# Fermentation Lab vs Kombucha fermentCal

The clearest difference is update cadence: Kombucha fermentCal at every 2 weeks against Fermentation Lab's every 5 weeks. Fermentation Lab's advantage is iOS requirement (15.1 vs 17.6). 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.

Fermentation Lab ships an update every 5 weeks, Kombucha fermentCal every 2 weeks. The most recent releases landed on September 23, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Fermentation Lab | Kombucha fermentCal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 2 weeks** |
| Size | 91 MB | 29 MB |
| Requires iOS | **15.1** | 17.6 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Antonio Lice](https://appshunter.io/developer/1888002310) | [Daniel Nesvera](https://appshunter.io/developer/1888274984) |

## What reviewers say

### Fermentation Lab

[App page](https://appshunter.io/ios/app/fermentation-lab/id6761143434)

**Features:** macOS Compatibility

**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 Fermentation Lab free?

Fermentation Lab 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 Fermentation Lab or Kombucha fermentCal have ads?

Neither Fermentation Lab nor Kombucha fermentCal shows ads.

### Which is updated more often, Fermentation Lab or Kombucha fermentCal?

Fermentation Lab ships an update every 5 weeks, and Kombucha fermentCal every 2 weeks. Most recently, Fermentation Lab was updated on September 23, 2026 and Kombucha fermentCal on September 19, 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.*