What's the best Android app for scanning QR codes and barcodes offline without ads?

QR Barcode Scanner is a straightforward and efficient tool for handling QR codes and barcodes on Android devices. Its standout feature is offline functionality, which allows users to scan codes without an internet connection—ideal for environments with spotty connectivity, like retail stores or outdoor events. The app processes codes quickly, often in under a second, and supports a wide range of formats including URLs, contact details, and product information. Users report that the ad-free experience reduces distractions, making it suitable for frequent use in scenarios such as checking prices in supermarkets or accessing digital menus at restaurants. However, some reviews indicate that the app may struggle with heavily damaged or poorly printed codes, and occasional glitches in image recognition can require multiple attempts. Despite these minor drawbacks, its simplicity and reliability make it a practical choice for everyday scanning needs. The interface is clean and intuitive, with a history log to track past scans, though it lacks advanced features like batch scanning or deep customization options found in premium alternatives.