Turn the courses you paid real money for into knowledge you can actually prove you have.
Most course knowledge fades within weeks. PKL keeps what you paid for — cited, tested, and still yours to explain six months later.
- Cited, not guessed
- Cancel anytime, keep what you paid for
- Private to your account
Sound familiar?
The problem PKL exists to fix.
You finish, then forget
Most course knowledge fades within weeks — nothing forces it to stick.
The certificate proves nothing
Six months later, you couldn't defend what you learned if someone asked.
Courses contradict each other
Two sources disagree, and you never actually resolved which one to trust.
You don't know if it was worth it
No way to tell whether that $2,000 program actually paid off.
How it works
Every concept goes through the same pipeline before it counts as "learned."
Ingest
Upload a course — PDF, slides, a photo of your notes, or paste text directly.
Synthesize & cite
Concepts are extracted with citations back to the exact source.
Query & debate
Ask cited questions; conflicting courses are put in debate, not averaged away.
Teach-back & audit
Spaced-repetition recall and governance checks keep the vault honest over time.
See it in action
Illustrative example — this is the shape of what comes out, not a real customer's vault.
You paste this...
"...CAC is basically what you spend, fully loaded, to land one paying customer. A lot of founders undercount it — they forget to include the salaries of the people running the campaigns, not just the ad spend itself..."
...and get this back
Customer Acquisition Cost (CAC)
The fully-loaded cost to acquire one paying customer — ad spend plus the salaries of everyone running the campaign, not just media cost alone.
Cited: "...forget to include the salaries..." — Lecture 3, 14:22
When two courses disagree
Tension surfaced, not averaged away: the two courses assume different lead temperatures — Course A is for warm inbound, Course B for cold outbound. PKL flags the conflict and names which context each answer applies to, instead of quietly picking one.
What's in the vault
Cited Q&A
Ask your vault anything — every answer traces back to a source.
Teach-back
Explain concepts back on a spaced-repetition schedule, with a day streak so retention isn't just a promise — it's a number you watch grow.
Benchmark
Compare how different courses cover the same topic, side by side.
ROI digest
A running read on which courses paid off and which concepts have gone stale.
Pricing
Full access
$14.99 USD / month
A fraction of what one certification, mastermind, or bootcamp costs. One subscription covers every course you ingest — spaced-repetition teach-back means you never just pay for a course and let it go dormant.
Get started monthlyor $149 USD/year — 2 months free
Secure checkout via Stripe. Cancel anytime.
Questions
Is this for every course I've ever taken?
It's built for the courses, certifications, and programs you paid real money for and will actually come back to — not a one-off $20 tutorial you'll never revisit. If that's most of what you buy, PKL will feel like overkill.
Is my course content private?
Yes. Every concept, citation, and query is scoped to your account only — nothing you ingest is visible to anyone else.
What if two courses I ingest disagree with each other?
PKL surfaces the disagreement through debate instead of quietly picking one side — you see the conflict and decide what to trust.
Do I have to review everything I ingest right away?
No. Spaced repetition surfaces what's actually due for review, so nothing sits on you as a backlog.
What happens to my access if I cancel?
You keep full access through the billing period you already paid for — cancelling doesn't cut you off immediately.