# Hey! Hydrate! vs AbsolutSweat

The clearest difference is price: AbsolutSweat at Free against Hey! Hydrate!'s $0.99. AbsolutSweat also leads on iOS requirement (15.6 vs 17.6). On update cadence, ads, in-app purchases and device support there is nothing between them.

AbsolutSweat is free to download; Hey! Hydrate! costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Hey! Hydrate! ships an update every 9 days, AbsolutSweat fortnightly. The most recent releases landed on September 9, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Hey! Hydrate! | AbsolutSweat |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Fortnightly |
| Size | 1 MB | 42 MB |
| Requires iOS | 17.6 | **15.6** |
| Devices | iPhone, Apple Watch | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nifty Tree Studios](https://appshunter.io/developer/1502380350) | [Shenzhen Refresh Biosensing Technology Co., Ltd.](https://appshunter.io/developer/1405391433) |

## What reviewers say

### Hey! Hydrate!

[App page](https://appshunter.io/ios/app/hey-hydrate/id1600285038)

**In-app purchases:** none


### AbsolutSweat

[App page](https://appshunter.io/ios/app/absolutsweat/id6443573387)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Hey! Hydrate! free?

Hey! Hydrate! costs $0.99, with no in-app purchases.

### Is AbsolutSweat free?

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

### Do Hey! Hydrate! or AbsolutSweat have ads?

Neither Hey! Hydrate! nor AbsolutSweat shows ads.

### Which is updated more often, Hey! Hydrate! or AbsolutSweat?

Hey! Hydrate! ships an update every 9 days, and AbsolutSweat fortnightly. Most recently, Hey! Hydrate! was updated on September 9, 2026 and AbsolutSweat on September 20, 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.*