iOS Kombucha Companion
Brewcha catches it first.
Log pH readings, score your SCOBY, track every batch. The iOS companion that turns kombucha intuition into data you can actually use.
Free beta · iOS 16+ · No spam, ever
3.1
target pH for tart F1
72°F
optimal ferment temp
7–14d
first fermentation window
Active Batch
Ginger Lemon #4
Day 12
Fermenting ●
pH Over Time
3.1 today
SCOBY Health
Excellent5 indicators · last updated 2h ago
Next Step
Taste test — target pH 3.0–3.2 ✓
Recent Log
10:14 AM
pH 3.1 · taste: sharp lemon
Yesterday
Removed foam layer, looks clean
The familiar wreckage
You've poured a whole batch down the drain.
pH hit 2.6 and you didn't know until it smelled like vinegar and tasted worse. No record of when it turned.
Your SCOBY went gray and you talked yourself out of it.
Told yourself it was just tea tannins. Used it anyway. The batch was murky and flat and you threw it away.
The good batch happened once and you can't replicate it.
You didn't write anything down. No ratios, no temp, no ferment time. That ginger lemon lived exactly once.
Why Brewcha exists
Kombucha rewards attention. The brewers who get consistent results aren't more talented — they write things down. Brewcha makes the writing-down part effortless, so the attention part can be the point.
— The Brewcha team
What's inside
Log readings with timestamps, spot the curve flattening before it stalls, and see which batches hit your personal sweet spot. Seven days of history on one screen.
Fermentation curve · Trend alerts · Sweet-spot memory
Score five observable indicators — color, texture, thickness, film integrity, and aroma — on every check. Brewcha tracks the pattern and flags deterioration before it tanks a batch.
5-indicator scoring · Check history · Anomaly alerts
Store your tea ratios, starter volumes, and F2 flavors. Each batch links back to its recipe so you know exactly what made the best one.
Recipe library · Batch linking · Variation notes
Set your ambient temp target and let Brewcha adjust the expected fermentation window. When conditions change, the schedule shifts with them.
Temp-adjusted timers · Stage reminders · Environment log
The routine
01
Open Brewcha, enter today's number, and drop a note if anything looked or smelled unusual. Takes 90 seconds.
02
Score the five indicators. Brewcha flags any change from your baseline and tells you whether to act or just watch.
03
Brewcha updates your stage, adjusts the timeline if temp changed, and queues your next reminder. Done.
Beta brewers
“I lost four batches to over-fermentation before Brewcha. Now I catch the pH dip at 3.2 every time and pull it right on schedule.”
Marisol V.
Home brewer, 3 years
47 batches logged
“The SCOBY health scores convinced me to retire a starter I'd been nursing for two years. New one from a friend, completely different results.”
Derek W.
Fermentation hobbyist
28 batches logged
“I brew six flavors in rotation. Without batch tracking I was basically guessing which week which jar was in. Not anymore.”
Priya N.
Weekly brewer
91 batches logged
Common questions
Early access
Join the Brewcha waitlist and get early access when we launch TestFlight beta. Free to start. No card required.
iOS 16+ · Free beta · No spam
The Culture Club
Starting your kombucha journey can feel overwhelming — ratios, pH levels, fermentation times, and mysterious SCOBY hotels. This guide breaks every stage down into simple, trackable steps so your first batch is a success, not a science experiment gone wrong. Whether you're brewing in a mason jar or a dedicated vessel, we've got you covered.
Nailing your kombucha's fermentation window comes down to two variables most beginners eyeball: pH and temperature. Learn how logging these readings inside a dedicated brewing app eliminates guesswork, prevents over-fermentation, and helps you replicate your best batches every single time. We'll walk through exactly what to track, when to track it, and what the numbers mean.
Second fermentation is where home-brewing gets genuinely fun — it's your chance to carbonate, flavor, and personalize every bottle. From classic ginger-lemon to unexpected hibiscus-cardamom, we've rounded up 10 tested flavor pairings, with exact fruit, juice, and spice ratios so you can log them straight into your brew tracker. Say goodbye to flat, one-note booch.
Home brewers are split on how to track their batches — some swear by a dog-eared notebook, others live in Google Sheets, and a growing number are switching to dedicated apps. We compare all three methods across ease of use, data accuracy, recipe replication, and long-term brew history so you can choose the system that actually fits your brewing habit.
A stressed or contaminated SCOBY can derail weeks of brewing — but most problems are completely salvageable if you catch them early. We cover seven red flags, from unusual mold colors to a sinking SCOBY, explain the science behind each issue, and give you a clear fix so you can get back to brewing confidently. Logging your batches makes spotting these patterns even easier.