Legal
Last updated: May 12, 2026
ZW Studio LLC ("we," "us," or "our") respects your privacy. This Privacy Policy explains how our mobile apps handle information, including current products such as Coastful, IDFrame, and Myredient.
Our apps do not collect, transmit, or store any personal information on external servers. Specifically, we do not collect:
Coastful is a FIRE (Financial Independence, Retire Early) calculator and personal net worth tracker. Financial records (assets, liabilities, mortgages, snapshots), FIRE assumptions, goals, and settings entered in the app are stored on the user's device. Coastful does not require users to create an account before using core functionality. The app does not connect to bank accounts, brokerages, or any financial data provider — users enter and update their own asset values. Optional biometric authentication (Face ID, Touch ID, or Android biometric prompt) can be enabled to gate access to the app on each launch; the authentication is handled entirely by the underlying platform and no biometric data is received by Coastful.
Coastful Pro unlocks advanced FIRE planning features (custom return assumptions, Coast FIRE, and what-if scenarios). It is sold as an auto-renewing monthly subscription and a one-time lifetime purchase. Purchases and subscriptions are processed entirely by the platform store (Apple's App Store or Google Play); ZW Studio LLC does not receive your payment card details. The "Restore Purchases" action queries your platform store account to verify previous purchases; no store-account details are retained by us.
Coastful supports exporting and importing your own financial data as local files. These files are not encrypted by Coastful. Exports never leave your device unless you choose to share, save, or transfer the file through platform-provided services or your own storage. Imports are validated and processed on-device only.
IDFrame is a passport photo utility app. It requests access to the camera and photo library only so users can capture, import, and save passport photos. Image processing — including face detection, positioning, background removal, and print-sheet generation — runs entirely on-device. No photos or processing data are sent to our servers.
Myredient is an ingredient intelligence app. It uses the camera to scan barcodes and photograph ingredient labels. Image capture and ingredient analysis run on-device. When a barcode scan is performed, the app may query a public food database (such as the USDA or Open Food Facts) using only the product barcode number — no personal information is sent. Dietary preferences and scan history are stored locally on the user's device.
Data created or used in our apps is generally stored locally on your device using standard mobile app storage and photo library access patterns. Data leaves your device only when you explicitly export, back up, or share it through platform-provided services or your own device settings.
If an app offers optional biometric protection such as Face ID or Touch ID, authentication is handled by the underlying platform frameworks. We do not receive, store, or transmit biometric data.
We do not use our apps to operate advertising networks or data broker integrations. App distribution, payments, backups, and device-level services are provided by the platform store — Apple's App Store on iOS, or Google Play on Android — and are governed by Apple's or Google's own terms and privacy policies.
If an app offers in-app purchases or tips, payment processing is handled by the platform store — Apple's App Store on iOS, or Google Play on Android. ZW Studio LLC does not collect or store payment card details. When you tap "Restore Purchases," the app queries your store account to confirm previous purchases. We do not receive or retain your store account details.
Our apps are not directed to children under 13, and we do not knowingly collect personal information from children.
Because our apps do not collect personal data, there is nothing for us to disclose, delete, or stop selling under the California Consumer Privacy Act (CCPA), the EU General Data Protection Regulation (GDPR), or similar privacy laws. If you have questions about a specific request, contact us at the email below.
We may update this Privacy Policy from time to time. When we do, we will revise the "Last updated" date on this page.
If you have questions about this Privacy Policy, please contact us at:
ZW Studio LLC
Email: privacy@zwstudiollc.com