# Roastmaster vs Coffee DTR Timer

The clearest difference is in-app purchases: Coffee DTR Timer at none against Roastmaster's 7. Coffee DTR Timer also leads on update cadence (every 9 days vs every 5 months) and review sentiment (100% vs 79%). On price, ads and device support there is nothing between them.

Both are free to download. Roastmaster sells 7 in-app purchases, starting at $4.99 per month. Coffee DTR Timer asks for nothing beyond the download.

Roastmaster ships an update every 5 months, Coffee DTR Timer every 9 days. The most recent releases landed on September 21, 2026 and September 11, 2026 respectively.

## The numbers

| Metric | Roastmaster | Coffee DTR Timer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (29 ratings)](https://appshunter.io/ios/app/roastmaster/id375526217/reviews)** | — |
| Number of ratings | **29** | — |
| Positive reviews | 79.1% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 9 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 88 MB | 1 MB |
| Requires iOS | 26.0 | **18.5** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Rainfrog, Inc.](https://appshunter.io/developer/375526220) | [Mike Whaley](https://appshunter.io/developer/1720535901) |

## What reviewers say

### Roastmaster

[App page](https://appshunter.io/ios/app/roastmaster/id375526217)

This app helps coffee roasters achieve consistent, perfect cups by tracking roast data, managing green bean inventory, and facilitating blend creation. It offers detailed reporting, visual analysis tools, and optional thermocouple integration for automated roasting.

**Highlights:** Roast data tracking and analysis, Green bean inventory management, Blend creation and experimentation, Cupping score recording, Automated roast reminders, Roaster maintenance scheduling, Optional thermocouple data logging

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

**In-app purchases (7)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Basic Monthly | $4.99 | per month |
| Pro Monthly | $19.99 | per month |
| Premium Monthly | $39.99 | per month |
| Basic Yearly | $49.99 | per year |
| Pro Yearly | $199.99 | per year |
| Premium Yearly | $399.99 | per year |
| Data Logging | $14.99 | one-time |

**What reviewers like**

- 👍 Comprehensive logging and tracking
- 👍 Great for consistency
- 👍 Feature-rich
- 👍 Useful for business and hobbyists
- 👍 Good developer support (historical)

**What reviewers complain about**

- 👎 Sudden subscription model
- 👎 Previously paid features now require subscription
- 👎 Locked out long-time users
- 👎 Dated interface (mentioned by some)
- 👎 Not intuitive (mentioned by some)

**Reported bugs**

- App crashes
- Cannot connect to Bluetooth probe (specific machine)
- Cannot connect to cloud
- Increase Contrast iOS setting obscures preference settings
- App is no longer usable without buying entitlements

**Requested features**

- Add development percentage to roast screen
- Ability to store low to medium resolution image with a roast
- Ability to make a blend from existing roasts
- Support for cheaper, off-the-shelf Bluetooth probe thermometers
- Copy roast including data curve


### 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


## Frequently asked questions

### Is Roastmaster free?

Roastmaster is free to download, with in-app purchases available.

### Is Coffee DTR Timer free?

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

### Do Roastmaster or Coffee DTR Timer have ads?

Neither Roastmaster nor Coffee DTR Timer shows ads.

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

Roastmaster ships an update every 5 months, and Coffee DTR Timer every 9 days. Most recently, Roastmaster was updated on September 21, 2026 and Coffee DTR Timer on September 11, 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.*