← CASI

Privacy

Last updated: October 11, 2026

CASI (“we”, “us”) is a personal finance app by Ziteox. This policy covers the iOS app and casi.ziteox.com. We do not sell your personal information.

Money data on your iPhone

Transactions, wallets, budgets, people you lend to or borrow from, categories, and related notes are stored on your device. They stay on that iPhone unless you export them or turn on Cloud Backup.

You can export transaction logs as CSV from the app. CSV covers logs only (date, note, amount, category, type). Budgets, Obligations, wallets, assets, and profile are not included. Erase data removes the local ledger on that iPhone.

Account (optional)

Signing in is optional. If you choose Sign in with Apple or Google, we store an account identifier and, when the provider shares it, your name and email. That account is hosted by our authentication provider (Supabase) so you can reconnect the same identity later. We also send that account identifier to RevenueCat so Casi Pro stays attached to the same person if you restore purchases.

Display name is saved on the cloud profile so it comes back when you sign in again. Profile photos stay on this iPhone. Usernames for finding other people are not part of this release.

Signing out disconnects the account. It does not delete the money data already on the iPhone.

You can delete the account from the app. Deletion is scheduled for 7 days. Until that date you can sign back in and stop it. Apple and Google stay linked until the account is permanently deleted. Deleting the account does not cancel an App Store subscription.

By default, only the account is deleted. Logs stay on the iPhone. If you turn on “Delete the Casi logs on this iPhone,” the logs, wallets, and profile picture on that iPhone are deleted as well.

Cloud Backup

Cloud Backup is part of Casi Pro. It is off until you sign in and turn it on. While it is on, we store a copy of the ledger with your account (logs, wallets, budgets, people, categories, and related notes) so it can come back on a signed-in iPhone. That copy is linked to your account and is used only to provide backup. Profile photos stay on the iPhone.

Purchases

Casi Pro is sold through the App Store. Apple processes payment. We use RevenueCat to confirm whether your Apple ID has an active Pro subscription or lifetime unlock so the app can turn on paid features. We do not receive your full card number.

Permissions

The app may ask for:

  • Face ID or device passcode, only if you turn on app lock.
  • Photos, if you pick a profile photo. That photo stays on this iPhone.
  • Notifications, if you enable a daily reminder to log spending, or loan settle reminders.
  • Contacts. The system contact picker can fill a person’s name for Obligations. We do not upload your address book.

Widgets

Home Screen widgets read a local snapshot of budget and spending figures through an App Group on the same iPhone. That snapshot does not leave the device.

What we do not collect

We do not run advertising trackers in the app. We do not sell your ledger to data brokers. Voice entry, receipt scanning, and usernames for finding other people are not part of this release.

Pre-launch email list

Before launch, some people shared an email and platform preference (Apple or Android) on this site. We used that to send launch updates and to understand demand.

Those emails are stored in our database. We used Resend to send confirmation and launch messages. New signups are no longer collected on this site.

Cookies and analytics

This marketing site does not use advertising cookies or sell your data to advertisers.

We use a privacy-friendly analytics tool (Umami, hosted at analytics.ziteox.com) to understand basic site traffic, such as page views and referrers. It is configured to avoid advertising trackers and does not require a cookie banner for ads profiling.

Our hosting provider may also keep standard technical logs (for example IP address, browser type, and request time) needed to run and secure the site.

Feedback

If you send feedback from the app, we store the message, an optional reply email, app version, device and iOS version, and your account identifier if you are signed in. That is only to reply and fix issues. It is not used for advertising.

Your choices

You can ask us to delete a pre-launch email by writing to us. In the app you can sign out, schedule account deletion, erase local data, and manage or cancel subscriptions in iOS Settings → Apple ID → Subscriptions.

Contact

Questions, access, or deletion requests: