# Nebulizing Diffuser vs Pool Chemistry

The clearest difference is in-app purchases: Nebulizing Diffuser at none against Pool Chemistry's 3. Nebulizing Diffuser also leads on iOS requirement (13.0 vs 18). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Pool Chemistry sells 3 in-app purchases, starting at $4.99 per month. Nebulizing Diffuser asks for nothing beyond the download.

Nebulizing Diffuser ships an update every 2 months, Pool Chemistry monthly. The most recent releases landed on September 15, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | Nebulizing Diffuser | Pool Chemistry |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 22 MB | 7 MB |
| Requires iOS | **13.0** | 18 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Herbal Spirit Co., Ltd.](https://appshunter.io/developer/1397339287) | [Karol Jaworski](https://appshunter.io/developer/1799974477) |

## What reviewers say

### Nebulizing Diffuser

[App page](https://appshunter.io/ios/app/nebulizing-diffuser/id6740805162)

**Features:** macOS Compatibility

**In-app purchases:** none


### Pool Chemistry

[App page](https://appshunter.io/ios/app/pool-chemistry-chlor/id6759573566)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chlor Pro Monthly | $4.99 | per month |
| Chlor Pro Yearly | $39.99 | per year |
| Chlor Pro Yearly Promo | $39.99 | per year |


## Frequently asked questions

### Is Nebulizing Diffuser free?

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

### Is Pool Chemistry free?

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

### Do Nebulizing Diffuser or Pool Chemistry have ads?

Neither Nebulizing Diffuser nor Pool Chemistry shows ads.

### Which is updated more often, Nebulizing Diffuser or Pool Chemistry?

Nebulizing Diffuser ships an update every 2 months, and Pool Chemistry monthly. Most recently, Nebulizing Diffuser was updated on September 15, 2026 and Pool Chemistry on September 8, 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.*