# COCOA - COVID-19 Contact App > COVID-19 contact tracing application service discontinuation notice. (iPhone/iPad app by Ministry of Health, Labour and Welfare - Japan.) - Source: https://appshunter.io/ios/app/cocoa-covid-19-contact-app/id1516764458 (this page in markdown: same URL + `.md`) - Developer: [Ministry of Health, Labour and Welfare - Japan](https://appshunter.io/developer/1084658052) - Category: Medical, Health & Fitness - Price: Free - Rating: 1.91/5 from 96 App Store ratings · 32 written reviews indexed - Age rating: 4+ - Requires: iOS 13.7 · 76 MB - Languages: English, Japanese, Chinese - Released: 2020-06-18 - Data updated: 2026-06-10 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/cocoa-covid-19-contact-app/id1516764458/reviews.md ## What is COCOA? The service of Contact-Confirming Application COCOA will be discontinued. Please update to the lastest version of this app and start the procedure to end the service. Regarding Service Discontinuance, please refer to the below URL. https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/cocoa_00138.html This app is for use in Japan. ■ Supported OS versions Android 6.0 or higher ■ FAQ & Contact FAQ (Japanese): https://www.mhlw.go.jp/stf/seisakunitsuite/bunya/kenkou_iryou/covid19_qa_kanrenkigyou_00009.html E-mail: appsupport＠cov19.mhlw.go.jp ■ Privacy Policy & Terms of Use Privacy Policy(English): https://www.mhlw.go.jp/stf/seisakunitsuite/english_pp_00032.html Terms of Use(English): https://www.mhlw.go.jp/stf/seisakunitsuite/english_rk_00031.html ## Key features - Service discontinuation notice - Update to latest version - Initiate service end procedure - COVID-19 contact confirmation ## Recent user reviews (10 of 32) All indexed reviews: https://appshunter.io/ios/app/cocoa-covid-19-contact-app/id1516764458/reviews.md ### 1/5 — ダウンロードさえ出来れば入国できる？ *2022-05-16, version 2.0.0* 米国でアプリを開くとNetwork Connection Errorがでる。調べると、日本のネットワークにつながればエラーがなくなるらしい？　だったらなぜそう書かない？　これでどんだけの人間が不便を被ると思ってる？　ユーザー目線ゼロの役立たずのアプリ。 ### 2/5 — Network Connection Error *2022-05-14, version 2.0.0* If you want to (or must) use the Exposure Notification system on iOS in Japan, you must use this app. If you attempt to register in the app before you arrive, you will get an unhelpful “Network Connection Error”. The app will not let you proceed unless you are connected via a Japanese network. Note that international roaming on a foreign cellular network will not work. You must connect via a WiFi network in Japan or via a Japanese cellular network. ### 1/5 — Network error outside Japan *2022-04-12, version 2.0.0* The Japanese government is so incompetent with a lot of things but especially with anything IT. This app is one of those examples. This app's network error message needs to let people know that this happens when they try to use it outside Japan. ### 1/5 — Just a annoyance *2022-01-19, version 1.4.1* You are forced to download this app when you enter Japan and won’t do anything afterward. ### 1/5 — Network Error *2022-01-06, version 1.4.1* When I try to register it says network error ### 1/5 — Nobody checked if this app was installed before entering Japan *2021-12-24, version 1.4.1* I just came back to Japan, and the government webpage asked everyone to install this app. I had the same issue with network connection, and a bit worried if it would affect going through the immigration process. However, at the airport they did not check if this app was installed. They checked another app, MySOS, but didn’t care about COCOA. I guess they know this app is full of problems and useless. ### 1/5 — Ridiculous. *2021-12-16, version 1.4.1* Just make HCQ or Ivermectin available already at the pharmacy or kiosks as over the counter drug. This kind of waste should not have existed. ### 1/5 — 論外 *2021-12-14, version 1.4.1* 登録以前に、アプリが開きません。 ### 1/5 — It doesn’t work *2021-12-03, version 1.4.1* It keeps telling me that there is network issue when there isn’t … it doesn’t even start. ### 4/5 — Version 1.4.0 Crashes When Run <— Fixed! *2021-11-26, version 1.4.1* They did a good job delivering a fix in one day. ## Frequently asked questions about COCOA ### What is this app about? This application was designed to help confirm contacts related to COVID-19. However, its service is being discontinued. Users are instructed to update to the latest version to begin the process of ending the service. ### What do I need to do to end the service? To end the service, you need to update the application to its latest version. Once updated, you can start the procedure to end the service as outlined by the developers. ### Is this app still active? No, the service of this application will be discontinued. Users are advised to update to the latest version and follow the instructions to end the service. Information regarding the discontinuance can be found at the provided URL. ### What operating systems does this app support? This app supports Android 6.0 or higher. For other operating systems, compatibility information is not provided in the description. ### Where can I find more information or contact support? You can find more information and frequently asked questions (FAQ) in Japanese at the provided URL. For direct contact, an email address is also available: appsupport＠cov19.mhlw.go.jp. ## Version history (last 1 release) ### 3.0.0 — 2022-11-17 ・Announcement of Service Discontinuance is displayed on various screen. (including welcome screen) ・A function to stop application and OS background refresh has been added. ## Apps similar to COCOA | App | Rating | Price | Category | | --- | --- | --- | --- | | [AirStrip OB](https://appshunter.io/ios/app/airstrip-ob/id309381240) | 4.0 (3) | Free | Medical | | [Diário Cefaleia](https://appshunter.io/ios/app/diario-cefaleia/id550315520) | 4.0 (1) | Free | Medical | | [USPSTF Prevention TaskForce](https://appshunter.io/ios/app/uspstf-prevention-taskforce/id311852560) | 3.6 (68) | Free | Medical | | [Dog Symptom Checker](https://appshunter.io/ios/app/dog-symptom-checker/id392537780) | 1.0 (1) | $2.99 | Medical | | [Cardio Valve](https://appshunter.io/ios/app/cardio-valve/id516325480) | 4.8 (4) | Free | Medical | | [Hypnosis for Childbirth](https://appshunter.io/ios/app/hypnosis-for-childbirth/id477599840) | 5.0 (1) | $4.99 | Medical | ## More apps by Ministry of Health, Labour and Welfare - Japan - [マルチジョブ健康管理ツール](https://appshunter.io/ios/app/id1499028732) - [EMIS（DMAT用）](https://appshunter.io/ios/app/emisdmat/id1589207592) - [HACCP衛生管理記録アプリ](https://appshunter.io/ios/app/haccp/id6762963494) All apps by Ministry of Health, Labour and Welfare - Japan: https://appshunter.io/developer/1084658052 --- *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.*