One Big Thing

Last updated: June 2026

🔒 One Big Thing does not collect, store, or share any personal data. Everything you enter stays on your device — always.

Overview

One Big Thing ("the app") is a personal productivity app developed by Sam Zavatchii. This Privacy Policy explains how the app handles your information.

The short version: we collect nothing. There are no accounts, no servers, no analytics, and no third-party services involved.

Data We Do Not Collect

We do not collect or have access to any of the following:

Your name, email address, or any personal identifiers
Your tasks, goals, or any content you enter into the app
Your location
Your photos, camera, or microphone
Your contacts
Device identifiers or advertising IDs
Usage analytics or behavior data
Crash reports or diagnostic data sent to us

Data Stored on Your Device

The app stores the following information locally on your device only, using iOS's built-in storage (UserDefaults). This data never leaves your device and is never transmitted anywhere:

The tasks and goals you create
Your reminder time preference
Whether you have completed onboarding

This data is deleted if you delete the app from your device.

Notifications

If you choose to enable daily reminders, the app will ask for permission to send local notifications. These notifications are scheduled entirely on your device — no push notification server is involved, and no data is sent anywhere. You can disable notifications at any time from iOS Settings.

Third-Party Services

One Big Thing uses no third-party SDKs, analytics tools, advertising networks, or external services of any kind. The app functions entirely offline.

Children's Privacy

The app does not collect any data from any users, including children. It is safe for all ages.

Changes to This Policy

If this policy changes in a future version of the app, we will update the date at the top of this page. We do not anticipate significant changes given the app's privacy-first design.

Contact

If you have any questions about this privacy policy, please contact us at:
Zullvo@outlook.com