Red Square Computing Co., Ltd.

Encrypt your text using picture as secret key.You do not need to type password. Just choose a picture as secret key.Protect your important email or SM …

• Fast and small prime factorizer• Max factorable number is 400,000,000,000. And it will be increased soon• When offline, max factoable number is 249, …

• Write down on your photos• Free if you like advertisements• Fully integrated with Windows Phone• Share your memos with your friends• CalligraphyUsin …