Fermenta tracks every batch from sweet tea to the fridge. It tells you when to taste, bottle, and chill, and remembers what worked last time.
For iPhone with iOS 26 and iPad with iPadOS 26 or later
Was that day 6 or day 9?
Every batch shows its day count and its next step, in first and second fermentation.
Bottling day came and went.
Reminders tell you when to taste, bottle, and chill, right on your Lock Screen.
That batch was perfect. What did you do?
Fermenta keeps the tea, sugar, timing, and notes, so you can brew it again.
Fermenta counts the days for every batch and tells you when to taste, bottle, and chill. You still decide when a batch is ready.
Log flavor, pH, temperature, and fizz as the batch develops. Rate it at the end, then brew it again with one tap.
Compare the surface with reference photos to check whether it looks more like dry, fuzzy mold or a wet forming pellicle.
This is a guide, not a lab test. When you are still unsure at the end, treat it as mold.
Browse the kombucha guides
On iPhone, every batch is a tap away. Open iPhone Duo or use iPad, and your batches sit beside their details. With iCloud, they stay in sync.
iPhone
iPhone Duo
iPad
Fermenta Pro is a single one-time purchase. No subscription.
Free
Brew as many batches as you like, one at a time.
One-time purchase
The price is shown in the App Store before you buy.
Yes. Fermenta lets you track one active batch at a time for free, with SCOBY hotels and all reminders included. Fermenta Pro is a one-time purchase that unlocks unlimited active batches.
No. Fermenta Pro is a single purchase. You pay once and keep it.
Fermenta works on iPhone and iPad. On iPad, you see your batches and their details side by side. There is no Android version.
Yes. Your data is stored locally and the app continues to work offline. If iCloud is available, changes sync with your other devices when a connection returns.
Fermenta is a tracking tool, not a food safety or medical guide. Follow safe fermentation practices and decide whether a batch is safe to consume.
Start your first batch and Fermenta will keep count of the days.
For iPhone with iOS 26 and iPad with iPadOS 26 or later