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Android Apps > Lifestyle > threeR
threeR icon

threeR

Delight System Inc.
4.13
2,383 reviews
1,000,000+
Downloads
Free

The garbage separation guide app for municipalities throughout Japan.

threeR Screenshot 1 of 5
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threeR Screenshot 5 of 5
Screenshots by Delight System Inc., from the Google Play listing
View on Google Play

AppBrain's verdict

EstablishedPopularWell rated
Rating on Google Play
4.13
2,383 ratings
Installs
1.7 million
Last updated
November 4, 2025
Ads
No ads
Size
N/A

threeR is popular, with 1.7 million installs. Users rate it well: 4.1 stars from 2,383 ratings.

Official page on Google Play

User feedback

Ratings and reviews on Google Play

Comments on threeR for Android

★★★★★ Tiny Adventures · Sep 27, 2019
I've given this a 5 star purely to support the development of this app as it's a great idea. There's no Hakuba though, so I deleted it instantly. Would love to see more user-friendly ways to help people with their rubbish sorting (especially foreigners) it's such an important thing to do.
★★★★☆ Saeem Osman · Jul 15, 2022
I can't see the areas from gunman prefecture. Could you please add this area? Also, could you please add the English version of the burnable a non-burnable waste list in English? Thank you.
★★★★☆ Millie Wokoma · Nov 10, 2024
If you can find your address in Japanese, this app is great for telling you when to put it what garbage. I just wish it had more English!
★☆☆☆☆ Primal Convoy · Aug 6, 2023
1/ Districts are NOT in English version. 2/ Areas are misspelt in romaji. 3/ No integration with Google calendar. 4/ No automatic/bulk notifications for EVERY rubbish day. 5/ Areas are not listed in alphabetical order. 1 star until fixed.
★★☆☆☆ Kiera Slyph · Feb 21, 2025
It's good but i didn't find ube shi in Yamaguchi, only available for houfu shimonoseki and Yamaguchi only for city... I need for ube city actually
★★☆☆☆ Sethu · Mar 22, 2022
It seems like a great app for foreigners who need help with the garbage disposal rules and times, but unfortunately I am unable to use it because my municipality (Ashikaga City) is not listed in this app):

Google Play Rating history and histogram

1.2K
600
300
300
0

Store listing

By Delight System Inc., from Google Play
Description by Delight System Inc. Written by the developer, not by AppBrain. Click to read.
threeR from Delight System Inc is the garbage separation guide app for municipalities throughout Japan.
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

Safety and 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

24 libraries
Subscribe to see full permission and library details

Releases

Updates seen on Google Play
Launched
April 2015
  • Nov 4, 2025UpdateVersion 2.9.4
  • Aug 3, 2025UpdateVersion 2.9.3
  • Aug 14, 2024UpdateVersion 2.9.2
  • Jun 19, 2024UpdateVersion 2.9.1
  • Jan 23, 2024UpdateVersion 2.8.7
Show all changes Show fewer

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Installs

Tracked by AppBrain
Last 30 days
17 thousand
Per day
550
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 550 installs per day.

Rankings

Google Play top charts
Highest rank
#102
Chart
Top Free
Lifestyle
Country
Japan

Google Play Rankings for threeR

Top rankings

Rank Country Category List
102 Japan Lifestyle Top Free
Show all market rankings

Ranking history in Japan

About the app and developer

About threeR

threeR is a lifestyle app developed by Delight System Inc.

Install Statistics

threeR has been downloaded 1.7 million times. In the last 30 days, the app was downloaded 17 thousand times.

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.

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.

App Performance Report

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Developer information for Delight System Inc.

Delight System Inc.

3r-android@delight-system.co.jp

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Share threeR

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