Pricing
Start free. Upgrade when you want every module and the full kata library.
Free
$0 forever
- TCP Connection Lifecycle simulator
- BGP Session Lifecycle simulator
- First 2 katas per module
- Diagnostic assessment
- All additional modules
- Full kata library
- Progress dashboard
Pro
$99 / year
Per engineer, billed annually
- Everything in Free
- Full kata library — every TCP + BGP kata
- Progress dashboard + weak-area analysis
- Every new module the day it ships
On the roadmap: BGP Best Path · OSPF · NAT · IPSec · PKI — shipping quarterly. See the catalog →
Team pricing: $199/yr per seat. [email protected]
What you're paying for isn't videos. Every simulated behavior is validated against the real open-source source — the Linux kernel, FRR, BoringSSL — and a server-side correlation engine computes how one layer's state cascades into the next. You're buying a kernel-accurate mental model you can debug from.
Questions
- Refunds?
- 14 days, no questions asked — email [email protected] and we refund in full.
- Invoices & tax?
- Checkout is handled by Lemon Squeezy (our merchant of record), so VAT/sales tax is calculated for you and you get a proper invoice.
- What do future modules mean?
- TCP and BGP are live now. Your subscription includes every new module — OSPF, NAT, IPSec, PKI and more — the day it ships, at no extra cost.