE is a future-equity instrument; you do not become a shareholder until ChaiTalk does a priced round (typically the seed round), at which point your SAFE converts to actual shares at your agreed cap. So today the founder still owns 100% on paper; on conversion day, the cap table updates for everyone at once. For revenue share (Track B): zero equity changes hands, ever. The founder retains 100% ownership; you receive monthly cash payouts from revenue until your cap (2x-3x) is met.
How is profit actually shared on the revenue-share track?
Example with concrete numbers. You put in $10,000. We agree on 8% of monthly net revenue and a 2.5x cap ($25,000 total return). Month 1 we make $2,000 net; your payout is $160. Month 12 we make $30,000 net; your payout is $2,400. The share keeps paying every month until your cumulative payouts reach $25,000. After that, your interest ends and you keep everything you earned. No equity, no board seat, just a clean cash relationship.
What is the difference between a SAFE and a convertible note?
A SAFE is simpler: no interest rate, no maturity date, just a cap (and optionally a discount). A convertible note is debt: it accrues interest (typically 4-8%) and has a maturity date by which it must convert or be repaid. For first-time investors and small cheques, SAFE is the industry default because the legal cost is near-zero (YC publishes the template free) and the terms are well-understood.
What protects me against the founder going off the rails?
For SAFE: the cap table transparency clause means you see every issuance the moment it happens, the 4-year founder vesting means the founder cannot take their stock and walk, the investor letter cadence means you have ongoing visibility, and board observer rights at $50k+ give you a seat in strategy meetings without a vote. For revenue share: you are repaid from cash so you are not exposed to dilution. For donations and contributions: you are not exposed at all; that is the point of those tracks.
I want to contribute code but I am not in MENA. Does that matter?
No. We have Egyptian + Korean founders and the team is intentionally global. What matters is whether you ship and whether you understand that this is for a region, not from a region. We will say no to contributors who try to make the product look like the apps it is meant to replace.