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Helmat the wheel since island one

Every sea, one cartridge

One price opens all ten seas at once, not one at a time. Three islands of free water, from wherever you land — and always will be.

$29once, per person · yours to keep

Buy the cartridge →Play ten cards first — no account

The demo is the same game: ten cards dealt from a real cartridge, graded the same way, with the answer on every miss. Nothing is saved and nothing is asked for.

Enterprise

agencies · contractors · larger teams

By invoice12-month term

quoted per order · twenty-five berths and up

A site license for the whole organization: bought on a purchase order, opened by a key, joined by email domain. Every berth runs the full Cert Cartridge.

Ask for a quote →

Available to US government buyers through SEWP V and OMNIA Partners contract vehicles, or direct by invoice.

for government teams: content, access, the training record, the paperwork →

  • · Every cartridge — CKAD, CKA, CKS, KCNA, KCSA, Data Engineer Professional, DevOps Engineer Professional, Security+ — plus the platform stack and the tender
  • · Domain-based access: everyone on your email domain is in, no invites
  • · Single sign-on to your identity provider (SAML or OIDC)
  • · The training record: a crew CSV and a per-person PDF for the training file
  • · Crew administration: assigned exam and date, who has gone seven days quiet, a Monday digest to the lead
  • · An accessibility conformance report and a data-handling summary, on request

Enterprise support

  • · A named contact, next-business-day response
  • · An onboarding session for the training officer, with the roster pre-created
  • · A quarterly readiness review against the crew's exam dates

You buy it once

$29 opens every exam sea, the platform stack and the tender, and that is the end of it — nothing renews, nothing lapses, and there is no per-sea price to add up. The cartridge also keeps growing: every card written after you buy is already yours, so the deck you own next year is larger than the one you paid for.

Setting a crew up

Start a crew on the crew page — it holds one berth until a plan is loaded. Buy that plan with the crew selected in the switcher, then invite people from the same page; berths fill as they accept, and a pending invite holds one.

The tender sails free

Fetch sails with you on every sea the cartridge opens. K9s has no exam, so it has no prep season, no readiness score and no countdown — just routes, par, and the strokes you took. That is a statement about its instruments, not about its price: the free taster is the demo.

things worth saying plainly

What is free, forever?
Three islands of free water, from wherever you land, and the demo. No card, no trial clock.
Is there anything to cancel?
Not for one berth — it is a single payment, not a subscription, so nothing renews and nothing lapses. Crew plans are billed monthly and can be canceled any time from Manage Account.
Is this the exam?
No. The exams are hands-on — this is the recall layer that makes your lab hours count. Every card is original, blueprint-weighted study content, never exam questions.
Do I buy one sea at a time?
No. There is no per-sea price: the cartridge has always opened all of them — the exam seas, the tender, and Operator Convoy, the platform stack.
Is there anything for the tools around Kubernetes, not just the exams?
Yes. Operator Convoy is a cartridge with no exam behind it: the supporting cast a hardened cluster is built from — network and mesh, policy and admission, identity, secrets and pki, observability, runtime security, supply chain and registry, stateful services and backup and delivery and provisioning — with a blueprint, coverage, the drill and task chains graded on a simulated cluster. It is part of the paid cartridge; the free water is the exams' first islands and the demo.