# Semistry Sex App — Activities and Statistics

> App for tracking sexual activities, calculating experience metrics, and journaling relationships. (iPhone/iPad app by SEMISTRY Inc.)

- Source: https://appshunter.io/ios/app/semistry-sex-app/id1036035078 (this page in markdown: same URL + `.md`)
- Developer: [SEMISTRY Inc](https://appshunter.io/developer/1036035077)
- Category: Lifestyle, Health & Fitness
- Price: Free with in-app purchases
- Rating: 4.70/5 from 42 App Store ratings · 32 written reviews indexed
- Age rating: 17+
- Requires: iOS 10.0 · 169 MB
- Languages: American English
- Released: 2016-09-15
- Data updated: 2026-06-10
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/semistry-sex-app/id1036035078/reviews.md

## What is Semistry Sex App?

Semistry is the companion app for the active sex life- developing how we understand sex, and ultimately ourselves.

· The Semistry Index holds the largest collection of sexual activities in the world- over 1800 references- organized by how common or rare they are in the general population. 

· Calculate your Sexual Experience Metric - S.E.M.- by taking the SEMistry Test. Everyone has a unique SEM score, based on the sexual activities experienced throughout their adult sex lives. 

· The Semistry Diary allows you to visualize and organize your sexual relationships like never before. Track individual sexual partners and re-discover the high and low points of your sex life.  

The gamified approach creates a fun and rewarding experience where users can securely and anonymously review their own sexual history. By encouraging sexual self-knowledge, Semistry seeks to break taboos, promote tolerance and diversity of sexual experience - all from the privacy of your mobile device. Research your sex life with Semistry.

## Key features

- Extensive sexual activity index
- Sexual Experience Metric (SEM) calculation
- Personalized SEM test
- Sexual relationship diary
- Partner tracking
- Anonymous sexual history review

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Research Edition | $2.99 | one-time |
| Partners | $0.99 | one-time |


## Recent user reviews (10 of 32)

All indexed reviews: https://appshunter.io/ios/app/semistry-sex-app/id1036035078/reviews.md

### 3/5 — Tracker

*2022-11-01, version 1.4.4*

It would be great if they added a tracker to this.

### 5/5 — Great way to stay creative!

*2020-09-05, version 1.4.4*

This app is awesome, gives you some cool ideas and turns the best part of life into a game, definitely recommend.

### 5/5 — the coolest app

*2019-06-17, version 1.4.2*

i enjoyed this app a lot. the only problem i’m finding is that i can’t upgrade to the research version, which i would love to do.

### 5/5 — Great app

*2019-03-28, version 1.4.1*

After fixing the issue with iPod 6 got the app working and love it

**Developer response:** We're happy to inform you we've just released an update for 6th gen iPod Touch devices- please let us know if there is anything else we can do!

### 5/5 — I should download this app earlier

*2018-06-30, version 1.3.3*

How can I don’t know about this excellent app for a long time? This app is great! App works great for what I needed

### 5/5 — Thank you

*2018-06-30, version 1.3.3*

I have used you for months. With only a short time of issues. Compared to what good you have done, those issues are nothing!

### 5/5 — Amazing

*2017-12-23, version 1.2.5*

I can know how many time I have gotten a climax or done other the kinds of making love which is a little guiltily amazing to me:))))

### 5/5 — Smart app

*2017-12-23, version 1.2.5*

I get to say what I've been doing during my process of making love on this app through the information I have type in. How smart:00

### 5/5 — Good

*2017-12-23, version 1.2.5*

I can safely and anonymously review my own sexual history with this app without having to do much which is quite nice:) good

**Developer response:** Thank you for the review!

### 5/5 — Helpful

*2017-12-23, version 1.2.5*

I was just curious about how this app works at first, but they can help me to do some research it's about my sex life which I would never think of before!!!

## Frequently asked questions about Semistry Sex App

### What does the Semistry Sex App do?

This app serves as a companion for an active sex life, aiming to deepen understanding of sex and oneself. It features a large index of sexual activities, a tool to calculate a personal Sexual Experience Metric (SEM), and a diary to track sexual relationships and partners.

### How does the Semistry Index work?

The Semistry Index contains over 1800 sexual activities, organized by their commonality in the general population. This allows users to explore and understand the range of sexual experiences.

### What is the Sexual Experience Metric (SEM)?

The SEM is a score calculated by taking the SEMistry Test within the app. It is based on the sexual activities a user has experienced throughout their adult sex life, providing a unique metric for each individual.

### Is the app free to use?

The app is free to download and use, with options for in-app purchases. These purchases likely unlock additional features or content beyond the basic functionality.

### What are the benefits of using the Semistry Diary?

The Semistry Diary allows users to visualize and organize their sexual relationships. You can track individual partners and review the highs and lows of your sexual history in a private and anonymous manner.

## Version history (last 5 releases)

### 1.4.4 — 2020-06-29

General bug fixes and stability improvements.

### 1.4.3 — 2019-07-30

· Fixed a bug that prevented users from upgrading their app.
· Fixed rare restarting bug for some users.

### 1.4.2 — 2019-05-04

More Spring bug fixes! 
· Fixed rare crash during App start.
· Small update to the Initial Selection screen.
· Added a new Alert pop-up for new users and partners.

### 1.4.1 — 2019-03-27

Spring bug fixes:
· iPod 6th gen black screen/crash fixed.
· Minor update to guide for New Partners.
· "Date of Birth" picker bug fixed.

### 1.4 — 2018-12-18

Update 1.4 is live! Happy Holidays!
· SEM scores now feature 3 letters (BAX) and a number (9999) to better indicate one's general sexual experience.
· Updated Report screen.
· Better iPhone X+ support.
· Various small bug fixes.

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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 2026-06-10.*