# Water Note vs HydroRing

The clearest difference is ads: HydroRing at none against Water Note's shown. Water Note's advantage is update cadence (weekly vs every 6 weeks) and iOS requirement (13.0 vs 16.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Water Note sells 1 in-app purchase, starting at $1.99 per month and HydroRing sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Water Note ships an update weekly, HydroRing every 6 weeks. The most recent releases landed on September 28, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Water Note | HydroRing |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Weekly** | Every 6 weeks |
| Size | 42 MB | 1 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [TAKERU YAMASHITA](https://appshunter.io/developer/1868149381) | [torankirite](https://appshunter.io/developer/1883564850) |

## What reviewers say

### Water Note

[App page](https://appshunter.io/ios/app/water-note-hydration-tracker/id6757661748)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Plan | $1.99 | per month |


### HydroRing

[App page](https://appshunter.io/ios/app/hydroring-water-tracker/id6760393366)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| HydroRing Premium | $3.99 | one-time |


## Frequently asked questions

### Is Water Note free?

Water Note is free to download, with in-app purchases available.

### Is HydroRing free?

HydroRing is free to download, with in-app purchases available.

### Do Water Note or HydroRing have ads?

Water Note shows ads; HydroRing does not.

### Which is updated more often, Water Note or HydroRing?

Water Note ships an update weekly, and HydroRing every 6 weeks. Most recently, Water Note was updated on September 28, 2026 and HydroRing on October 1, 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.*