QuadRat: QR Scanner & Creator

QuadRat scans QR codes and barcodes in a moment and creates your own QR codes – fully offline. The app has no internet permission: what you scan and create never leaves your phone. 📷 Fast scanning • QR codes, Data Matrix, Aztec, PDF417 and barcodes (EAN, UPC, Code 128, Code 39) • Torch, zoom by pinch or slider, tap to focus • Scan from an image in your gallery • Several codes at once? Pick the one you want from a list 🔎 Clear results with one tap to act • Links: open, copy or share – with an offline safety check that warns about unencrypted links, shortened links, look-alike addresses and other tricks before you open them • Wi-Fi: see the network and password, connect with one tap or copy the password • Contacts (vCard, MeCard): add to your contacts with all details prefilled • Email, phone numbers, SMS, locations and calendar events • Product barcodes: search the web for the product • Nothing is opened, called or sent on its own – you always decide ✏️ Create your own QR codes • Website, Wi-Fi, contact, email, phone number or text • Live preview while you type • Colors: five presets or any custom color, separately for the code and its three corners • Shapes: square, rounded or dots • Optional logo in the center • Contrast and scan check: QuadRat reads every code back before you save it, so you know it works • Save as PNG or share it directly 🕘 History • Everything you scanned or created, grouped by day • Favorites and search • Open a created code again to change it • Turn the history off or clear it at any time 🔒 Private by design • No internet permission – the app cannot send anything anywhere • No ads, no analytics, no tracking, no account • History stays on your phone and is excluded from cloud backups • Codes with two-factor secrets (otpauth) are never stored 🌙 Light and dark theme, large touch targets, works on Android 9 and newer.