EiNano is a free healthcare app available on Android designed to track and manage daily self-pleasure activities. The app is user-friendly and easy to input data on a daily basis. With the app, users can easily manage their self-pleasure activities and track the frequency of their activities on the calendar. Additionally, EiNano is a useful tool for physical condition management and cycle tracking.

One of the standout features of EiNano is the data backup and restore functionality. Users with Android OS 6.0 and up can set auto backup (data sync: max 25MB) using the device's standard function "Backup & reset" by setting it to "ON". Overall, EiNano is a helpful and practical app for anyone looking to track and manage their self-pleasure activities.