Fermentation Journal vs KimchiLab
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Fermentation Journal
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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/
KimchiLab
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For many, Kimjang—the traditional Korean culture of making Kimchi—is often performed by blindly following inherited steps without understanding the underlying science. My app visualizes the invisible Science behind Kimjang and lets users manipulate key variables at each step to see how they affect the fermentation in real-time. By transforming the science and daunting ritual into an interactive, visual journey, it lowers the barrier to entry and turns confusing recipe into a predictable scientific process. Instead of following a rigid manual, I want users to have the confidence to converse with this living tradition.
Screenshots
Verdict
The clearest difference is in-app purchases: KimchiLab at none against Fermentation Journal's 5. Fermentation Journal's advantage is update cadence (monthly vs every 2 months). On price, ads, device support and iOS requirement 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. KimchiLab asks for nothing beyond the download.
Fermentation Journal ships an update monthly, KimchiLab every 2 months. The most recent releases landed on September 10, 2026 and September 15, 2026 respectively.
| Parameter | Fermentation Journal | KimchiLab |
|---|---|---|
| Price | Free | Free |
| Update frequency | Monthly — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 105 MB | 15 MB |
| Age rating | 12+ | 4+ |
| Developer | Drobinin Limited | Yoojin Jang |
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
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- HACCP Safety Compliance Pro$179.991 Year
- Lifetime (Personal)$199.99
KimchiLab
No in-app purchases









