About this app
This policy applies to 15 Min Markets, also listed as 15-Minute Markets: Crypto, provided by Haselrig Technologies LLC. The App is a practice simulator for five- and fifteen-minute crypto Up/Down rounds. It uses simulated funds only. There are no deposits, withdrawals, purchases, monetary prizes or redeemable balances. The App is not affiliated with Polymarket.
You can use the simulator without an email/password account. There are no sign-in or sign-out screens. You may optionally create a device-linked public leaderboard profile.
Version 1.0.0 build 11 is ad-free and has no third-party AI integration. Practice records stay on your device unless you join the leaderboard or choose to export them. Network requests to market-data and hosting providers are described below.
Information kept on your device
The App stores practice cash, simulated trades and orders, history, statistics, preferences and blocked-player choices locally. Optional round reminders are local notifications, subject to iOS permission. CSV and JSON export uses the iOS share sheet; information goes to the destination you select. Export does not automatically send it to us.
Optional public leaderboard
Joining is optional. Before joining, the App explains that your generated display alias, aggregate practice results, reset count and up to 30 latest completed calls will be public. The App creates a random player identifier and a device credential stored in Keychain to authenticate profile updates. Our server stores a hash of that credential. No email address, password or real name is requested. There is no cross-device sign-in or profile-recovery flow.
Public results include completed rounds, wins and losses, simulated amounts staked and profit or loss. Recent calls include asset, round duration, side, stake and result. New profiles share recent calls after you accept the joining disclosure. Turn off Share my calls in the leaderboard menu to remove detailed calls from public view after the update succeeds; your alias and aggregate results remain public. Profiles created before recent-call sharing was introduced do not share calls unless the player opts in.
New profiles use generated aliases such as Trader 1A2B3C4D. Custom-name entry is unavailable. Previously chosen display names may remain on existing profiles. The leaderboard is hosted by Railway. It contains no active AI trader. Resetting practice statistics updates the published results on the next successful synchronization and may increase the public reset count; it does not delete the profile.
Reports and blocking
Previously chosen names remain subject to community rules: abusive, hateful, sexual, impersonating or advertising names and names exposing contact information are not allowed. You can report a name from a player profile or contact support. Three distinct reports replace a name with a generated alias. No name is sent to an AI service.
For reports, the service stores the reported player's identifier, the reporter's player identifier or a one-way hash of their IP address if they have not joined, and the report time. Reports against a name are cleared when it is replaced. Deleting a profile removes reports by and against that profile. Reports against profiles removed for inactivity are also removed. Blocking is stored locally and is not sent to us.
Market data and service requests
The App requests public prices, order books and official outcomes from Polymarket, including Chainlink data delivered through Polymarket, and fallback price data from Coinbase. It does not send your practice history or leaderboard credential to those market-data services. Network providers receive an IP address and request information when contacted.
Our leaderboard service uses a temporary IP-address hash for request rate limiting and abuse prevention. Railway and other infrastructure providers may process operational request logs for service delivery, reliability and security. These requests are not used by us for advertising or cross-app tracking. The website privacy policy applies when you open our website or send a support request.
Advertising and earlier versions
Build 11 contains no advertisements, advertising SDKs, ad-consent forms, Google AdMob or Google User Messaging Platform integration. There is no advertising identifier access or remote switch to enable ads in this build. We do not sell personal information or share it for cross-app tracking.
Earlier builds included Google AdMob and UMP. Those builds could transmit device identifiers, IP address, approximate location, ad interactions and diagnostics to Google for advertising, measurement and fraud prevention, with consent controls where applicable. See Google's information about partner apps. The previous name-moderation service sent chosen display-name text to TypeSafe. That integration was removed with build 10. Removing these integrations does not itself erase information those providers already received. Update to build 11 to use the current ad-free, AI-free version.
How we use information
We use leaderboard identifiers, practice results and reports to operate the optional public leaderboard, authenticate updates, provide requested sharing and deletion, and prevent abuse. We use support information to respond to requests. Where GDPR or UK GDPR applies, our legitimate interests include operating and securing these optional services; applicable consent requirements apply to earlier-version advertising. You can choose not to join, turn off recent-call sharing, or delete the profile.
Retention and deletion
To delete your public profile, open the leaderboard menu, choose Delete my profile, then confirm Delete profile & stop sharing. The App stops sharing and requests removal of the public profile and associated server records. Offline requests retry when the App reconnects; keep the App installed until deletion is confirmed. Practice cash and history remain on the device. Uninstalling or clearing local data does not itself confirm server deletion.
Profiles with no successful results update for 90 days are removed during the next service request. Report retention is described above. Service providers may retain operational logs or backups under their own service and security practices. Contact us for help with deletion or questions about retained information.
Your privacy rights
Depending on your location and applicable law, you may request access, correction, deletion or a copy of personal information; restrict or object to processing; or withdraw applicable consent. GDPR and UK GDPR rights may include portability and a complaint to your local data-protection authority or the UK Information Commissioner's Office. Applicable U.S. state laws may provide rights concerning sale, sharing or targeted advertising. We do not sell personal information or share it for cross-app tracking. Submit requests using the contact details below.
Children
The App is not directed to children under 13. Follow the App Store age rating for availability and age suitability.
Contact us
For privacy questions, support or deletion assistance, use our privacy request form.
Haselrig Technologies LLC
United States