# IAU Stone vs Revive Hydration

IAU Stone and Revive Hydration are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | IAU Stone | Revive Hydration |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | — |
| Size | 86 MB | 4 MB |
| Requires iOS | **13.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [国际尿石症联盟](https://appshunter.io/developer/6798177061) | [Aminova Health LLC](https://appshunter.io/developer/6781031337) |

## What reviewers say

### IAU Stone

[App page](https://appshunter.io/ios/app/iau-stone/id6798177059)

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

**In-app purchases:** none


### Revive Hydration

[App page](https://appshunter.io/ios/app/revive-hydration/id6804513735)

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

**In-app purchases:** none


## Frequently asked questions

### Is IAU Stone free?

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

### Is Revive Hydration free?

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

### Do IAU Stone or Revive Hydration have ads?

Neither IAU Stone nor Revive Hydration shows ads.

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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.*