Privacy & Terms

Plain English, one page. Last updated 2026-09-13.

Privacy

The short version: your trading stays on your machine. We hold only what billing requires.

On your machine

• The Casu app runs entirely on your computer. Your exchange API key, your positions, your trade history and your settings live in local files on your machine and are never sent to us.
• The app talks directly to your exchange (and to public price feeds) from your machine. The exchange’s own privacy policy governs what it sees, exactly as if you traded on its website.

What we keep

• Billing: purchases are sold and processed by Stripe, which is the seller of record for your subscription, so Stripe’s consumer terms and privacy policy apply to the purchase itself. Payment details (card number, billing address) go to Stripe, not to us. We keep your email address, your license key and your subscription status, and we use the email to send your license and service notices.
• Who holds it: your email, license key and subscription status live with our hosting provider in the United States, and your license email is delivered by our email provider. Stripe keeps the billing record. We share data with no one else, and we never sell it.
• Security and retention: every connection to the license service is encrypted (HTTPS), license records are reachable only through that service, and the keys that control it are held as secrets, not in code. We keep your record while your subscription is active. Email support@casu.io to have it deleted, or to ask what we hold about you.

What the app sends

If you have added a license key, the app confirms it with our license service when it starts and about once a day. That check carries your key and the app version: nothing about your trading, balances or positions, and nothing that identifies the machine. Without a key, in free mock, the app sends no license check at all.

Once a day the app also fetches a small file from our download server to learn whether a newer version exists; that request carries nothing about you. Like every web request, these checks show our host an IP address; we do not use it for anything.

This website

This site keeps cookieless, anonymous page counts and nothing else. No tracking pixels, no ad-tech, nothing to consent to. If you email support@casu.io, we see your email. That’s the complete list.

Terms of use

By downloading or using Casu you agree to the following:

The risk

1. Not financial advice. Casu is trading software: order entry, automated exits you configure yourself, and historical statistics. Nothing it displays, and nothing on this site, is a recommendation to buy or sell anything. We are not a broker, dealer, investment adviser, futures commission merchant, or commodity trading advisor, and we are not registered with the SEC or the CFTC.
2. Trading risk is yours. Event contracts can lose their entire value quickly. Stop-losses reduce risk but cannot guarantee an exit price: a stop-loss executes as a market order and can fill below your level in a fast or gapping market, and in a very thin market there may be no bid to sell into at all. An automated exit can also miss for reasons outside the software: the engine process not running, your machine asleep or off its network, an exchange outage, rate limit or API change, or a software defect. Automation removes the work of watching a position. It does not remove the risk of holding one, and you stay responsible for the automation you switch on and for keeping direct access to your exchange account so you can manage positions if Casu is unavailable.

Your account

3. Who can use Casu. You must be at least 18 and legally able to hold an account on your exchange. Casu is not for anyone under 18.
4. Your account, your rules. You trade on your own exchange account and are responsible for complying with your exchange’s terms and the laws that apply to you. Casu is independent software and is not affiliated with, endorsed by, or operated by any exchange.

Your subscription

5. Subscription. Mock mode is free. Paper and live trading are a paid monthly subscription billed through Stripe. It renews automatically at the end of each monthly period, and the charge repeats until you cancel. You can cancel anytime in the customer portal, linked in your purchase email and in this site’s footer, in no more steps than it took to subscribe. Canceling stops future charges; your license keeps working through the end of the period you’ve paid for. Price or plan changes are announced in advance and never applied silently.
6. Refunds. Stripe, as the seller of record, issues any refund. Charges already made are generally not refunded, but if something went wrong (a double charge, a purchase that never activated), email support@casu.io and we’ll make it right. Nothing here limits refund rights the law gives you where you live.
7. License. One license key unlocks paper and live on any number of your own machines, for your personal use. You may not resell Casu, offer it as a hosted service to others, or use it to trade on someone else’s behalf.
8. Your key is yours alone. Don’t share your key with anyone else. A key that is shared, sold, or used to sell access to Casu is not covered by your subscription, and may be suspended without a refund of the current period. If that ever happens to you by mistake, email support@casu.io and we will sort it out. We may also suspend service for abuse aimed at Casu itself, such as attacks on the license service or payment fraud. Either way the same floor holds: suspension only stops new orders, it never prevents you from closing a position, and it never disarms a stop-loss.

The software

9. Software provided “as is.” Casu is provided without warranty of any kind, express or implied, including any implied warranty of merchantability, fitness for a particular purpose, or non-infringement. To the maximum extent permitted by law, we are not liable for trading losses, for lost profits, or for indirect, incidental, special, consequential or punitive damages arising from your use of the software, including bugs, downtime, missed exits or data errors. Where liability cannot be excluded, our total liability for any claim is limited to what you paid for Casu in the twelve months before the claim arose.
10. Ownership. Casu, its software, its name and everything on this site belong to us and are protected by copyright and trademark law. Your subscription is a license to use Casu, not a transfer of ownership: you may not copy, redistribute, rent, resell or create derivative works from it, or attempt to derive its source, except where the law gives you that right regardless of what this agreement says.

The fine print

11. Changes to these terms. These terms can change. When they change materially, the date at the top moves and the app shows the new version and asks you to accept it before you continue. If you don’t agree, cancel your subscription; your license keeps working through the period you’ve paid for.
12. Governing law and disputes. These terms, and any dispute about Casu, are governed by the laws of the State of California, without regard to its conflict-of-laws rules. Before filing any claim, you agree to email support@casu.io describing the problem and give us 60 days to resolve it; most things on this page are fixable in one reply. Any claim not resolved that way must be brought in the state or federal courts located in California, and both sides consent to those courts, except that either side may use small claims court where its rules allow.
13. If part of this fails. If any part of these terms turns out to be unenforceable, it is narrowed only as far as needed to make it enforceable, and the rest stays in force. Nothing here removes a consumer right that the law where you live gives you regardless of an agreement.

Questions about any of this: support@casu.io.