Privacy Policy
Jotsum is private by design. There is no account, no sign-in, no analytics, and no tracking. Your notes and calculations stay on your device.
What we collect
Nothing. Jotsum does not collect, store, or transmit any personal information. We have no servers that receive your data, no user accounts, and no way to identify you.
Your data stays on your device
Everything you type — your calculations, sheets, and folders — is saved locally on your own Mac, iPhone, iPad or Android phone, inside the app's private storage. It is never uploaded to us or anyone else. With Jotsum Pro, your sheets can additionally sync between your devices through your own iCloud account (Apple's iCloud Documents) — that data lives under your Apple ID with Apple, never with us, and we cannot read it. If you delete the app, that data goes with it. Use of standard system features like iCloud backup, or Android's own Google backup of the phone, is controlled entirely by you.
Network use
The only time Jotsum touches the network is to fetch live currency exchange rates, stock quotes and weather, from public providers: open.er-api.com (exchange rates), CoinGecko (crypto prices), Yahoo Finance (stock quotes) and Open-Meteo (weather). These are anonymous, read-only requests for public data. A stock or weather lookup includes only the ticker or place name you typed, sent straight from your device to that provider to get the answer; they contain no personal information and no identifier for you or your device, and none of it reaches us. Answers are cached so the app also works offline. If you never use currency, stock or weather lines, Jotsum still works fully offline. Purchases of Jotsum Pro are processed entirely by Apple's App Store; we receive no payment details. The Android app has no purchases.
Analytics & tracking
None. Jotsum contains no analytics SDKs, no advertising, no third-party trackers, and does not use the Advertising Identifier. We do not profile you and we do not share or sell data, because we never have any.
Children
Jotsum collects no data from anyone, including children, and contains no objectionable content. It is suitable for all ages.
Changes
If this policy ever changes, the updated version will be posted on this page with a new date below. Material changes will be reflected in the app's release notes.
Contact
Questions about privacy? Email [email protected].
Effective 28 June 2026 · Updated 18 September 2026 (Android app, weather, current rate providers).