Frequently asked questions

Yes. All courses, exercises, challenges, leaderboard and badges are free. Premium adds unlimited simulations/exercises, file downloads and cosmetics.

No. Premium is a single 34.49€ purchase, no auto-renewal. Access is lifetime.

A timed exam (50 questions, 90 min) validating your VHDL/FPGA skills. 19.90€, delivered with a verifiable PDF and unique code. Independent from Premium.

Each exercise has a testbench. Your code is compiled and run with GHDL on our servers. Testbench assertions decide success. No tool to install.

Yes. Data is hosted in the EU (Hostinger, Lithuania). We only store your email, hashed password (bcrypt) and progress. No reselling, no third-party trackers. See the privacy policy.

Yes, any time from your account page. Deletion is immediate and irreversible.

All Visa, Mastercard and American Express cards via Stripe. Secure payment, no card data stored on our servers.

Yes, within 14 days of purchase, as long as Premium content has not been substantially used. Contact us via the contact page.

Yes. Volume pricing, learner progress tracking and custom modules. See the Enterprise page.