The short version: Dundue keeps your data on your device. There are no accounts, no analytics, no tracking, and no servers of ours. The only data that ever leaves your phone is what you send yourself — reminder emails through your own mail app, backups you export, and purchases processed by Apple.
What Dundue stores
Your clients, invoices, reminder history, and settings are stored in a local database on your device. We cannot see, access, or recover this data — it never reaches us. Deleting the app deletes the data.
Reminder emails
Dundue drafts payment-reminder emails for you, but it never sends anything itself. When you tap Share or Open in Email, the draft is handed to the app you choose, and sending happens from your own email account under your control.
Purchases
Dundue offers a one-time upgrade purchased through Apple. Purchases are processed by Apple and validated by RevenueCat, our purchase-management provider, using an anonymous identifier and your App Store receipt. This does not include your name, email address, invoices, or any content from the app. See RevenueCat's privacy policy.
Backups
Backups are plain JSON files created on demand and handed to the iOS share sheet. Where they go — Files, iCloud Drive, AirDrop — is your choice, and they never pass through our hands.
Data we collect
None. Dundue contains no analytics SDKs, no advertising SDKs, and no crash reporters. We collect no personal information of any kind.
Changes
If this policy changes, the updated version will be posted at this page with a new effective date.
Support
For help using Dundue, see the support page, or email sspi.investments@gmail.com. We aim to reply within a few business days.
Effective July 25, 2026 · Dundue is developed by Simon Shih