Ei Nano serves as a diary dedicated to self-pleasure, focusing on solo activities but not limited to them. Writing your daily entries has never been easier. With intuitive features, you can seamlessly document your sessions, gain deeper insights, and understand your personal patterns.

Curious about your last session? The app’s dynamic calendar view allows you to quickly revisit past activities, helping you understand your unique cycle.

Let me also explain the features below.

Notes:
* Quickly jot down details about each session.
* Add personal notes to reflect on your experiences and feelings.

Stopwatch:
* You can use the stopwatch for recording.
* No matter how engrossed you become in self-pleasure, starting the stopwatch ensures you won't forget to record.

Calendar:
* You can toggle between statistics/analysis and the calendar view.
* In the calendar, you can view records for each month.

Periods:
* By turning on the feature in settings, you can register your periods.
* Based on recorded periods, it predicts the next period and ovulation day.
* You can check the correlation between self-pleasure and period days.

Share as an Image
* Each section of the statistics/analysis can be shared or sent as an image.
* Feel free to use it for posting on social media, etc.

Date range:
* You can change the period for analyzing statistics.
* Options include All time, Last 7 days, Last 30 days, Last 90 days, Last 180 days, Last 365 days.

The following data is presented as statistics/analysis.

Last time & Biorhythm:
* You can check the date and time of the last self-pleasure session and its cycle in a line graph.
* Tap each marker on the line graph to check the index for that date.
* If you maintain self-pleasure once a day, the index is 1.00.
* For men, a Harvard University study found that engaging in self-pleasure more than 21 times a month lowers the risk of prostate cancer. With 21 times a month (or 5 times a week), the approximate index is around 0.72.
* The index can be used as a target of 0.72 or to track fluctuations in frequency when it temporarily increases or decreases.
* Unstable biorhythms might be a sign that your body and mind are not in a normal state. Understanding your biorhythm can help with health management.

Day of the week:
* You can check the statistics by day of the week.
* You can also see the total for weekdays and weekends.
* Tap each day of the week to view a list of records for that day.

Time of day:
* You can check statistics by time of day.
* Time periods are classified as morning, afternoon, evening, and night.
* Tap each time period to view a list of records for that period.

Duration:
* You can check the time spent on each self-pleasure session in minutes.
* Check the longest time, shortest time, and average time.
* Tap each of these to view a list of records.

Top tags:
* Check the frequency of tags for each record in descending order.
* Tap each tag to view a list of records.
* Added tags can be edited or deleted later.
* The "Top tags" section appears only if there are tags set; if none, it will not be displayed.

Pornography & Pleasure Toys:
* Check statistics for each category used during self-pleasure.
* Tap each item to view a list of records.

Orgasms:
* You can check the statistics of whether orgasms were achieved during self-pleasure.
* Tap to view a list of records.

Enjoy styles:
* You can check the statistics of the number of people involved in self-pleasure.
* See if it was alone, with two people, or with multiple people, and tap to view a list of records.

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Export to file:
* Export saved records to a CSV file.
* The encoding is UTF-8.

Import from file:
* Import records from a CSV file.
* Only files in the same format as the exported CSV are valid, and the file language must match the app’s language.

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