# Coffee DTR Timer — Live Coffee DTR for roasters

> Coffee roasting timer for tracking roast stages and calculating development time. (iPhone/iPad app by Mike Whaley.)

- Source: https://appshunter.io/ios/app/coffee-dtr-timer/id6749510887 (this page in markdown: same URL + `.md`)
- Developer: [Mike Whaley](https://appshunter.io/developer/1720535901)
- Category: Food & Drink
- Price: Free
- Age rating: 4+
- Requires: iOS 18.5 · 1 MB
- Languages: English
- Released: 2025-08-05
- Data updated: 2026-08-19
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/coffee-dtr-timer/id6749510887/reviews.md

## What is Coffee DTR Timer?

This simple coffee roast timer is used with your roaster of choice. Add your roaster name, bean name and green weight with units on the setup screen. On the timer screen hit start when you start your roast. Tap the Yellowing button when the beans start to turn yellow and the drying phase time is saved. Tap First Crack at the sound of first crack and the Maillard phase time is saved and live DTR is enabled allowing to dial in development time! Tap Drop/End and the development time along with DTR, maillard time, time to first crack and total roast time are shown to allow you to log your roast information. Add roasted weight and weight loss is calculated. Save roast will add to roast history and display the roast summary screen. On the history screen the user can favorite or delete roasts from the history.

## Key features

- Roast stage timing (Yellowing, First Crack, Drop)
- Live Development Time (DTR) calculation
- Weight loss calculation
- Roast history logging
- Favorite and delete roasts
- Custom roaster and bean input

## Recent user reviews (2 of 2)

All indexed reviews: https://appshunter.io/ios/app/coffee-dtr-timer/id6749510887/reviews.md

### 5/5 — Excellent

*2025-12-04*

Really nice, simple app that does exactly what it says. Would love the ability to add some notes to a roast.

### 5/5 — Simple is Best

*2025-09-11*

I just used this to record my roast from yesterday after-the-fact, and it’s a very simple interface—which is good. I love that I can save my roast profiles and favorite them when/if I deem the bean worthy of a repeat attempt. Well done!

## Frequently asked questions about Coffee DTR Timer

### What is the main purpose of Coffee DTR Timer?

Coffee DTR Timer is designed to help coffee roasters accurately time and track the critical stages of their roasting process. It calculates key metrics like development time and weight loss, aiding in consistent and dialed-in roasts.

### How does Coffee DTR Timer help with roast analysis?

The app records times for yellowing, first crack, and drop, enabling the calculation of development time (DTR) and Maillard phase time. This data is crucial for understanding and refining roast profiles.

### Can I save and review my past roasts with Coffee DTR Timer?

Yes, the 'Save roast' function adds your roast details to a history screen. From there, you can view a summary of each roast and choose to favorite or delete entries.

### What information can I input into Coffee DTR Timer?

Before starting a roast, you can input your roaster name, bean name, and green weight with units. After the roast, you can add the roasted weight to calculate weight loss.

### Is Coffee DTR Timer available on multiple devices?

Coffee DTR Timer is available for both iPhone and iPad, allowing roasters to use it on their preferred Apple devices.

### How often is Coffee DTR Timer updated?

The app was last updated on September 9, 2025, indicating active development and support. The latest version is 2.0.

### What is the age rating for Coffee DTR Timer?

Coffee DTR Timer has an age rating of 4+, making it suitable for a wide range of users interested in coffee roasting.

### Does Coffee DTR Timer have ads?

No, Coffee DTR Timer does not contain advertisements, providing an uninterrupted experience for users during their roasting sessions.

## Version history (last 4 of 4)

### 2.0 — 2025-09-09

Separated Roast Setup, Timer, and Summary into separate tabs for cleaner user interface and added roast history with the ability to mark favorites.

### 1.2 — 2025-09-02

Add Bean name and green weight in grams, ounces, or pounds before roast and it is displayed where "Roast Timer" was previously. Add roasted weight after drop and weight loss percentage is calculated and displayed.

### 1.1 — 2025-08-24

Added total time to 1st Crack and Drop in a new section below. Changed the interface of Live DTR.

### 1.0 — 2025-08-05

No release notes.

## Apps similar to Coffee DTR Timer

| App | Rating | Price | Category |
| --- | --- | --- | --- |
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## More apps by Mike Whaley

- [UseDryTrails](https://appshunter.io/ios/app/usedrytrails/id6474069841)
- [TrainerKit](https://appshunter.io/ios/app/trainerkit/id6757768724)
- [TrainerKit Indoor Cycling](https://appshunter.io/ios/app/trainerkit-indoor-cycling/id6758644426)

All apps by Mike Whaley: https://appshunter.io/developer/1720535901

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-19.*