# Fermentation Lab vs Kombucha fermentCal

The clearest difference is iOS requirement: Fermentation Lab at 15.1 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.

Fermentation Lab ships an update fortnightly, Kombucha fermentCal every 2 weeks. The most recent releases landed on November 5, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Fermentation Lab | Kombucha fermentCal |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 weeks |
| Size | 84 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-ferments/id6761143434)

**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 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 fortnightly, and Kombucha fermentCal every 2 weeks. Most recently, Fermentation Lab was updated on November 5, 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.*