# feiffer combine vs DR. KAISER

The clearest difference is in-app purchases: DR. KAISER at none against feiffer combine's 10. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. feiffer combine sells 10 one-off in-app purchases. DR. KAISER asks for nothing beyond the download.

feiffer combine ships an update every 6 months, DR. KAISER every 4 months. The most recent releases landed on August 1, 2026 and September 15, 2026 respectively.

## The numbers

| Metric | feiffer combine | DR. KAISER |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/feiffer-combine/id875043795/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 68.8% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 months** |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 39 MB |
| Requires iOS | 13.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Andrea Feiffer](https://appshunter.io/developer/875043798) | [DR. KAISER DIAMANTWERKZEUGE GmbH & Co. KG](https://appshunter.io/developer/1392887718) |

## What reviewers say

### feiffer combine

[App page](https://appshunter.io/ios/app/feiffer-combine/id875043795)

This app provides a step-by-step guide for calibrating combine harvesters to achieve optimal settings. It adapts to throughput and losses, ensuring proper adjustment for all harvest conditions and performance ranges, thereby limiting losses.

**Highlights:** Step-by-step calibration guide, Optimal combine harvester settings, Adapts to throughput and losses, Field-tested and reliable values, Quick and safe calibration, Demo version available

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| John Deere 2054 | $29.99 | one-time |
| Claas Trion 720 | $29.99 | one-time |
| Claas Trion 660 | $29.99 | one-time |
| Claas Trion 730 | $29.99 | one-time |
| Claas Trion 640 | $29.99 | one-time |
| Claas Trion 520 | $29.99 | one-time |
| Claas Trion 530 | $29.99 | one-time |
| Claas Trion 650 | $29.99 | one-time |
| John Deere S 785 | $29.99 | one-time |
| Claas Trion 750 | $29.99 | one-time |


### DR. KAISER

[App page](https://appshunter.io/ios/app/dr-kaiser/id1392887719)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is feiffer combine free?

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

### Is DR. KAISER free?

DR. KAISER is free to download, with no in-app purchases.

### Do feiffer combine or DR. KAISER have ads?

Neither feiffer combine nor DR. KAISER shows ads.

### Which is updated more often, feiffer combine or DR. KAISER?

feiffer combine ships an update every 6 months, and DR. KAISER every 4 months. Most recently, feiffer combine was updated on August 1, 2026 and DR. KAISER on September 15, 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.*