Terms of service

The service

Viper GTO provides post-session review, strategy solving and training for No-Limit Hold’em. Solving runs on your device; accounts, saved hands and the AI coach run on our servers.

Who may use it

You must be at least 18 years old to use Viper GTO, or older where the law where you live sets a higher minimum age for poker-related services. Using the service confirms that you meet that requirement.

Viper GTO is study software. It offers no real-money gambling, accepts no wagers and pays out nothing. Whether you may play poker for money is decided by the law where you are, and that is yours to check.

No real-time assistance

This product is for post-session review and off-table training only. Using it to inform decisions in a hand you are currently playing (RTA) is prohibited. Nearly every poker site bans it, and any account closure or loss of funds that follows is yours alone.

Accounts

You are responsible for keeping your credentials secret and for what happens under your account. Tell us immediately if you suspect unauthorised use.

We may suspend or close accounts that breach these terms, abuse the service, or work around plan limits.

Subscriptions and refunds

Paid plans are monthly or annual subscriptions that renew automatically. A subscription bought on the web can be cancelled any time through the Stripe customer portal in Settings → Plan; cancellation takes effect at the end of the current billing period.

A subscription bought in the iOS or Android app is billed, renewed, cancelled and refunded through your App Store or Google Play account. Manage or cancel it in your Apple or Google account, not in the Stripe portal.

For a subscription bought on the web, if a defect on our side leaves the service unusable for you, contact us and we will handle the refund case by case.

Disclaimer

Solver output is a numerical approximation with non-zero exploitability. It is a study tool, not a guarantee of results. Poker involves risk, and your betting decisions are entirely your own.

The service is provided “as is”. To the extent permitted by law we are not liable for indirect or consequential loss arising from its use.

Engine and components

The Viper GTO engine is not currently distributed as open source. Third-party components retain their respective licences.

Changes

If these terms change materially we update the date at the top of this page and, where it matters, tell you by email. Continued use means you accept the revised terms.