# BOLLbox vs Smart Chlorinator

The clearest difference is update cadence: Smart Chlorinator at every 6 days against BOLLbox's every 7 months. Smart Chlorinator also leads on iOS requirement (12.0 vs 15.6). On price, ads, in-app purchases and device support there is nothing between them.

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

BOLLbox ships an update every 7 months, Smart Chlorinator every 6 days. The most recent releases landed on September 8, 2026 and May 17, 2026 respectively.

## The numbers

| Metric | BOLLbox | Smart Chlorinator |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 6 days** |
| Size | 29 MB | 30 MB |
| Requires iOS | 15.6 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [BOLL & KIRCH Filterbau GmbH](https://appshunter.io/developer/1673939850) | [FOSHAN SUNDREAM ELECTRONICS CO.LTD](https://appshunter.io/developer/1703947862) |

## What reviewers say

### BOLLbox

[App page](https://appshunter.io/ios/app/bollbox/id6445814925)

**Features:** macOS Compatibility

**In-app purchases:** none


### Smart Chlorinator

[App page](https://appshunter.io/ios/app/smart-chlorinator/id6469689129)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is BOLLbox free?

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

### Is Smart Chlorinator free?

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

### Do BOLLbox or Smart Chlorinator have ads?

Neither BOLLbox nor Smart Chlorinator shows ads.

### Which is updated more often, BOLLbox or Smart Chlorinator?

BOLLbox ships an update every 7 months, and Smart Chlorinator every 6 days. Most recently, BOLLbox was updated on September 8, 2026 and Smart Chlorinator on May 17, 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.*