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マメタス by WealthNavi(ウェルスナビ)

マメタス by WealthNavi(ウェルスナビ)

by WealthNavi Inc.

3 ratings
22 reviews
💰 Finance
Free

Details

Released
December 11, 2017
Updated
September 9, 2026

Developer

WealthNavi Inc.
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マメタス by WealthNavi(ウェルスナビ) screenshot #5 for iPhone
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About

This app automatically invests your spare change from daily purchases. It offers automated, diversified investing managed by a robo-advisor, ideal for those new to wealth management. Choose your preferred spare change amount for investment.

✓Invests spare change from daily purchases
✓Automated investment with robo-advisor
✓Selectable spare change amounts (100, 500, 1000 yen)
✓Monthly automatic withdrawals for investment
✓International diversified investment
✓Automated rebalancing and tax optimization
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What's New in マメタス by WealthNavi(ウェルスナビ)

3.1.11

September 9, 2026

マメタスをご利用いただきありがとうございます。 アップデート内容は以下の通りです。 ・軽微な修正を行いました

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User reviews

Most RecentHighest RatedLowest Rated

『認証エラー』

マメタスにログイン後、『認証エラー』の表示になりました。
パスワードを変えても、何度も同じ現象です。
SShine犬

マネーフォワードと連携できない

ウェルスナビが提供しているサービスなのでマネーフォワードとも連携できるかと思いきや、連携ができず使いづらさを感じています。ここさえ改善してもらえれば評価が上がると思うのですが…
L)Liz( ˊᵕˋ )

まめこ

気に入ってかれこれ2年コツコツと積み立ててます。
が、ある日突然、「ただいま接続しづらい状況です」のエラーが出てアプリが開けなくなりました。
仕方なくアプリを再ダウンロードするも、
同じエラーが出て一向に開けません。。

早くなおしてー泣
Rrnccdsjz

ユーザー登録が，，，

メールに書かれたリンクをタップしても，元の画面に戻るだけなんですけど，，，
対応お願いします。
ささあはた、かたかた、らな、らた

ユーザー登録できない

メール認証がうまく働いていないみたいです！
ご対応ください〜
丹丹生輪大納言
See 17 more reviews

Developer apps

ウェルスナビで全自動の資産運用を
ウェルスナビで全自動の資産運用を

by WealthNavi Inc.

💰 Finance

(17)

Free
See developer apps

FAQ

How does マメタス invest my spare change?

マメタス invests the 'spare change' from your daily credit card purchases. You can select the spare change amount to be invested (100, 500, or 1000 yen). This accumulated spare change is then automatically withdrawn from your bank account monthly and invested by the robo-advisor, WealthNavi.

What is WealthNavi, the robo-advisor used by マメタス?

WealthNavi is a robo-advisor that performs automated, diversified international investments based on Nobel Prize-winning theories. It aims to help users form assets steadily over the medium to long term, overcoming common psychological pitfalls of investing.

What security measures does マメタス have in place?

マメタス encrypts and strictly manages customer personal information. The app is developed by WealthNavi Inc., a licensed financial instruments dealer in Japan.

Is マメタス suitable for beginners in investing?

Yes, マメタス is recommended for those interested in wealth management but who have no investment knowledge. It offers an 'all-in-one' automated investment service, making it accessible for beginners.

What are the risks and costs associated with investing through マメタス?

Users are advised to check the risks and costs related to financial product transactions on the WealthNavi website. Specific details can be found at https://www.wealthnavi.com/rule/01.html.

How often is マメタス updated?

The latest version of マメタス is 3.1.5, last updated on March 9, 2026. Updates typically include feature enhancements and security improvements.

What devices does マメタス support?

マメタス is currently supported on iPhone devices. It is available for download for users on the iOS platform.

How can I contact support for マメタス?

You can contact support for マメタス via the inquiry form on the WealthNavi website. The support page is available at https://www.wealthnavi.com/support.