# Ei Nano - Self Pleasure Diary — Record, manage, analyze data

> Private diary for solo activities with tracking, analysis, and period correlation. (iPhone/iPad app by Yoshinori Tsuchiya.)

- Source: https://appshunter.io/ios/app/ei-nano-self-pleasure-diary/id6587551910 (this page in markdown: same URL + `.md`)
- Developer: [Yoshinori Tsuchiya](https://appshunter.io/developer/1685599976)
- Category: Lifestyle, Utilities
- Price: Free with in-app purchases
- Rating: 4.60/5 from 16 App Store ratings · 10 written reviews indexed
- Age rating: 17+
- Requires: iOS 15.0 · 73 MB
- Languages: American English, French (France), German (Germany), Indonesian, Italian, Japanese, Korean, Brazilian Portuguese, Russian, Chinese (Simplified, China) and 3 more
- Released: 2024-07-29
- Data updated: 2026-08-24
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/ei-nano-self-pleasure-diary/id6587551910/reviews.md

## What is Ei Nano?

Focused on solo activities, Ei Nano serves as a diary for masturbation but is not limited to that.

Wondering about your last session? The dynamic calendar view lets you quickly revisit past activities and better 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, This year, and Last year.

Backup:
* Supports the built-in "iCloud Backup" on iOS devices.
* Within the app, you can manually back up to Google Drive and restore as needed.

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.

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:
* View the time spent on each session in minutes.
* Check the longest, shortest, and average times.
* Tap to see detailed 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 usage statistics for each category.
* Tap an item to see records.

Orgasms:
* Check orgasm statistics during self-pleasure.
* Tap to see records.

Enjoy styles:
* Check the number of participants during self-pleasure.
* See if it was alone, with two people, or with multiple people, and tap to view records.

Enjoy Ei Nano ad-free with Premium!

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.

Other benefits:
* Custom range.
* Add up to 50 photos.
* Changes theme color.
* Records location (Home, Hotel, Office, School, Open Air, Public, and Transport).
* Records place (Bedroom, Living Room, Bathroom, Kitchen, Laundry, Terrace, and Garage).

PRIVACY POLICY: https://cutboss.work/home/products/einano/privacy/
TERMS OF SERVICE: https://cutboss.work/home/products/einano/terms/

## Key features

- Session recording with notes
- Stopwatch for tracking duration
- Dynamic calendar view
- Biorhythm and frequency analysis
- Period and ovulation tracking
- Data backup and restore
- Shareable statistics

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| 2 Months Plan | $5.99 | per 2 months |
| 3 Months Plan | $6.99 | per 3 months |
| 6 Months Plan | $8.99 | per 6 months |
| Annual Plan | $12.99 | per year |
| 1 Week Plan | $0.99 | per 7 days |
| 1 Month Plan | $3.99 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Lifetime Plan | $24.99 | one-time |


## Recent user reviews (10 of 10)

All indexed reviews: https://appshunter.io/ios/app/ei-nano-self-pleasure-diary/id6587551910/reviews.md

### 5/5 — Thank you!

*2026-06-29*

Thank you to the developers for a fun, helpful app!

### 3/5 — バックアップ先にローカル環境もほしい

*2025-10-26*

やっぱり、プライベートな内容が多いのでローカル環境にバックアップできるといいと思う
NASとか

### 5/5 — よい

*2025-10-13*

タイマーをつかった測定に加えて、実際に何時何分から初めて何分に終わったのかも記録したい(朝昼夜のカテゴリだけでなく) 
また、棒グラフなどで、いつ何分したかなど、統計情報をを視覚化したい

### 2/5 — パスワード必須です

*2025-10-07*

個人情報なのでロック機能を追加して欲しい。
よろしくお願いします

### 4/5 — グラフ表示

*2025-08-24*

月毎や週毎の回数が折れ線グラフで表示されたらいいですね。
曜日や時間帯はあまり気にならないけど、先月や去年の回数が知りたいです。

### 4/5 — 満足

*2025-06-14*

いいです。ただ、タグを消せるようにてほしいです。あと、タグの順番を名前順と使用率の順で変えれるようにして欲しいです。

### 5/5 — まだ1日しか使ってないっスけど、最高のアプリっス！

*2025-05-27*

でも1つ要望があるっス！
早漏なのでタイマーを秒単位にしてほしいっス！

### 3/5 — 発想は面白いので今後の機能に期待

*2025-03-20*

iOSのヘルスケアでもアクティビティの登録で管理はできますがそちらはあくまで日付だけ。こちらはおかずの種類や道具のあるなし、自分でカスタマイズできるタグなどで細かく記録を付けられるところが特徴です。
タイマーがついているので、その気になったらボタンを押すというのが冷静に考えると愉快です。
メンバーシップや買い切りを料金を考えると、もう少し機能追加があると嬉しいと思いました。例えば同性同年齢の他の人との頻度の比較や人気のおかずなど統計的な項目で自分を振り返ることができたり、バックでの絶頂など、多様なプレイへの対応があったりすると助かります。

### 4/5 — かなりいい

*2024-12-12*

記録できる項目が多岐に渡っており非常に高評価
強いて言うなら自慰行為の種類（刺激部位）や満足度(5段階評価など)があるとさらに充実しそう
期待を込めて星4

### 5/5 — 女性のルナルナみたい。

*2024-09-04*

オナの回数の詳細を記録出来て
女性のルナルナみたい。

## Frequently asked questions about Ei Nano

### What is Ei Nano?

Ei Nano is a private diary application designed for recording and analyzing solo activities. It helps users track session details, frequency, duration, and biorhythms, offering insights into personal patterns and well-being.

### Does Ei Nano have ads?

Yes, Ei Nano contains advertisements. As a free application with in-app purchases, ads are displayed to support its continued development and availability.

### What are the subscription options for Ei Nano?

Ei Nano offers several subscription plans: a 1 Week Plan for $0.99, a 1 Month Plan for $3.99, a 2 Months Plan for $5.99, a 3 Months Plan for $6.99, and a 6 Months Plan for $8.99. These plans provide access to premium features and an ad-free experience.

### How does Ei Nano track biorhythms?

Ei Nano calculates a biorhythm index based on the frequency of self-pleasure sessions. For example, engaging in self-pleasure 21 times a month (approximately 5 times a week) is associated with an index around 0.72, potentially indicating a lower risk of prostate cancer according to a Harvard University study.

### Can Ei Nano help track menstrual cycles?

Yes, Ei Nano includes a feature to register periods. Based on recorded data, it can predict the next period and ovulation day, allowing users to check correlations between their solo activities and cycle days.

### How often is Ei Nano updated?

Ei Nano was last updated on March 31, 2025, indicating a recent update. The app is generally updated to introduce new features, improve performance, and fix bugs.

### What devices support Ei Nano?

Ei Nano is available for iPhone and iPod devices. It is designed for iOS users looking for a personal tracking and analysis tool.

### Is Ei Nano suitable for all ages?

Ei Nano has an age rating of 17+, meaning it is intended for mature audiences. This rating reflects the sensitive nature of the content and features within the application.

## Version history (last 5 releases)

### 7.1.1 — 2025-03-31

• Bug fixes and performance improvements.

### 7.0.1 — 2025-03-04

• Bug fixes and performance improvements.

### 7.0.0 — 2025-02-27

• Bug fixes and performance improvements.

### 6.4.0 — 2025-01-27

• Bug fixes and performance improvements.

### 6.3.3 — 2025-01-23

• Bug fixes and performance improvements.

## Apps similar to Ei Nano

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Girl Pleasure Secrets Tips](https://appshunter.io/ios/app/girl-pleasure-secrets-tips/id382849154) | — | Free | Lifestyle |
| [Female Orgasm Booster & Guide](https://appshunter.io/ios/app/female-orgasm-booster-and-guide/id370843571) | 2.3 (3) | Free | Lifestyle |
| [LIT: Better Sex & Intimacy](https://appshunter.io/ios/app/lit-better-sex-and-intimacy/id1627082236) | 4.2 (15) | Free | Lifestyle |
| [Ultimate Sex Tracker](https://appshunter.io/ios/app/ultimate-sex-tracker/id6753087176) | 1.0 (2) | Free | Lifestyle |
| [Smash Vault: Intimacy Log](https://appshunter.io/ios/app/smash-vault-intimacy-log/id6504907367) | 5.0 (8) | Free | Lifestyle |
| [Spicee – Ultimate Sex Tracker](https://appshunter.io/ios/app/spicee-ultimate-sex-tracker/id6741854847) | 5.0 (1) | Free | Lifestyle |

## More apps by Yoshinori Tsuchiya

- [Reminder Butler - Chat with AI](https://appshunter.io/ios/app/reminder-butler-chat-with-ai/id6448690076)
- [Fook - Food Expense Book](https://appshunter.io/ios/app/fook-food-expense-book/id6450533454)
- [Town Note - Regional Results](https://appshunter.io/ios/app/town-note-regional-results/id6463032342)
- [Documentally - Word Count Note](https://appshunter.io/ios/app/documentally-word-count-note/id6467543023)
- [Rough Budget Mate - I&E Mng.](https://appshunter.io/ios/app/rough-budget-mate-i-and-e-mng/id6470382428)
- [TIME REC. - Record Your Time](https://appshunter.io/ios/app/time-rec-record-your-time/id6472043469)

All apps by Yoshinori Tsuchiya: https://appshunter.io/developer/1685599976

## Related topics

[yoshinori tsuchiya](https://appshunter.io/ios/topics/yoshinori-tsuchiya)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-24.*