Privacy Policy

Overview

QR Craft (“App”) is published by Epsilon Developers, an independent software publishing brand operated by Satyam Kushwaha & Anurag Mahajan (“Developer,” “we,” “us,” or “our”).

This Privacy Policy explains how information is collected, used, stored, processed, disclosed, and protected when you use the App. By downloading, installing, accessing, or using the App, you acknowledge that you have read, understood, and agreed to this Privacy Policy.

1Data We Collect

QR Craft is designed as a local-first tool. Most data never leaves your device.

2Local Storage & Security

The App stores all user-generated data locally on your device using Android local storage technologies including SQLite databases and SharedPreferences. All data remains under your control inside the App’s private sandbox directory, which is not accessible to other apps.

Data Deletion

You may delete locally stored information by using Settings → Clear History within the App, or by uninstalling the App. Uninstalling removes all App data as required by Android’s app sandbox model.

3How We Use Information

• QR Scanner: Camera frames are processed in real time on-device to detect QR codes and barcodes. No camera images or video are stored or transmitted.
• Gallery Scan: When you select an image from your gallery, it is analyzed on-device for QR codes. The image is not stored or transmitted.
• Scan History: Successful scan results are saved locally so you can review past scans. Saved only on your device.
• QR Creator: QR codes are generated entirely on-device. The data you encode is not transmitted to any server.
• Batch Scan: Multiple QR codes scanned in a session are held in memory and displayed in the batch panel. They are saved to local history or exported as CSV — no server involved.
• CSV Export: Your history can be exported as a CSV file and shared via the Android share sheet. The file is created locally and shared only at your explicit request.
• URL Safety Check: When enabled and a URL QR code is scanned, the URL is submitted to the Google Safe Browsing API to check for phishing and malware. This can be disabled in Settings → URL Safety.
• Advertising: Google AdMob displays ads in the free version. This requires sharing your Android Advertising ID with Google.
• In-App Purchases: Subscription transactions are handled entirely by Google Play Billing. We receive only a subscription status flag and product ID.

4App Permissions

5Advertising

The free version of QR Craft displays advertisements provided by Google AdMob. No advertisements are shown to active Premium subscribers.

Google AdMob may collect and process information including:

• Android Advertising ID (AAID) — a resettable identifier for interest-based advertising
• Device model and Android version
• Approximate location (country/region — not precise GPS)
• App interaction events and advertising performance metrics
• IP address for ad delivery

Such information is governed by Google’s privacy policies. We do not control how Google AdMob processes the information it collects.

Opting Out of Personalised Ads

You may opt out of personalised advertising at any time by going to Settings → Google → Ads → Delete advertising ID on your Android device, or by upgrading to QR Craft Premium to remove all ads entirely.

6URL Safety Checking

When you scan a QR code that contains a URL and URL safety checking is enabled in Settings, QR Craft submits that URL to the Google Safe Browsing API to check whether it is associated with phishing, malware, or other threats.

You may disable URL safety checking at any time in Settings → URL Safety. When disabled, no URLs are sent to Google and the feature shows a “Safety unavailable” status.

7Third-Party Services

8In-App Purchases

QR Craft offers an optional Premium upgrade — a monthly subscription (with a 7-day free trial for eligible new users) or a one-time lifetime purchase — to remove ads and unlock premium features. All transactions are processed exclusively by Google Play Billing.

• We receive only the subscription status (active or inactive), the product ID, and a purchase token. We never see or store your payment card number, billing address, or bank details.
• Premium status is stored locally on your device and verified against Google Play on each app launch.
• For refund requests, contact Google Play support directly, as all billing is managed by Google.

9Data Retention

All information generated by the App remains locally stored on your device and is retained until:

• Deleted by you through in-App settings (e.g., clearing scan history);
• Deleted by uninstalling the App.

Server-side records, where applicable (e.g., aggregate crash diagnostics), are retained only as long as reasonably necessary for operational and security purposes.

10Legal Basis for Processing

Where the GDPR, UK GDPR, India’s Digital Personal Data Protection Act (DPDPA), or other applicable data protection laws apply, processing is carried out on the following bases:

• User Consent: For permissions you explicitly grant (camera, storage) and for advertising data processed by Google AdMob.
• Contractual Necessity: Processing required to deliver the App’s core features you have requested.
• Legitimate Interests: Processing to improve App performance, detect misuse, and maintain App security.
• Legal Obligations: Processing required to comply with applicable laws.

11Your Rights

Since virtually all QR Craft data lives locally on your device, you have direct control:

12Children’s Privacy

The App is not directed toward children under 13 years of age, or the minimum legal age required in your jurisdiction. We do not knowingly collect personal information from children. If we become aware that information has been collected from a child in violation of applicable law, we will take reasonable steps to delete such information. Contact us at contact@epsilondevelopers.xyz if you believe a child has used the App.

13International Data Transfers

Information may be processed in countries outside your country of residence, including by third-party service providers such as Google (AdMob, Play Billing, Safe Browsing). Where required by applicable law, appropriate safeguards will be implemented.

14Security

We implement commercially reasonable technical and organizational safeguards designed to protect information processed by the App. However, no method of electronic storage or transmission can guarantee absolute protection. Users remain responsible for maintaining the security of their own devices.

15Changes to This Policy

This Privacy Policy may be updated periodically. When we do, we will update the “Last updated” date at the top of this page and post a notice within the App for material changes. Continued use of the App after a policy update constitutes acceptance of the revised policy.

16Contact