Coffee Roasting RDT Timer

Coffee Roasting RDT Timer

RDT Timer

10 ratings
7 reviews

Archived App (Last seen on 14 May 2026)

This is an archived listing of the app previously available on the App Store.

Although the app is no longer distributed by Apple, you can still view its description, screenshots, version history, ratings, and metadata for reference.

Details

  • Released
  • Updated
  • March 4, 2020
  • March 14, 2020

Features

Coffee Roasting RDT Timer screenshot #1 for iPhone
Coffee Roasting RDT Timer screenshot #2 for iPhone
Coffee Roasting RDT Timer screenshot #3 for iPhone
Coffee Roasting RDT Timer screenshot #4 for iPhone
Coffee Roasting RDT Timer screenshot #5 for iPhone
iphone
ipad
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About

This application assists coffee roasters by timing the roast development phase. It calculates the roast development time percentage and displays target stop times based on the onset of the first crack. The app also allows for the calculation of weight loss during the roasting process.

Roast development time timer
First crack detection
RDT percentage calculation
Target stop time display
Weight loss calculation
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What's New in Coffee Roasting RDT Timer

1.1

March 14, 2020

Minor bug fix of the typing screen not going away. Icon image fix.

User reviews

Absolutely useless

This timer is useless. If your screen times out, the timer stops. Any results for DTR is unreliable. Don’t waste your money.

Simple and Useful

For those that don’t want to “nerd out” on your data and want a simple and useful tool, this is it. Roasting coffee isn’t difficult and you don’t really need all those gadgets other people use, simple tools like this can provide good information.

However I have a few suggestions. I don’t dark roast often but it would be helpful with a second crack button. It would also be helpful if you were able to enter the bean your roasting and roast date. Great app with a lot of potential.
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Timer stop when phone goes in sleep mode

Timer stop when phone goes in sleep mode. Timer should run in the background just like iPhone timer. Poor implementation

Needs a lot of work

The timer currently doesn’t continue to run when the app is in the background. This is a deal breaker and makes the app unusable It has to run in the background so I can write notes about the roast in my notes app.

Great app!

This app is really awesome for a novice or a veteran coffee roaster. I think there is room for improvements in the future.

FAQ

What is the Coffee Roasting RDT Timer used for?

The Coffee Roasting RDT Timer is used to precisely time the roast development phase of coffee beans. It helps users track the percentage of roast development time (RDT) and calculate when to stop the roast based on the first crack.

How much does the Coffee Roasting RDT Timer cost?

The Coffee Roasting RDT Timer is a paid application, priced at $0.99. This one-time purchase grants you access to all its features.

Does Coffee Roasting RDT Timer have ads?

No, Coffee Roasting RDT Timer does not contain advertisements. As a paid app, it offers an ad-free experience for users.

What devices is Coffee Roasting RDT Timer compatible with?

Coffee Roasting RDT Timer is compatible with iPhones, iPads, and iPods. It is designed for iOS devices.

When was Coffee Roasting RDT Timer last updated?

The latest version of Coffee Roasting RDT Timer is 1.1, which was last updated on March 14, 2020. This indicates a relatively stable feature set since its initial release.

What is the age rating for Coffee Roasting RDT Timer?

Coffee Roasting RDT Timer has an age rating of 4+. This means it is suitable for users of all ages, with no content restrictions.

How does Coffee Roasting RDT Timer help with weight loss calculation?

You can use Coffee Roasting RDT Timer to calculate the percent weight loss of your coffee beans. Simply enter the beginning weight and end weight of your beans into the app.

What is the user sentiment for Coffee Roasting RDT Timer?

Coffee Roasting RDT Timer has an average rating of 3.6 stars from 10 ratings. This suggests a mixed but generally positive reception from its user base.