threeR is made and published by Delight System Inc. AppBrain is an independent app data site and isn't affiliated with Delight System Inc. The app name, icon, screenshots and description belong to Delight System Inc. and are shown as published on Google Play.
AppBrain's verdict
EstablishedPopularWell rated- Total installs
- 1.7 million
- Best rank
- #99
- Top Free, Japan
- Rating on Google Play
- 4.13
- 2,373 ratings
- Last updated
- November 4, 2025
threeR is popular, with 1.7 million installs. Users rate it well: 4.1 stars from 2,373 ratings. Its best ranking is #99 in Top Free, Lifestyle in Japan.
Installs
Tracked by AppBrain- Last 30 days
- 19 thousand
- Per day
- 630
- 30-day average
- Play install range
- 1+ million
- Launched
- April 2015
Installs over time
threeR has been installed 1.7 million times. Over the past 30 days, it averaged 630 installs per day.
Rankings
Google Play top charts- Highest rank
- #99
- Chart
- Top Free
- Lifestyle
- Country
- Japan
Google Play Rankings for threeR
Ranking history in Japan
Competitors
Similar apps and more from Delight System Inc.Alternatives to threeR
Releases
Updates seen on Google Play- Launched
- April 2015
User feedback
Ratings and reviews on Google PlayGoogle Play Rating history and histogram
Comments on threeR for Android
Technology
Found in the app by AppBrain- Ads
- No ads
- Price
- Free
- Libraries
- 24
- App size
- N/A
- Needs Android
- 4.0+
- Content rating
- Everyone
Technologies used by threeR
About the app and developer
About threeR
threeR is a lifestyle app developed by Delight System Inc.
Install Statistics
threeR has been installed 1.7 million times. In the last 30 days, the app was installed 19 thousand times. It is ranked in the top 100 lifestyle apps.
User Ratings
threeR is rated 4.13 out of 5 stars. The rating is based on 2.4 thousand ratings.
App Information
threeR is freely available from Google Play. The last update was on November 4, 2025.
Technical Requirements
threeR requires Android 4.0+ or higher. The app has a content rating of Everyone. The app has been available on Google Play since April 2015.
App Performance Report
Get a detailed PDF report for threeR with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more
Get PDF Report — $29Developer information for Delight System Inc.
3r-android@delight-system.co.jp
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Store listing
By Delight System Inc., from Google Play“The garbage separation guide app for municipalities throughout Japan.”
Description by Delight System Inc. Written by the developer, not by AppBrain. Click to read.
The residents of municipalities utilizing this service can download and use this app for free. This app informs of neighborhood garbage collection days, explains the types and methods for disposing of various types of residential garbage, has a word search function for checking the disposal methods for various types of Garbage and provides separation rules and collection information for residential garbage.
In addition, messages from your local government can be received. Finally, the quiz function makes learning about garbage disposal fun! Even those troubled by garbage separation rules will find them easy to understand by using their smartphone.
1. Neighborhood Garbage Collection Calendar Displays the collection days for burnable garbage, non-burnable garbage, and recyclable garbage
2. Garbage Separation Guideline Booklet Browse your local government issued “Garbage Separation Guideline Booklet” on your smartphone
3.Garbage Type Search Feature Check the different classification types and local collection points by searching by the name of a garbage item
4.Local Government Announcement Feature Receive up-to date announcements and emergency news related to garbage from your local government
5.Garbage Quiz Deepen your knowledge about your local government’s garbage collection system through the quiz feature of this app