# マメタス by WealthNavi(ウェルスナビ) vs THEO[テオ] ロボアドバイザーでおまかせ資産運用

The clearest difference is ads: マメタス by WealthNavi(ウェルスナビ) at none against THEO[テオ] ロボアドバイザーでおまかせ資産運用's shown. マメタス by WealthNavi(ウェルスナビ) also leads on ratings volume (3 vs 1). THEO[テオ] ロボアドバイザーでおまかせ資産運用's advantage is monetization model (ad-supported vs free with in-app purchases). On price, rating, review sentiment and update cadence there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for マメタス by WealthNavi(ウェルスナビ) against 5.0 for THEO[テオ] ロボアドバイザーでおまかせ資産運用. Both are backed by a comparable volume of ratings — 3 and 1 respectively. Written reviews are what separate them: 27% of マメタス by WealthNavi(ウェルスナビ)'s written reviews are positive against 24% of THEO[テオ] ロボアドバイザーでおまかせ資産運用's.

マメタス by WealthNavi(ウェルスナビ) ships an update monthly, THEO[テオ] ロボアドバイザーでおまかせ資産運用 every 3 weeks. Both last shipped on November 2, 2026.

## The numbers

| Metric | マメタス by WealthNavi(ウェルスナビ) | THEO[テオ] ロボアドバイザーでおまかせ資産運用 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (3 ratings)](https://appshunter.io/ios/app/by-wealthnavi/id1236011920/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/theo/id1259086365/reviews) |
| Number of ratings | **3** | 1 |
| Positive reviews | **27.3% of reviews** | 24.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 30 MB | 42 MB |
| Requires iOS | **16.6** | 17.6 |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [WealthNavi Inc.](https://appshunter.io/developer/1181342874) | [MONEY DESIGN Co., LTD.](https://appshunter.io/developer/1259086362) |

## What reviewers say

### マメタス by WealthNavi(ウェルスナビ)

[App page](https://appshunter.io/ios/app/by-wealthnavi/id1236011920)

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.

**Highlights:** 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

**In-app purchases:** none


### THEO[テオ] ロボアドバイザーでおまかせ資産運用

[App page](https://appshunter.io/ios/app/theo/id1259086365)

This app offers AI-powered, automated investment management services. It creates personalized portfolios using a wide range of ETFs, aiming for long-term growth and risk reduction. Ideal for those new to investing or seeking efficient, hands-off wealth management.

**Highlights:** Personalized investment portfolios, AI-driven asset management, Diversified ETF-based investments, Multiple portfolio strategies, Smart beta investment approach, Low management fees

**In-app purchases:** none


## Frequently asked questions

### Is マメタス by WealthNavi(ウェルスナビ) free?

マメタス by WealthNavi(ウェルスナビ) is free to download, with no in-app purchases.

### Is THEO[テオ] ロボアドバイザーでおまかせ資産運用 free?

THEO[テオ] ロボアドバイザーでおまかせ資産運用 is free to download, with no in-app purchases.

### Which has better reviews, マメタス by WealthNavi(ウェルスナビ) or THEO[テオ] ロボアドバイザーでおまかせ資産運用?

マメタス by WealthNavi(ウェルスナビ) and THEO[テオ] ロボアドバイザーでおまかせ資産運用 are both rated 5.0 out of 5 on the App Store, from 3 and 1 ratings respectively.

### Do マメタス by WealthNavi(ウェルスナビ) or THEO[テオ] ロボアドバイザーでおまかせ資産運用 have ads?

THEO[テオ] ロボアドバイザーでおまかせ資産運用 shows ads; マメタス by WealthNavi(ウェルスナビ) does not.

### Which is updated more often, マメタス by WealthNavi(ウェルスナビ) or THEO[テオ] ロボアドバイザーでおまかせ資産運用?

マメタス by WealthNavi(ウェルスナビ) ships an update monthly, and THEO[テオ] ロボアドバイザーでおまかせ資産運用 every 3 weeks. Most recently, マメタス by WealthNavi(ウェルスナビ) was updated on November 2, 2026 and THEO[テオ] ロボアドバイザーでおまかせ資産運用 on November 2, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*