Fermentation Journal vs Kombucha Keeper
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fermentation Journal
Read full descriptionHide full description
Fermento keeps pickles, sourdough, cheeses, kombucha, charcuterie and more on schedule with smart timelines, reminders, calculators and exportable logs—for beginners and pros. Projects & timelines - Unlimited batches with custom milestones and photo notes - pH, salt %, weight and observations—timestamped in one place - Smart reminders for feeds, flips, checks and cures Culture management - Starters, SCOBY hotels and kefir grains—health, feeds and lineage together HACCP (for pros) - Decision-tree builder for hazards and CCPs - Monitoring/verification logs with corrective actions - Export tidy PDFs for audits and compliance Calculators & scaling - Hydration, salt %, inoculation ratios and timing helpers - Instant scaling and saved methods Insights - Compare batches, spot trends and review pH/tempo curves - Equipment notes and calibration history (keep sensors honest) Why Fermento? Made by fermentation obsessives. Private, focused and practical—whether it's your first kimchi or a full curing chamber. Terms of Use: https://drobinin.com/apps/terms/fermento/
Kombucha Keeper
Read full descriptionHide full description
Kombucha Keeper helps you keep track of your Kombucha batches and notifies you when it might be ready.
Screenshots
Verdict
The clearest difference is in-app purchases: Kombucha Keeper at none against Fermentation Journal's 5. Kombucha Keeper also leads on iOS requirement (15.1 vs 17.0). Fermentation Journal's advantage is update cadence (monthly vs every 2 months). On price, ads and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Fermentation Journal sells 5 in-app purchases, starting at $3.99 per 7 days. Kombucha Keeper asks for nothing beyond the download.
Fermentation Journal ships an update monthly, Kombucha Keeper every 2 months. The most recent releases landed on September 10, 2026 and September 8, 2026 respectively.
| Parameter | Fermentation Journal | Kombucha Keeper |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.1 — better |
| Further details — not scored | ||
| Size | 105 MB | 23 MB |
| Age rating | 12+ | 4+ |
| Developer | Drobinin Limited | Wesley Dudok van Heel |
In-app purchases
Fermentation Journal
- Starter Culture Pro Weekly$3.997 Days
- Culture & Probiotic Pro$7.991 Month
- Culture & Probiotic Pro3 Days trial$59.991 Year
Show 1 moreShow fewer
- HACCP Safety Compliance Pro$179.991 Year
- Lifetime (Personal)$199.99
Kombucha Keeper
No in-app purchases
Questions
Is Fermentation Journal free?
Is Kombucha Keeper free?
Do Fermentation Journal or Kombucha Keeper have ads?
Which is updated more often, Fermentation Journal or Kombucha Keeper?
Other comparisons















