# HydraFlow vs WaterPaw

The clearest difference is in-app purchases: HydraFlow at none against WaterPaw's 3. WaterPaw's advantage is ads (none vs shown). On price, update cadence, device support and iOS requirement there is nothing between them.

Both are free to download. WaterPaw sells 3 in-app purchases, starting at $2.99 per month. HydraFlow asks for nothing beyond the download.

HydraFlow ships an update every 3 months, WaterPaw every 6 weeks. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | HydraFlow | WaterPaw |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 6 weeks** |
| Size | 5 MB | 81 MB |
| Requires iOS | 17.0 | **16.4** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [SADIK SAZDAGI](https://appshunter.io/developer/1883520486) | [Vladislav Siumbeli](https://appshunter.io/developer/1830282251) |

## What reviewers say

### HydraFlow

[App page](https://appshunter.io/ios/app/hydraflow-water-tracker/id6760320407)

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

**In-app purchases:** none


### WaterPaw

[App page](https://appshunter.io/ios/app/waterpaw-hydration-tracker/id6769810472)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $2.99 | per month |
| Annual | $24.99 | per year |
| Lifetime | $49.99 | one-time |


## Frequently asked questions

### Is HydraFlow free?

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

### Is WaterPaw free?

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

### Do HydraFlow or WaterPaw have ads?

HydraFlow shows ads; WaterPaw does not.

### Which is updated more often, HydraFlow or WaterPaw?

HydraFlow ships an update every 3 months, and WaterPaw every 6 weeks. Most recently, HydraFlow was updated on October 24, 2026 and WaterPaw on October 25, 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.*