Refer 5 sales. Get any course free.
Share your link. When a friend buys a course, you earn referral credits. Bank 5 credits (5 sales × 1 per sale) and redeem them for any course at Lifetime access — zero money. Like a coffee punch card, but for your brain.
Just share your link. No coupon codes to sell — anyone who buys within 30 days of clicking counts as your referral, on any plan (monthly, yearly, or lifetime). Their discount stays theirs; your credit banks automatically the moment their payment succeeds.
How it works
Four steps. No paperwork, no minimum payout queue.
1. Share your link
Joining gives you a personal link ending in a code like CSD-7F3K2Q. Send it to friends, post it, put it in your bio.
2. A friend buys a course
They pay the normal price (with their usual discount). Your code travels with the order — they owe you nothing extra.
3. You bank 1 credit
Each qualifying sale adds 1 credit to your balance. Refunded sales give the credit back to us.
4. Redeem at 5 credits
Spend the credits on any course we sell — unlocked as permanent Lifetime access, the same as if you paid.
What counts as a qualifying sale?
- The payment must fully succeed. Failed or cancelled checkouts count for nothing.
- Small test payments under the equivalent of a coffee (10 minor-currency units) don't qualify — no farming $1 purchases for credits.
- One credit per person you refer. If they upgrade later, that's still one referral.
- Refunds, chargebacks and quick cancellations take the credit back, honestly and automatically.
- Your own purchases never count — self-referrals are blocked at payment time.
The credit math, for a beginner
Credits are a simple counting unit — not money, not points you can cash out. The arithmetic is one line:
Refer 10 sales and you have enough for two courses — that's the whole idea: you help people find the course, we say thanks with the same thing they just bought.
The fine print, in plain words
Credits are not cash
One credit = 1/5 of a free course. They cannot be sold, transferred, exchanged for money, or refunded — they exist only to unlock course access.
One referral per person
Each friend counts once, no matter how many times they buy or upgrade. No stacking links on the same buyer.
No self-referrals
Buying through your own link (same account or same email) credits nothing — we check both identities at payment time.
Refunds take credits back
If a friend is refunded or disputes a charge, the credit is reversed automatically. Your balance never goes below zero.
Full rules live in our Terms of Service. Questions? Email contact@completesystemdesign.dev.
5 sales. 1 free course. Zero hype.
Recommend something you already use — that is the entire job.