Pricing Plans
Choose the plan that fits your learning goals. Upgrade or cancel anytime.
Free
$0
- Caesar Cipher level
- XOR Encryption level
- Basic achievements
- Progress tracking
Premium — One-Time Payment
$9.99 (card) · $19 (crypto/bank)
Lifetime access — pay once, keep forever
- Everything in Free
- Multiplayer cipher duels
- Story mode campaign
- Global leaderboards
- QKD and Network Defense levels
Ultimate — Monthly Subscription
$19.99/month (card) · $49 (crypto/bank)
Cancel anytime · 7-day free trial
- Everything in Premium
- BB84 Quantum Key Distribution level
- E91 Entanglement Protocol level
- Advanced quantum cipher sandbox
- Priority support
Payments processed securely via Lemon Squeezy (card) or CypherPay (crypto & bank transfer).
See our Refund Policy — 30-day money-back guarantee on card payments.