Have a question, found a bug, or want a feature? Reach out — we read every message.
Open any Premium feature and tap Upgrade, or go to Settings. Premium is an auto-renewing subscription billed through your app store. You can cancel any time in your store account settings.
Open Settings and tap "Restore purchases". Make sure you're signed in to the same app-store account you purchased with. If it still doesn't appear, email us.
Yes. QRTamm works fully on your device — your codes, library and settings never leave your phone. We run no servers and collect no personal data. See our Privacy Policy.
When you export a PNG, SVG or PDF, you choose where to save or share it (Files, Downloads, or another app). The file is created on your device.
QRTamm encodes the number you enter into a scannable barcode. It does not issue official product numbers — to sell in stores you need a GS1-registered number (gs1.org), which you then enter into the app.
Always test a code before printing. Keep enough quiet space (margin) around it, use good contrast, and avoid shrinking it too small. For codes with a logo, increase the contrast/error-correction in the app.
Tap Contact support above and send a short description (and a screenshot if it's a bug). We typically reply within 2–3 business days.