Proof Meister is your guide through every step of distilling — for spirits and liqueurs. Measure alcohol content and proof in seconds, master your cuts, and bottle at exactly the strength you want.
Connect your EasyDens density meter over Bluetooth and read ABV and proof in seconds — or add readings by hand. No device yet? You can still log, organize, and export measurements, then connect one whenever you're ready.
RESULTS WITH CONTEXT
Choose your style — gin, vodka, whisky, grappa — and Proof Meister tells you what your reading means:
- See whether your strength lands in the expected range for what you're making
- Read ABV in %v/v and %w/w, plus Proof US and Proof UK
- Confirm ABV at bottling down to the decimal
MASTER YOUR CUTS
- Track foreshots, heads, hearts, and tails as you run the still
- Spot the cleanest point to switch fractions for a cleaner, smoother spirit
- Log every reading against the moment it was taken
SKIP THE MATH
- Automatic temperature compensation — values are already corrected, no proof or correction tables
- Every scale from a single density reading — switch between ABV and proof instantly
MEASUREMENT UNITS
- Alcohol by volume (%v/v, plus at 15 °C and 20 °C), Alcohol by weight (%w/w), Proof US (60 °F), Proof UK (20 °C), Density (g/cm³), and Temperature in °C or °F.
A HISTORY YOU OWN
- Organize runs into custom batches with notes and timestamps
- Keep 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 batches 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.
For density and concentration you need an EasyDens by Anton Paar.
Learn more: https://www.get-tony.com
SUPPORT
Visit https://www.get-tony.com/ or 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.
Hi, Thank you very much for your review! We appreciate your feedback! All the best!
Great Product
Thereseny
Amazing and easy to use
Developer Response
Hi, Thank you very much for your review! We appreciate your feedback! All the best!
Taking feature away
blazemontana1
Please add Brix back to proof master. It was taken away with latest update.
Developer Response
Thank you for your feedback. Brix was added back again.
Doesn’t work without subscription and buying another device
Distillery53423455
Forces you to buy a subscription and the smart ref to work
Developer Response
The SmartRef works fully without any subscription. Please feel free to reach out to us at support@my-smartref.com so we can clarify any misunderstanding and assist you further.Thank you.
- 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:
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
72.9 MB
Category
Utilities
Compatibility
Requires iOS 18.0 or later.
iPhone Requires iOS 18.0 or later.
Mac Requires macOS 13.3 or later and a Mac with Apple M1 chip or later.
