# マメタス by WealthNavi(ウェルスナビ) vs echari決済

The clearest difference is iOS requirement: echari決済 at 13.0 against マメタス by WealthNavi(ウェルスナビ)'s 16.6. On price, update cadence, ads and in-app purchases there is nothing between them.

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

マメタス by WealthNavi(ウェルスナビ) ships an update monthly, echari決済 every 6 weeks. The most recent releases landed on October 20, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | マメタス by WealthNavi(ウェルスナビ) | echari決済 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (3 ratings)](https://appshunter.io/ios/app/by-wealthnavi/id1236011920/reviews)** | — |
| Number of ratings | **3** | — |
| Positive reviews | 27.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 30 MB | 22 MB |
| Requires iOS | 16.6 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [WealthNavi Inc.](https://appshunter.io/developer/1181342874) | [TLMJ Inc.](https://appshunter.io/developer/1619235243) |

## 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


### echari決済

[App page](https://appshunter.io/ios/app/echari/id1619235599)

**Features:** macOS Compatibility

**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 echari決済 free?

echari決済 is free to download, with no in-app purchases.

### Do マメタス by WealthNavi(ウェルスナビ) or echari決済 have ads?

Neither マメタス by WealthNavi(ウェルスナビ) nor echari決済 shows ads.

### Which is updated more often, マメタス by WealthNavi(ウェルスナビ) or echari決済?

マメタス by WealthNavi(ウェルスナビ) ships an update monthly, and echari決済 every 6 weeks. Most recently, マメタス by WealthNavi(ウェルスナビ) was updated on October 20, 2026 and echari決済 on October 12, 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.*