# Ristoo(老板端) vs Ewater

The clearest difference is update cadence: Ewater at every 2 months against Ristoo(老板端)'s every 25 months. Ristoo(老板端)'s advantage is iOS requirement (9.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

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

Ristoo(老板端) ships an update every 25 months, Ewater every 2 months. The most recent releases landed on October 5, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Ristoo(老板端) | Ewater |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 25 months | **Every 2 months** |
| Size | 14 MB | 66 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [QIANLE HUANG](https://appshunter.io/developer/1482035040) | [红玲 车](https://appshunter.io/developer/1764656419) |

## What reviewers say

### Ristoo(老板端)

[App page](https://appshunter.io/ios/app/ristoo/id1534710463)

**Features:** macOS Compatibility

**In-app purchases:** none


### Ewater

[App page](https://appshunter.io/ios/app/ewater/id1616460455)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Ristoo(老板端) free?

Ristoo(老板端) is free to download, with no in-app purchases.

### Is Ewater free?

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

### Do Ristoo(老板端) or Ewater have ads?

Neither Ristoo(老板端) nor Ewater shows ads.

### Which is updated more often, Ristoo(老板端) or Ewater?

Ristoo(老板端) ships an update every 25 months, and Ewater every 2 months. Most recently, Ristoo(老板端) was updated on October 5, 2026 and Ewater on October 15, 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.*