Privacy Policy

Last updated: July 26, 2026

QuarterZen is built to collect as little as possible. This page explains exactly what we do and don't do with your data.

Information We Collect

The income figures you enter each quarter, and your filing status and state selection. That's it.

Where Your Data Lives

All the data you enter — income figures, quarterly estimates, payment history, filing status, and state selection — is stored exclusively on your device, using local device storage. Nothing you enter is transmitted to or stored on any server we operate.

Information We Never Collect

QuarterZen never asks for or stores bank account credentials, banking information, Social Security numbers, or any bank-linked data. We don't connect to your financial accounts.

Third-Party Sharing

We do not sell your information. The only third party involved is RevenueCat, which manages subscription purchases and validates receipts from the Apple App Store or Google Play Store when you subscribe or restore a purchase. RevenueCat receives your purchase receipt and an anonymous identifier — it never receives the income figures, tax estimates, or any financial information you enter into the app.

Your Rights

You can request deletion of your data at any time by contacting us below.

Children's Privacy

QuarterZen is not directed at children under 13 and we do not knowingly collect data from children.

Changes to This Policy

We'll update this page if our practices change and update the date below.

Contact

Questions about this policy: bmoore@mustardseeddesign.co