# KoolStock vs WaterIQ

The clearest difference is iOS requirement: KoolStock at 15.0 against WaterIQ's 17.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

KoolStock ships an update every 6 weeks, WaterIQ every 3 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | KoolStock | WaterIQ |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 3 months |
| Size | 98 MB | 51 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Sapien Technology Pty Ltd](https://appshunter.io/developer/977525978) | [DEPARTMENT OF LOCAL GOVERNMENT, WATER AND VOLUNTEERS](https://appshunter.io/developer/1627125679) |

## What reviewers say

### KoolStock

[App page](https://appshunter.io/ios/app/koolstock/id994793325)

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

**In-app purchases:** none


### WaterIQ

[App page](https://appshunter.io/ios/app/wateriq/id1633989028)

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

**In-app purchases:** none


## Frequently asked questions

### Is KoolStock free?

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

### Is WaterIQ free?

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

### Do KoolStock or WaterIQ have ads?

Neither KoolStock nor WaterIQ shows ads.

### Which is updated more often, KoolStock or WaterIQ?

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