iOS App · Home Brewing Companion
Brewmosa guides you through both fermentation cycles — logging pH, taste, and carbonation daily, diagnosing off-flavors before they ruin the batch, and saving your best combinations as repeatable recipes.
Why Brewmosa exists
“First-batch anxiety is a rite of passage.
It shouldn't last past day three.”
Most home brewers learn by killing a few batches first. The forums tell you to trust your nose, but they don't tell you what day-9 pH 3.2 smells like when you're standing in your kitchen at midnight wondering if you've just made a very expensive jar of vinegar. Brewmosa doesn't replace the craft. It just removes the guesswork that gets in the way of it.
01 — Daily Logging
Log pH, sweetness, sourness, and carbonation in thirty seconds. Watch your brew's arc across the full fermentation window. No more guessing which day was the turning point — the trend line shows you exactly when things shifted.
02 — AI Diagnosis
Describe what's wrong — over-carbonated, vinegar-sharp, flat as water — and get a specific fix, not a forum rabbit hole. AI-guided diagnostics that know your batch history and suggest interventions you can actually make today.
03 — Recipe Archive
When a flavor combination clicks, lock it in as a recipe. Volume, sugar ratio, F2 fruit additions, timing — saved exactly as it was on the batch that worked. No more trusting memory for what made batch 7 the best one you've ever made.
04 — Batch Setup
Set your vessel volume, sugar type, SCOBY weight, and target pH. Brewmosa builds a personalized timeline and starts your daily check-in prompts at exactly the right interval — not one-size-fits-all day counts, but your brew's actual fermentation window.
9–21+
days guided, per batch
F1 and F2 tracked separately
< 30s
daily log, every time
pH · taste · carbonation
100%
batch history preserved
iCloud backup, no account needed
From brewers
“I dumped my first batch on day 14 because I had no idea what it was supposed to taste like. Brewmosa would have saved it — and the $40 of organic tea.”
“Two years of batch notes in a spreadsheet. After one month with Brewmosa my flavor consistency went from accidental to intentional. The recipe archive is everything.”
“The AI diagnosis caught a low-pH spiral on day 6 that I would have missed for another week. The batch was still salvageable. That alone was worth it.”
Questions
None at all. Brewmosa is built for people who just got their first SCOBY and aren't sure what day 7 is supposed to smell like. The app walks you through every stage of both fermentation cycles with prompts that assume nothing.
pH (with a visual trend line), taste notes (sweetness, sourness, astringency), carbonation level, color, and free-form observations. It tracks both F1 and F2 independently, with different logging prompts optimized for each stage.
You describe what's wrong — 'too sour on day 12', 'completely flat after bottling', 'tastes like vinegar' — and Brewmosa cross-references your pH log, temperature history, and SCOBY age to give you a specific, actionable fix rather than a generic answer.
Yes. Most home brewers run two to four batches in parallel at different stages. Brewmosa shows all active batches on one screen with their current day, phase, and last logged measurement so nothing gets lost.
All batch data and recipes are saved to your iCloud account. Reinstall on any iPhone and your full history restores automatically. No account creation required.
Free on the App Store
Download Brewmosa for free and start your first batch with daily guidance from day one through final bottle.
Download on the App StoreiOS 17+ · Free · No account required
The Brew Log
Starting your first kombucha batch feels equal parts exciting and nerve-wracking — one wrong move and you're convinced you've ruined everything. This guide walks you through every step of both fermentation cycles, what to actually watch for, and how to know your brew is healthy (not just hopeful). First-batch anxiety? Consider it cured.
A too-sweet kombucha means fermentation stalled; a vinegary bomb means it went too far — and flat F2 is its own frustrating beast. Each problem has a specific, diagnosable cause and a straightforward fix, whether that's adjusting brew temperature, fermentation time, or your sugar-to-tea ratio. Here's a symptom-by-symptom breakdown so you never pour a batch down the drain again.
Ginger-lemon is just the beginning — experienced home brewers are bottling everything from lavender-blueberry to turmeric-mango-black-pepper and getting consistent, repeatable results. This post covers ten tested flavor pairings, the fruit-to-juice ratios that nail carbonation without over-pressuring your bottles, and how to log each experiment so you can recreate your best batch every time. Your flavor notebook starts here.
The difference between a great batch and a mediocre one usually comes down to a handful of daily measurements most brewers skip. Tracking pH strips (or a digital meter), taste notes, and carbonation pressure at the same time each day gives you a data trail that makes every future batch better than the last. Here's what to measure, when to measure it, and what the numbers actually mean for your brew.
A sticky note on the jar works for your first batch — but once you're running two vessels, experimenting with F2 flavors, and trying to remember what made batch #7 so good, you need a real system. We compare the three approaches home brewers actually use, with honest trade-offs on setup time, flexibility, and the ability to diagnose problems fast. Spoiler: one method makes it dramatically easier to save your best recipes.