Stackfone — Privacy Policy

• Wallet address — connected via Solana Mobile Wallet Adapter, used as your account identifier. One wallet = one node.
• Device type and country — self-reported at node creation, optional.
• Location — opt-in, off by default. Only sent when you turn on "Share my location". We store your most recent shared position, not a history of past locations. Other users only ever see a position rounded to roughly 100 meters, never your exact fix.
• Node activity — heartbeat timestamps, online status, uptime totals, referral relationships, card/battle/probe activity tied to your node.
• Session tokens — issued after a wallet-signature check, used to authorize actions on your node.

No email address, name, phone number, contacts, photos, or browsing history. No advertising SDK and no analytics SDK beyond what's disclosed below — we don't sell or share your data with advertisers.

• Google Play Services / Maps SDK — used to render the in-app map and to obtain a location fix when you opt in. Subject to Google's own privacy policy.
• Solana blockchain — your wallet address and any NFT mint transactions are recorded on a public blockchain by nature of how Solana works; this is outside our control once submitted.

Node and activity data is kept for as long as your node is active. To request deletion of your node's data, email founder@stackfone.com from a message you can verify controls the associated wallet.

Stackfone is not directed at children and we don't knowingly collect data from anyone under 13.

We'll update the "Last updated" date below if this policy changes materially.