Terms of purchase
Simple terms for HydraSolver licenses and HDS Shop files. This is not legal advice — it is what you are buying and how renewals work.
HydraSolver license
A license runs for one year. Single is $899 and carries one activation; Dual is $1,299 and carries two. A Single can be upgraded to Dual mid-term for $400; the upgrade adds the second activation and does not change the renewal date. Both are the same software: every supported game and every update released during that year is included, and the only difference is how many machines may run it at once.
You can try the full version of HydraSolver, unrestricted, for 10 days — just $150. The trial carries one activation and can be upgraded for the difference at any time: $749 to Single or $1,149 to Dual. A trial bought at $50 upgrades for $849 and $1,249. The upgrade keeps your license id and adds the rest of the trial to the year. A trial needs HydraSolver 1.1.87 or later.
- The app checks the license with our server in the background while it can reach it. Without a successful check, an activation lasts up to a week, or about 48 hours of the app running, whichever comes first; a new activation lasts two days. After that, new solves wait for a check. A solve already running keeps going, and saved solves keep opening.
- When the year or the trial ends, the app goes read-only: you can still open, browse, train and export existing solves. You cannot start a new solve until you renew.
- Renewing adds one year to whatever time is left — buying early does not waste days.
- Renew is a separate checkout for an existing license id. It is not a second full license.
- You can release an activation from Settings → License & Downloads when you change machines: three releases per 30 days on a Single, four on a Dual. Seats idle for 120 days free themselves.
HDS Shop
You buy files, not a subscription. Purchased .hds solves
are watermarked to your order and yours to keep. They open in
HydraSolver on a machine with an activated license — including a
lapsed one: expiry stops new solves, never your files. Download
links last 48 hours; re-open your receipt page to fetch again.
Payments
Card payments go through Stripe. Bitcoin is on-chain at the rate fixed when the order is created. Once a Bitcoin payment is sent, it cannot be cancelled.
Server rental
Optional quotes only — nothing is reserved or charged until you accept a price in writing.