# Cleanwave vs Kombucha fermentCal

The clearest difference is iOS requirement: Cleanwave at 14.0 against Kombucha fermentCal's 17.6. 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.

Cleanwave ships an update monthly, Kombucha fermentCal every 2 weeks. The most recent releases landed on October 6, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Cleanwave | Kombucha fermentCal |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 2 weeks** |
| Monetization | Free | — |
| Size | 56 MB | 29 MB |
| Requires iOS | **14.0** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [coara OU](https://appshunter.io/developer/1494296868) | [Daniel Nesvera](https://appshunter.io/developer/1888274984) |

## What reviewers say

### Cleanwave

[App page](https://appshunter.io/ios/app/cleanwave/id1515713285)

This app promotes access to free drinking water and advocates for a plastic-free society. It encourages legislative changes for water purification, reusable bottle infrastructure, and supports local bottle factories.

**Highlights:** Access to free drinking water, Advocacy for plastic-free living, Promotes water purification investment, Encourages reusable bottle infrastructure, Supports local bottle factories

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

**In-app purchases:** none


### Kombucha fermentCal

[App page](https://appshunter.io/ios/app/kombucha-fermentcal/id6761208832)

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

**In-app purchases:** none


## Frequently asked questions

### Is Cleanwave free?

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

### Is Kombucha fermentCal free?

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

### Do Cleanwave or Kombucha fermentCal have ads?

Neither Cleanwave nor Kombucha fermentCal shows ads.

### Which is updated more often, Cleanwave or Kombucha fermentCal?

Cleanwave ships an update monthly, and Kombucha fermentCal every 2 weeks. Most recently, Cleanwave was updated on October 6, 2026 and Kombucha fermentCal on October 28, 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.*