# Coffee DTR Timer vs Roast Master

The clearest difference is iOS requirement: Roast Master at 13.0 against Coffee DTR Timer's 18.5. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Coffee DTR Timer ships an update every 9 days, Roast Master every 2 weeks. The most recent releases landed on September 11, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | Coffee DTR Timer | Roast Master |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 9 days** | Every 2 weeks |
| Monetization | Free | — |
| Size | 1 MB | 66 MB |
| Requires iOS | 18.5 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Mike Whaley](https://appshunter.io/developer/1720535901) | [Seokmin Bang](https://appshunter.io/developer/1896424591) |

## What reviewers say

### Coffee DTR Timer

[App page](https://appshunter.io/ios/app/coffee-dtr-timer/id6749510887)

This app helps coffee roasters time their roasts accurately. It allows users to input roaster, bean, and weight details, then track key stages like yellowing and first crack. The timer calculates development time, weight loss, and provides a roast summary for logging.

**Highlights:** 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

**Features:** macOS Compatibility

**In-app purchases:** none


### Roast Master

[App page](https://appshunter.io/ios/app/roast-master-coffee-journal/id6767210357)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Coffee DTR Timer free?

Coffee DTR Timer is free to download, with no in-app purchases.

### Is Roast Master free?

Roast Master is free to download, with no in-app purchases.

### Do Coffee DTR Timer or Roast Master have ads?

Neither Coffee DTR Timer nor Roast Master shows ads.

### Which is updated more often, Coffee DTR Timer or Roast Master?

Coffee DTR Timer ships an update every 9 days, and Roast Master every 2 weeks. Most recently, Coffee DTR Timer was updated on September 11, 2026 and Roast Master on September 9, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*