Web PKI is an Android application developed by Lacuna Software that allows users to perform digital signatures using their mobile phone's certificates on compatible websites or applications. This free program falls under the Business & Productivity category.

With Web PKI, users can easily sign documents and authenticate transactions without the need for additional hardware or software. The app's user-friendly interface makes it easy to navigate and use, even for those who are not tech-savvy. The program's compatibility with various websites and applications further adds to its convenience and practicality.

Overall, Web PKI is a reliable and efficient digital signature solution for Android users. Its compatibility, ease of use, and free license make it a top choice for those in need of secure and convenient digital signature services.