Details

  • Released
  • Updated
  • March 31, 2021
  • July 17, 2026

Features

Costco Japan screenshot #1 for iPhone
Costco Japan screenshot #2 for iPhone
Costco Japan screenshot #3 for iPhone
Costco Japan screenshot #4 for iPhone
Costco Japan screenshot #5 for iPhone
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About

Shop a wide selection of items, manage your membership, and access exclusive savings. Browse online exclusives, create wishlists, and view your purchase history. Your digital membership card is also available for easy in-warehouse checkout.

Browse expanded online selection
Create product wishlists
Digital membership card
Renew or become a member
Access online savings
View purchase history
Check warehouse events
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What's New in Costco Japan

3.35.0

July 17, 2026

Thank you for using the official Costco app. We have made some improvements to the app to ensure better experience. Please look forward to future improvements and features!

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User reviews

アホか!

家族カードが一枚無料で登録可能と言われたので希望したら「お嬢様の分はご帰宅後にゆっくり登録できますよ」と言われたので、さっそく帰宅後に登録したら「登録カウンターにお越しください」って…。
確かに会員情報は自宅で入力できるけど、最終的には店舗に行く必要があるって、こんなアホで非効率なことってあります?
だったらカウンターで「店舗での最終登録が必要です」って説明してくれればイイのに。

あと、やたらと「黒カードにしましょう」って勧誘が多い。
「白でいいです」って言ってるのに何度も何度も「黒に」「黒に」ってホントうるさい。

あ〜また行かなきゃいけないのが面倒〜!

結局店舗…

いちいちカードを持つのが手間なのでオンラインに登録。よしこれで使える!と思ったら最後の認証は店舗にGOですよ、しかもわざわざ時間をとって店舗へ行ったのになぜか認証が反映されない。係のお姉さん『うちでは反映されてます〜』って…私の携帯には何も反映されてない、真っ赤な文字でカウンターで手続きって出てる。苦手なのかなんなのか、とにかく自分に非は無いから店舗外でゆっくり設定して下さいと追い出されました。仕方なくアプリ削除、再登録、再起動。そしたらまた一からやり直し、アプリを削除したり、機種変したらまた店舗で最初からお手続きが必要です、、と。
もうコレ必要ある?結局物理で良いし、今日だって家族カード(物理)で買い物出来たけど、それがなかったら入店拒否なの?年会費払ってるのに?
これからデジタル考えてる方はよくよく気をつけて下さい。やっぱ物理が最強でした。
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Why is it so hard?

Costco, an American company cannot add English labels to their app in Japan? How is it even a hard thing to do???
I mean everything else is set to English if you want it to...
Maybe using the same developers as Amazon Music Japan?
:(
Added to this the website is even worse, constantly logs you out, or changes from English back to Japanese!
Hire someone who can do their job, it’s not that hard!
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App rất khó đăng kí

Khi đăng kí nhập tất cả các thông tin như yêu cầu đến lúc gửi thì không được xác nhận. Lúc đó là 22h nên nghĩ giờ hành chính sẽ được xác nhận sớm hơn nhưng cũng có gì thay đổi. Vì một số mặt hàng chỉ hiện giá khi đăng nhập nên khá bất tiện.

ゴミアプリ

エグゼクティブのリワード(ポイント)があといくら残っているのか分からない(表示されるけど額がめちゃくちゃで理解不能)
レジでポイント全て使ってしまったのにリワード¥〇〇とか残高¥〇〇って表示されてる。いやまだ残ってんの!?年末まで有効で来年になったら消えるんだけど!?
まじで糞意味わからん!
あと、グローバルカードの方のリワードが表示されない!!ゼロのまま!
詐欺!?
グローバルの詳細を見ると(カード情報全て入力する必要有り)まだリワードが残ってる。
マジでどうなってんの!?このリワードはどうやって使えば良いの?
レジで全部使うって言ったのに!?
コストコ、客なめすぎでは!!?

Developer apps

FAQ

What can I do with Costco Japan?

Costco Japan allows you to browse and shop its online selection, manage your membership, access savings, and use a digital membership card for in-warehouse purchases. You can also create wishlists and view your purchase history.

Is a Costco membership required to use Costco Japan?

A Costco membership is required to make purchases and enjoy full functionality within the Costco Japan app. You can become a member through the app, website, or at a warehouse location.

How do I access my Costco membership card in the app?

Your digital membership card is available within the Costco Japan app. You can present this digital card on your phone at the register for easy entry into the warehouse and during checkout.

Can I renew my Costco membership through the app?

Yes, you can conveniently become a new Costco member or renew your existing membership directly through the Costco Japan app on your phone.

Does Costco Japan offer online savings?

Yes, the app provides convenient access to the latest online savings directly on your device. You can easily view these exclusive deals to maximize your savings.

How can I see my past Costco purchases?

The Costco Japan app features a purchase history section where you can easily review your online order history. This allows you to look back at previous purchases or re-order items.

What is the age rating for Costco Japan?

Costco Japan has an age rating of 4+, making it suitable for a wide range of users. This indicates it is appropriate for children and adults.

How often is Costco Japan updated?

The app is expected to be steadily updated to add more exciting and convenient features. The latest version, 3.34.0, was last updated on June 25, 2026.