Scan QRcode dan Pencarian Buku is a free Android app developed by ariessoftware under the Utilities & Tools category. This app is designed to help individuals and organizations validate marriage certificates issued by the Office of Religious Affairs (KUA). The validation process can be done by scanning the QR code on the marriage certificate or the book itself. For older marriage certificates, users can input the corporate code found in the book.

This app also has the ability to read QR codes other than those found on marriage certificates by changing the settings in the "General Function" menu. With this app, users can easily validate their marriage certificates without the need to visit the KUA office.