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Android Apps > Simulation > My Sister, My Mistress
My Sister, My Mistress icon

My Sister, My Mistress

3.0.0
Interactive Studio Inc.
4.71
29 reviews
5,000+
Downloads
Free

Will you surrender to your sadistic stepsister’s twisted desires?

My Sister, My Mistress Screenshot 1 of 6
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My Sister, My Mistress Screenshot 6 of 6
Screenshots by Interactive Studio Inc., from the Google Play listing
View on Google Play

Summary

My Sister, My Mistress is a narrative-driven simulation that places you in a tense, choice-heavy story about a stepsister and the social maze around school life. The game blends drama, romance, and dark twists in an interactive format, with 5,000+ total downloads and 110 in the last 30 days, rated 4.71 from 29 reviews.

Pros & Cons

  • Strong, character-driven plot with memorable leads Reika, Seri, and Yoshiko
  • Decision-driven branching endings that keep replayability high
  • Free-to-play with depth and meaningful choices
  • Ad-supported model enables a free experience while delivering dynamic content
  • Contains darker, mature themes and sensitive relationships that may not suit all players
  • School-based setting with potentially uncomfortable dynamics

About My Sister, My Mistress

My Sister, My Mistress is a simulation app developed by Interactive Studio Inc.

Install Statistics

My Sister, My Mistress has been downloaded 5.2 thousand times. In the last 30 days, the app was downloaded 110 times.

User Ratings

My Sister, My Mistress is rated 4.71 out of 5 stars. The rating is based on 29 ratings.

App Information

My Sister, My Mistress is freely available from Google Play. The APK size is 47.74 MB. The latest APK version available is 3.0.0. The last update was on July 24, 2026.

Technical Requirements

The app has a content rating of Medium Maturity. The app has been available on Google Play since August 2025.

Description by Interactive Studio Inc. (from Google Play)
■Synopsis■
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More data about My Sister, My Mistress

Price Free
Total installs 5.2 thousand
Recent installs 110
Rating 4.71 based on 29 ratings
Ranking Not ranked
Version 3.0.0
App size 47.7 MB
Number of libraries ?
Maturity Medium Maturity
Ads Contains ads

App Performance Report

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Google Play Rating history and histogram

20
8
0
0
0

Installs over time

My Sister, My Mistress has been installed 5.2 thousand times. Over the past 30 days, it has been installed 110 times.

Changelog of My Sister, My Mistress

Show changelog

Developer information for Interactive Studio Inc.

Interactive Studio Inc.

support@interactive-studio.jp

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Comments on My Sister, My Mistress for Android

★★★★★ Blue Lost · Apr 11, 2026
Couldn't even start it. Hurry up and fix it, mister app developer!!! OK???
★★★★★ D R · Sep 11, 2025
My favorite character is Reika. The main character is annoying though.
★★☆☆☆ Hussein Daher · Feb 25, 2026
This game is designed to make u watch ads in an evil way. They don't push it around as other apps, but to make any choice u need to watch like 10 ads. So I my humble opinion if u want to make people watch so many ads why not have them watch a 10 mins ad or something and don't bother them when they're playing. (it's either watch ads or pay and prices are skyrockets)

Google Play Rankings for My Sister, My Mistress

This app is not ranked

Technologies used by My Sister, My Mistress

17 permissions
Subscribe to see full permission and library details
Trust & Safety: Relies on standard advertising and networking permissions, including access to ad IDs, internet, and push notifications, plus foreground service and license checks. Users should review the privacy policy and manage notifications accordingly.

Frequently asked questions about My Sister, My Mistress

Is My Sister, My Mistress free?

Yes. My Sister, My Mistress is free on Google Play.

Is My Sister, My Mistress still available?

Yes. My Sister, My Mistress is on Google Play, and the last update we saw was on July 24, 2026.

Does My Sister, My Mistress contain ads?

Yes. Google Play lists My Sister, My Mistress as containing ads.

How large is My Sister, My Mistress?

My Sister, My Mistress is 47.74 MB.

Is My Sister, My Mistress suitable for children?

Google Play gives My Sister, My Mistress a medium maturity rating, so it is not meant for young children.

How many times has My Sister, My Mistress been installed?

Google Play lists 5,000+ installs for My Sister, My Mistress.

How do people rate My Sister, My Mistress?

My Sister, My Mistress scores 4.71 out of 5 stars, from 29 ratings on Google Play.

Who made My Sister, My Mistress?

My Sister, My Mistress was developed by Interactive Studio Inc. It is listed in the simulation category on Google Play.

What are the best alternatives to My Sister, My Mistress?

People looking at My Sister, My Mistress also look at these simulation apps: Karate Girl vs. School Bully, High School Vampire Love Story, Scary School Simulator, Connected Hearts: Beauty f2p, Dark Romance 8 f2p.

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