# Fermento vs KombuVault

The clearest difference is ads: Fermento at none against KombuVault's shown. Fermento also leads on review sentiment (100% vs 83%). KombuVault's advantage is update cadence (every 2 days vs monthly). On price, in-app purchases, monetization model and device support there is nothing between them.

Both are free to download. Fermento sells 4 in-app purchases, starting at $3.99 per 7 days and KombuVault sells 3 in-app purchases, starting at $3.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Fermento ships an update monthly, KombuVault every 2 days. The most recent releases landed on October 30, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Fermento | KombuVault |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (14 ratings)](https://appshunter.io/ios/app/kombuvault/id6778629837/reviews)** |
| Number of ratings | — | **14** |
| Positive reviews | **100.0% of reviews** | 83.3% of reviews |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Monthly | **Every 2 days** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 111 MB | 72 MB |
| Requires iOS | **17.0** | 17.6 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 12+ | 4+ |
| Developer | [Drobinin Limited](https://appshunter.io/developer/1713029153) | [Petaforge Inc.](https://appshunter.io/developer/6786018763) |

## What reviewers say

### Fermento

[App page](https://appshunter.io/ios/app/fermento-fermentation-journal/id6470132496)

Track and manage all your fermentation projects, from sourdough and cheese to kombucha and pickles. Features smart timelines, custom reminders, and helpful calculators for precise results. Includes advanced logging and export options for professional use.

**Highlights:** Unlimited fermentation batches, Customizable timelines and milestones, Smart reminders for tasks, pH, salt %, and weight tracking, Culture management, HACCP decision-tree builder, Recipe scaling calculators

**Features:** macOS Compatibility, Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fermentation Tracker Unlimited | $3.99 | per 7 days |
| Culture & Probiotic Pro | $7.99 | per month |
| Fermentation Tracker Unlimited | $59.99 | per year |
| HACCP Safety Compliance Pro | $179.99 | per year |


### KombuVault

[App page](https://appshunter.io/ios/app/kombuvault/id6778629837)

Easily track your home-brewed kombucha batches from start to finish. Log key metrics, diagnose issues with guided fixes, and build a library of your favorite flavor recipes. Designed for both new and experienced brewers.

**Highlights:** F1 and F2 batch tracking, Daily brew journal, Brew diagnostics and fix guides, Flavor recipe library, Secure cloud sync

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $3.99 | per 7 days |
| Monthly Premium | $7.99 | per month |
| Annual Premium | $49.99 | per year |


## Frequently asked questions

### Is Fermento free?

Fermento is free to download, with in-app purchases available.

### Is KombuVault free?

KombuVault is free to download, with in-app purchases available.

### Do Fermento or KombuVault have ads?

KombuVault shows ads; Fermento does not.

### Which is updated more often, Fermento or KombuVault?

Fermento ships an update monthly, and KombuVault every 2 days. Most recently, Fermento was updated on October 30, 2026 and KombuVault on October 24, 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.*