# シンプル水分補給管理 WaterManager vs withday

The clearest difference is ads: withday at none against シンプル水分補給管理 WaterManager's shown. withday also leads on update cadence (every 2 weeks vs every 2 months). シンプル水分補給管理 WaterManager's advantage is iOS requirement (15.4 vs 18.0). On price, 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.

シンプル水分補給管理 WaterManager ships an update every 2 months, withday every 2 weeks. The most recent releases landed on September 12, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | シンプル水分補給管理 WaterManager | withday |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 19 MB | 108 MB |
| Requires iOS | **15.4** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [masaaki genno](https://appshunter.io/developer/1611455396) | [RYOSUKE HIRAMATSU](https://appshunter.io/developer/616750780) |

## What reviewers say

### シンプル水分補給管理 WaterManager

[App page](https://appshunter.io/ios/app/watermanager/id1619090832)

**Features:** macOS Compatibility

**In-app purchases:** none


### withday

[App page](https://appshunter.io/ios/app/withday/id6756597053)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is シンプル水分補給管理 WaterManager free?

シンプル水分補給管理 WaterManager is free to download, with no in-app purchases.

### Is withday free?

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

### Do シンプル水分補給管理 WaterManager or withday have ads?

シンプル水分補給管理 WaterManager shows ads; withday does not.

### Which is updated more often, シンプル水分補給管理 WaterManager or withday?

シンプル水分補給管理 WaterManager ships an update every 2 months, and withday every 2 weeks. Most recently, シンプル水分補給管理 WaterManager was updated on September 12, 2026 and withday on September 11, 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.*