Coffee Meister is your ultimate tool for dialing in the perfect extraction — for espresso, filter, and immersion brews alike. Measure strength, calculate extraction, and say goodbye to guesswork.
Connect your SmartRef refractometer over Bluetooth Low Energy and read coffee %TDS in seconds — or add readings by hand. Sensory tasting tells you what you like; a TDS measurement tells you why, and how to repeat it. No device yet? You can still log, organize, and export measurements, then connect one whenever you're ready.
RESULTS WITH CONTEXT
Pick your brew method and Coffee Meister sets the right TDS target, then tells you what your reading means:
- See what's normal at a glance: espresso around 8–12 %TDS, filter 1.2–1.5 %TDS, French press 1.5–1.7 %TDS
- Know instantly if you're under- or over-extracted — aim for 18–22 % extraction yield (below tastes sour, above turns bitter)
EXTRACTION CALCULATOR FOR EVERY METHOD
Enter your dose and beverage weight to calculate extraction percentage from any TDS reading, with three modes matched to how your coffee brews:
- Percolation — espresso, V60, Kalita Wave, Chemex, moka pot
- Immersion — cupping and French press
- Mixed phase — AeroPress, siphon, clever dripper
SKIP THE MATH
- Two ways to read TDS: fixed (%TDS) or custom (%TDS custom) with your own conversion factor
- Automatic temperature compensation — values are already corrected, no tables needed
- Also reports Brix (°Bx), refractive index (nD, nD @20 °C), and density (g/cm³)
A DATA HISTORY YOU OWN
- Organize readings into custom logs with notes and timestamps
- Keep a brew journal, per-reading notes, and project notes for your recipes
- Find anything instantly with full-text search
- Export to PDF for clean reports or CSV for spreadsheets
- Long-press any result to copy or share it
ONE ACCOUNT, EVERY DEVICE
A free Meister Cloud account syncs your logs across iPhone, iPad, Apple Watch, Apple Silicon Mac, Apple Vision Pro, and the web — one account for the whole Meister app family. Without an account, your data stays local on your device.
Whether you're a home barista or a coffee professional, Coffee Meister helps you craft consistently exceptional coffee. Free to download, with an optional subscription for advanced features.
For %TDS and refractive index you need a SmartRef; for density, an EasyDens
Learn more: https://www.get-tony.com/
SUPPORT
Contact us at support@get-tony.com
PRIVACY POLICY
https://www.get-tony.com/policies/privacy-policy
TERMS
https://www.get-tony.com/policies/legal-notice
---
Auto-Renewable Subscription Terms:
Subscriptions are billed monthly or annually at the rate selected depending on the subscription plan.
The price corresponds to the same price segment, which is set in the "Apple's App Store Matrix" for other currencies.
* Your free trial subscription will automatically renew to a paid subscription unless auto-renew is turned off at least 24 hours before the end of the free trial period.
* Please note: any unused portion of a free trial period (if offered) will be forfeited when you purchase a premium subscription during the free trial period.
* You can cancel a free trial or subscription anytime by turning off auto-renewal through your iTunes account settings. This must be done 24 hours before the end of a free trial or subscription period to avoid being charged. The cancellation will take effect the day after the last day of the current subscription period, and you will be downgraded to the free service.
* Account will be charged for renewal within 24-hours before the end of the current period, and identify the cost of the renewal.
Ratings & Reviews
5.0
out of 5
5 Ratings
- Added new precise measurement mode
- Improved device settings and diagnostics
- Improved Measure Insights and reports
To improve our app for you, we regularly bring updates to the App Store. If you enjoy it, would you mind taking a moment to write a review on the App Store? We’d greatly appreciate it.
Version 6.6.2
The developer, Anton Paar ConsumerTec GmbH, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
Contact Info
User Content
Identifiers
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
User Content
Usage Data
Diagnostics
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
Seller
Anton Paar ConsumerTec GmbH
Size
72.3 MB
Category
Food & Drink
Compatibility
Requires iOS 18.0 or later.
iPhone Requires iOS 18.0 or later.
Mac Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
