Privacy Policy · Effective July 8, 2026
Casberi is built so your data lives on your iPhone, not on our servers — because we don't run any. This page explains, plainly, what that means.
Everything you capture or connect — notes, links, screenshots, events, chats, voice notes, and the things your connected apps bring in — is stored on your device, in Casberi's own local database. Casberi has no backend: your corpus is never uploaded to us, because there is no "us" server to upload it to.
If you turn on iCloud sync, your things are mirrored through your own private iCloud account using Apple's CloudKit, so they can appear on your other devices. This is Apple's infrastructure, tied to your Apple ID — only you can read it, and Casberi never sees it. Sync is off until you choose to enable it, and turning it off (or using Delete things) removes the iCloud copy.
When you connect a service — a feed, a social handle, a token, a calendar — Casberi talks to that service directly from your iPhone to fetch your data. Nothing routes through a Casberi server.
On iPhones that support Apple Intelligence, Casberi's answers are written by Apple's on-device model, from your things, on your device. By default, your data is not sent to Casberi, to Apple's servers, or to any third party to generate them. The text inside your screenshots is read the same way — by Apple's Vision framework, on your device.
If you add your own AI key in Settings — Anthropic (Claude), OpenAI (ChatGPT), Google (Gemini), Venice, Bankr, OpenRouter, or xAI (Grok) — every answer gains a "Try with your key" button. Only when you tap it, your question and the few matched things are sent from your iPhone directly to that provider to write a stronger answer — never through a Casberi server, and never on their own. Answers written this way say so, right on the answer. The key lives in your iPhone's Keychain, goes only to the provider you chose, and that provider bills you directly under its own privacy policy. Remove the key and the button disappears.
When you watch a token, Casberi fetches its public price data from public market APIs (such as GeckoTerminal, Alchemy, and Dexscreener) to draw the chart. These requests carry only the token you're viewing — nothing about you or your identity.
Because there's no server to hide anything behind, you can read the whole list. Settings › Privacy shows every service Casberi talks to — straight from your iPhone — and exactly what each request carries: which apps are reaching out right now, which reach nothing until you connect them, and the agent key that reaches out only when you tap "Try with your key." And if you turn on iCloud sync, Casberi points you at Apple's Advanced Data Protection, which makes that copy end-to-end encrypted — readable only by your own devices, not even Apple.
While Casberi is distributed through Apple's TestFlight, Apple may collect standard beta diagnostics — crash reports and basic usage metrics — under Apple's privacy policy, to help improve the app. This is Apple's collection, not Casberi's, and you can disable sharing in the TestFlight app.
Casberi is not directed at children under 13 and does not knowingly collect information from them. (It doesn't knowingly collect information from anyone — see above.)
If this policy changes, the new version will be posted here with an updated effective date.
Questions about privacy? Email privacy@casberi.app.
Casberi is a personal, on-device app. The short version of everything above: your things are on your phone, and they stay there unless you decide otherwise.