# Hello Klean vs Smart

The clearest difference is price: Hello Klean at Free against Smart's $2.99. Smart's advantage is update cadence (weekly vs every 6 weeks). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Hello Klean is free to download; Smart costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Hello Klean ships an update every 6 weeks, Smart weekly. Both last shipped on October 30, 2026.

## The numbers

| Metric | Hello Klean | Smart |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[3.0 (1 ratings)](https://appshunter.io/ios/app/hello-klean/id6751104241/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 weeks | **Weekly** |
| Monetization | Free | — |
| Size | 14 MB | 8 MB |
| Requires iOS | 18.5 | 18.5 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Helloklean Ltd.](https://appshunter.io/developer/1833435525) | [Waqar Chaudhry](https://appshunter.io/developer/1670203257) |

## What reviewers say

### Hello Klean

[App page](https://appshunter.io/ios/app/hello-klean/id6751104241)

This app works with a special shower head to monitor filter life, water temperature, and your showering habits. It provides insights into how your routine impacts your hair and skin, offering guidance for healthier results.

**Highlights:** Filter life tracking, Heat alerts, Manage refills, Shower insights, Hair and skin insights, NFC connectivity

**In-app purchases:** none


### Smart

[App page](https://appshunter.io/ios/app/smart-pocket/id6753141793)

**In-app purchases:** none


## Frequently asked questions

### Is Hello Klean free?

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

### Is Smart free?

Smart costs $2.99, with no in-app purchases.

### Do Hello Klean or Smart have ads?

Neither Hello Klean nor Smart shows ads.

### Which is updated more often, Hello Klean or Smart?

Hello Klean ships an update every 6 weeks, and Smart weekly. Most recently, Hello Klean was updated on October 30, 2026 and Smart on October 30, 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.*