By Rainfrog, Inc.

  • Category: Food & Drink
  • Release Date: 2010-06-04
  • Current Version: 11.0.0
  • Adult Rating: 4+
  • File Size: 91.62 MB
  • Developer: Rainfrog, Inc.
  • Compatibility: Android, iOS 9.0
Score: 4.5
From 62 Ratings


ACHIEVE THE PERFECT CUP – CONSISTENTLY 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! ROAST 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 BEANS 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 BLENDS 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 CUPPINGS 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 LINK TO THERMOCOUPLES (OPTIONAL) 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! MUCH, MUCH MORE 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:



  • Retired

    By Bats & Crows
    I fully agree that both the app and Danny are extremely helpful. It is really comprehensive in covering so many aspects of roasting coffee. But there is one feature that really brought me back after a year or so of using it, then a couple of years of not using it. It now generates, DURING A ROAST, a curve of any reading or setting that one wishes to time plot. In other words, at any desired moments, one can enter data that are read from any source, and the data will be graphed vs time. That is great for observing the progress of, for instance, beand mass temperature. (But you could also use it to generate a time plot of the outdoor temperature, if you so wished, though I haven't checked for the upper time limit on such a plot.) Some roasters spend a lot of time and money on fully automatic roaster control from their computer. This is for the simpler person like me who wishes to do things more manually, and get a nice 'feel' for things. It is also helps remind those like me who need to do certain manual things during a roast, but sometimes miss because of inattentiveness. I like it!
  • Essential

    By Coffee Roaster Small biz guy
    I started using Roastmaster as a hobbyist, and have continued with it as I transitioned into a small business owner/micro-roaster. And this app has performed exceptionally at every step of the way. The developer is a roaster himself, a coffee industry professional, and a talented app developer...and all-around great human! I can't say enough good things about the app and developer. Tip o' the hat!
  • Not worth the cost

    By Jpinec
    This app has its usefulness, but it is not worth the $10 I paid. It has a very non-intuitive feel, and features seem to change with no warning or pattern. Sometimes I am able to compare a current roast profile with a historic one, but then that feature drops out mid-roast. For the cost, I expected much more.
  • Very useful!

    By CaptBrwnStubble
    I have been using this for years and I love it. Any chance of an iwatch app coming for manual data logging?
  • Must have app for roasters

    By SixStringBuzz
    When I started down the journey of coffee roasting, I was using traditional paper logs. But I'm an iOS person and I wanted an app to log my roasts. This app is perfect. I'm still digging in to all the customization and info that it can hold and, with every update, it just gets better and better.
  • If you roast- you NEED this ap! UPDATE!

    By Neo442
    I wrote the first review for this app when it was released, and just did my 303rd roast with it. The features just keep getting better! Keep up the good work! Here's my initial review, for grinds and grins! ☕️ I was sitting at home this morning meditating on the full city+ Sumatra I roasted last night thinking, you know, I should make an app that let's you keep track of your roasts, so you can duplicate the art you just created the day before. I, however am not the programming type, so I figured I should see if there was "an app for that". Indeed, there is! This program is a must for any serious roaster. The UI is polished, and shinier than the finish of a French Roast out of the oven. It let's you track what kind of beans you have, how you have roasted them in the past, cupping scores, and stuff I never thought about, in a simple to use way. Now I can stop using my iPhone timer to keep track of what I consider vital information. Keep up the good work! And thanks for nit releasing a half-baked app!
  • HUGE update!!

    By jcw5002
    Thank you! ❤️
  • A Must for Any Roaster

    By Musicbender
    This is a wonderful app that has doubled my toast quality and made made roasting coffee even more fun. It is very deep and very customizable. At the same time, it is easy to use even when your in the middle of an intense roast session. I roast with my grill and a drum so I have to manually enter my curves. It is very easy to do and that's not something most roast software devs have accomplished. I also love the variety of data you can enter which makes it perfect for those that take this science/art seriously. There are a few things I'd like to see improved. Mainly, the graph is a bit hard to read. Despite the customizability, it can get very cluttered and the dark background makes it hard to decipher. Here are a few other things in the roast section I personally feel could be better: - Easier to read graphs - Can change minimum temp of graph -- not just 0 - section for moister loss percentage - section for development percentage - section for preheat temp - ability to hide unwanted sections (like agtron or roaster voltage) - it should remember or save curve names and parameters when adding a curve - in the bean inventory, it shouldn't go into the negative numbers. Just 0. Otherwise, this is an amazing app that I'll continue to use as I develop my roasting skills. Great work!
  • Now a vital part of my roasting

    By AZRichG
    The hardware portion was a little intimidating, but after installing Phidgets hardware and connecting it to my Diedrich IR-12 it just works. So all I do is use the software and haven't given the HW a second thought. As it should be. Profiling my roasts is automatic now. With the ability to zoom in I can see trouble coming and adjust if necessary. The delta curve tells me more information than just the temp curve. The ability to save roasts as profiles makes repeating a roast much easier. You can even cup and score your roasts in the app. All kinds of features are customizable- the delta curve size, how data is presented in the analyzer, when control points are recorded. I keep learning more about it as I dig deeper. The developer is responsive and genuinely interested in making the app work for all of us, home or biz roaster. The Dropbox integration is nice. I noticed if I pass a database back and forth via Dropbox it sometimes comes up as the old version. This maybe a Dropbox issue, quitting both Dropbox and RM and then sending the database over seems to get it right. My only gripe is that data entry could be simplified. Like sliders for cupping scores, data points that are numbers and such. This app is now an integral part of my roasting day. It's my living. The app has paid for itself and the hardware since day one. Thank you for making my life so much easier and my coffee so much better!
  • Excellent for home coffee roasting

    By Dizzysound
    I recently upgraded from an air popper to Behmor 1600 Plus for home roasting. I wanted better logging than paper for repeat ability and tracking. This app fits the bill. I've logged a couple dozen roasts and am pleased with the results. The only woefully absent feature is database syncing via iCloud or Dropbox. I don't always have my primary iOS device on hand and would love the ability to log a quick roast using my iPhone. Overall, well recommended.