Creative coffee roasting is an art. The key lies in leveraging both your triumphs and mistakes, and visualizing how all of your data works together to affect the final taste. Designed for specialty and prosumer roasters alike, Roastmaster paints the bigger picture. It enhances and speeds your workflow, compounding your achievements on your way to that consistently perfect cup!

Learn from the past and build a future:
Set a roadmap from any profile or roast with just a tap
Track any number of roast curves: control or temperature
Target, inspect, and monitor data in the interactive analyzer
Stay on course with delta curves, level indicators, and temperature projections
Never miss a milestone with alarms, set-point alerts, and temperature trigger notifications
Save any roast as a profile, and build a custom library tailored to style or bean
View interactive roast log reports to compare metrics like drying time, development percent, moisture loss, and many others
Create roaster maintenance schedules to be reminded when individual tasks are due, and log details like service time and costs

Keep your green bean inventory in sync with your actual stock — automatically:
Beans or blends – let Roastmaster do the bean counting for you!
Set order reminders to alert you of low inventory
Record details like country, trade, processing, and more
Track lot details such as age, cost, moisture, Q Score, and more
Audit inventory and lot shipments with advanced reporting

Get creative concocting, tasting, and perfecting your signature blends:
Blend green beans or roasts by weight or percentage
Create "snapshot" experiments and track your results
Roasting a blend? Let Roastmaster calculate the green weights

Rate a morning pot of drip coffee, or score a professional cupping session:
Record extraction time, brew ratio, grind settings, and more
Score traditional attributes like aroma, body, and acidity with multiple cupping styles
Enter scores easily with interactive spider graphs
Visualize how cupping scores relate to all aspects of your workflow

The Data Logging in-app purchase allows you to connect one or more thermocouples to automate your roasts. Roastmaster displays and records real-time temperature readings from each probe. When paired with Roastmaster’s other automation features, roasting becomes truly hands-free!

Reports, labels, sharing – if it’s aimed at great tasting coffee, you can bet it’s in there or we’re working on it! For a complete guide and walkthrough, please visit:

What’s New

Version 11.0.0

iOS 11 support
Ability to hide master split view
Automatic Data Logging enhancements:
• Santoker Bluetooth LE roaster
• Phidgets Library 22 and VINT devices
• Phidgets RTD probes (VINT)
• RBP Bluetooth LE protocol for DIY hardware
Interface Enhancements
Bug fixes

IMPORTANT: Phidgets users MUST upgrade to Library 22 in order to use Roastmaster 11

Ratings and Reviews

4.7 out of 5
13 Ratings

13 Ratings

hannibal87 ,

Great, well designed, modern app

I avoided this app for a long time because I *wrongly* thought it was dead and from the iOS 6 area of skeuomorphism. Screenshots on their website are dated, the roaster graphic threw me, along with infrequent updates.

I finally bought it today on the verge of writing my own app, and oh boy am I glad I did! I’ve really been missing out for a long time. It’s well thought out, feature rich, and works very well. If you home roast, and don’t want to use Artisan, this app is a must have. I have a Behmor, and it has custom profiles just for that which is great and niche because I can’t easily put probes in there and the automatic modes are already profiled.

Marginal Man ,

Amazing roasting app!

I tried all the major roasting software apps/programs. I used Cropster and Artisan extensively and came back to Roastmaster. The scope is pretty much one of the best you can use and it has all the features you could possibly want!
I just hope they push an update before apple makes it redundant.

pj47tech ,

Overall good app

I’m new to roasting but I started using this app to document my progress and results. Quite satisfied with its capability. Since I’m using a Behmor 1600+ I don’t have an easy way to log bean temperatures but I can log the basic B reading for comparison purposes. Help files are full of great documentation.

If I had a wish list it would be for two items - ability to store a low to medium resolution image with a roast, and the ability to make a blend from existing roasts.


Rainfrog, Inc.
96.1 MB

Requires iOS 9.0 or later. Compatible with iPhone, iPad, and iPod touch.


English, French, Korean, Simplified Chinese, Spanish

Age Rating
In-App Purchases
  1. Data Logging $14.99


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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