# CITIZEN Eco-Drive W770 > Official companion app for CITIZEN Eco-Drive W770 watch, enabling notifications and custom functions. (iPhone/iPad app by CITIZEN WATCH CO.,LTD.) - Source: https://appshunter.io/ios/app/citizen-eco-drive-w770/id1527673273 (this page in markdown: same URL + `.md`) - Developer: [CITIZEN WATCH CO.,LTD](https://appshunter.io/developer/434806605) - Category: Utilities, Lifestyle - Price: Free - Rating: 2.00/5 from 21 App Store ratings · 22 written reviews indexed - Age rating: 4+ - Requires: iOS 15.6 · 132 MB - Languages: American English, French (France), German (Germany), Italian, Japanese, European Portuguese, Chinese (Simplified, China), European Spanish, Chinese (Traditional, Taiwan) - Released: 2021-06-30 - Data updated: 2026-08-18 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/citizen-eco-drive-w770/id1527673273/reviews.md ## What is CITIZEN Eco? ●Overview This is the official app for the "CITIZEN CONNECTED Eco-Drive W770" watch. By syncing the watch and smartphone app, you will be able to receive notifications from incoming calls, messages and app notifications, through case vibration, sound and movement of the watch hands. Link the app with IoT platform service "Riiiver" to customize the buttons on your watch to perform your favorite iiidea's/functions and use it with a single push. For more information, please visit the following website: https://riiiver.com/ Depending on which functions you choose, the app may access your device’s location information in the background in order to operate, even when the app is not open. For a detailed explanation of how we use any data we collect, please refer to our Privacy Policy: https://riiiver.com/en/privacy/riiiver/ ## Key features - Smartphone synchronization - Incoming call notifications - Message notifications - App notification alerts - Watch hand movement alerts - Customizable button functions via Riiiver ## Recent user reviews (10 of 22) All indexed reviews: https://appshunter.io/ios/app/citizen-eco-drive-w770/id1527673273/reviews.md ### 1/5 — Used to work great *2026-05-29* My W770 used to connect without issue. Since moving to iOS 26 the watch connects once and then refuses to connect. I have cleared the pairing from the watch, deleted the device from Bluetooth and each time I try and reconnect it works great. The moment I get too far from my phone or when it disconnects overnight, it refuses to reconnect and I have to start over. I end up in the same loop. ### 1/5 — 不良 *2026-01-05* ペアリング出来なくなりました。 インストールしなおしても変わらず。 時計のみでの時刻調整できずペアリング出来ないならば全く意味のない代物となりました。 残念です。 ### 1/5 — ファームウェアアップデートできない *2025-05-28* 何度試しても、何度充電しなおしてもエラー表示でファームウェアアップデートが出来ないと出る。 こんな事なら買わなかった。 返品希望レベル。 ### 1/5 — ダメ *2025-02-09* ウァームウェアアップデートが何度やっても失敗するので、自動で日付や時刻が合わせられない 時計自体はよい アプリが星ひとつもあげたくない ### 2/5 — 時計自体はいいが…アプリが *2025-01-05* 時計自体は完璧ですが、アプリの安定度が…すぐBluetoothが切断されてしまいます。すぐ改善してほしいです。お願いします。 ### 1/5 — Bluetoothがブチブチ *2024-04-13* 機能等凄い良い時計なのに、アプリが新しくなって Bluetoothの切れかたがハンパない 要改善よろしく **Developer response:** コメントをありがとうございます。Bluetoothの接続についてご不便おかけして申し訳ございません。ご指摘いただいた内容につきましては開発チームにフィードバックさせていただきます。差し支えなければ接続が切れるという点についての内容やOSバージョン、利用している端末などの詳細を以下のお問合せフォームからご連絡いただけると幸いです。 お問い合わせフォーム: https://faq-citizen.dga.jp/form/contact.html ### 1/5 — Syncing trouble *2022-10-13* I updated to the IOS 16 on my iPhone an I had not synced my phone in a while to update time and was needing it to be an alert for calls. When I turned it on my watch started going back in time and date. Tried to use local time to set too an was still off. Liked some of the features but has had a lot of issues with the app. I do IT for a living and problem with this app make me want to change to an apple product. But I love the look of older style watches. ### 2/5 — Bluetooth接続が安定しない *2022-08-12* 他の皆さんも記載の通り、時計とのBluetooth接続が安定しません。接続が維持させるときもあれば、30分程度で切れてしまうこともあります。 毎回ではないですが、どうもアプリがタスクキルされてしまっているような、、。 ウィジェットとしてホームに常駐させる等、何かしらタスクキルを逃れ、接続が安定するようなアップデートを望みます。 また初めて利用開始した際に電話の通知がうまくできず（LINEの通知は動作した）、結局電話通知のiiideaを削除&再ダウンロードすることできちんと時計側で通知を受け取れるようになりました。 時計自体は非常に完成度も高く、通常のスマートウォッチのように毎日充電は面倒くさい、電話の取り逃がしだけ無いように通知が欲しい、という自分にはピッタリ、このあたりはさすがシチズンという出来です。 ### 1/5 — Can’t set right time *2022-07-26* I regret I bought w770 mv if possible I need to return ### 1/5 — マジ切れる *2022-06-25* 説明がないままアップデートしてしまって接続がブチブチ切れシチズンにメールで相談したがほぼ相手にされず結局泣き寝入り状態です なんとかしてくれ！ ## Frequently asked questions about CITIZEN Eco ### What is CITIZEN Eco-Drive W770 used for? CITIZEN Eco-Drive W770 is the official app for the "CITIZEN CONNECTED Eco-Drive W770" watch. It allows you to receive notifications from your smartphone directly on your watch through vibration, sound, or hand movement. ### Can I customize the buttons on my CITIZEN Eco-Drive W770 watch with this app? Yes, by linking the app with the "Riiiver" IoT platform, you can customize the buttons on your watch to perform your favorite functions with a single push. ### Does CITIZEN Eco-Drive W770 require location access? Depending on the functions you choose, the app may access your device's location information in the background to operate, even when the app is not open. You can refer to their Privacy Policy for details. ### What devices is CITIZEN Eco-Drive W770 compatible with? The app is supported on iPhone and iPod devices. It is designed to work with the CITIZEN Eco-Drive W770 watch. ### How often is CITIZEN Eco-Drive W770 updated? The latest version of the app is 2.2.194, and it was last updated on July 22, 2025. This indicates a relatively recent update, suggesting ongoing support. ### What is the age rating for CITIZEN Eco-Drive W770? The app has an age rating of 4+, making it suitable for a wide range of users. ### What is the user rating for CITIZEN Eco-Drive W770? The app has a user rating of 2.1 stars from 18 ratings. This indicates that users have had mixed experiences with the application. ### Is CITIZEN Eco-Drive W770 free to download? Yes, CITIZEN Eco-Drive W770 is available for free download. It does not have in-app purchases or advertisements. ## Version history (last 5 releases) ### 2.2.194 — 2025-07-22 Thank you as always for using our app.  We have made the following updates: - Some minor maintenance and bug fixes. ### 2.2.193 — 2023-11-20 Thank you as always for using our app. We have made the following updates: - Change of specifications related with "X notification function" - Change of specifications related with "Light Level" - Some minor maintenance and bug fixes. ### 2.2.192 — 2023-06-06 Thank you as always for using our app. We have made the following updates: - Some minor maintenance and bug fixes. ### 2.2.191 — 2022-05-09 Thank you as always for using our app. We have made the following updates: - Supports iiidea to notify the watch by selecting any app. - Added function for automatic display of notifications from store. - Some minor maintenance and bug fixes. ### 2.2.182 — 2021-10-28 Thank you as always for using our app. We have made the following updates: - Some minor maintenance. ## Apps similar to CITIZEN Eco | App | Rating | Price | Category | | --- | --- | --- | --- | | [OttoPilot](https://appshunter.io/ios/app/ottopilot/id6449269013) | 2.2 (30) | Free | Utilities | | [SpaceWalker by VITURE](https://appshunter.io/ios/app/spacewalker-by-viture/id6450915765) | 4.1 (1,293) | Free | Utilities | | [tickIQ: Measure, Track Watches](https://appshunter.io/ios/app/tickiq-measure-track-watches/id6749871310) | 4.6 (699) | Free | Utilities | | [AtomicClock: NTP Time](https://appshunter.io/ios/app/atomicclock-ntp-time/id1402993049) | 4.8 (5,497) | Free | Utilities | | [CASIO WATCH+](https://appshunter.io/ios/app/casio-watch-plus/id760165998) | 2.9 (44) | Free | Utilities | | [Atomic Clock PRO](https://appshunter.io/ios/app/atomic-clock-pro/id899090224) | 4.7 (10,071) | Free | Utilities | ## More apps by CITIZEN WATCH CO.,LTD - [Citizen Eco-Drive Proximity2.5](https://appshunter.io/ios/app/citizen-eco-drive-proximity25/id824074813) - [CITIZEN Bluetooth Watch](https://appshunter.io/ios/app/citizen-bluetooth-watch/id1068381349) - [CITIZEN Eco-Drive Bluetooth S](https://appshunter.io/ios/app/citizen-eco-drive-bluetooth-s/id1268478800) - [CITIZEN Eco-Drive W510](https://appshunter.io/ios/app/citizen-eco-drive-w510/id1423016104) - [Riiiver](https://appshunter.io/ios/app/riiiver/id1449580790) - [CITIZEN CONNECTED](https://appshunter.io/ios/app/citizen-connected/id1483037539) All apps by CITIZEN WATCH CO.,LTD: https://appshunter.io/developer/434806605 ## Related topics [citizen watch](https://appshunter.io/ios/topics/citizen-watch) · [citizen bluetooth watch](https://appshunter.io/ios/topics/citizen-bluetooth-watch) · [770](https://appshunter.io/ios/topics/770) · [ecodriver](https://appshunter.io/ios/topics/ecodriver) · [my citizen watch](https://appshunter.io/ios/topics/my-citizen-watch) --- *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 2026-08-18.*