# feiffer combine vs ProBooster EX

The clearest difference is in-app purchases: ProBooster EX at none against feiffer combine's 10. On price, ads, device support and iOS requirement there is nothing between them.

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

## The numbers

| Metric | feiffer combine | ProBooster EX |
| --- | --- | --- |
| 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 | — |
| Monetization | Free with in-app purchases | — |
| Size | 20 MB | 39 MB |
| Requires iOS | 13.0 | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Andrea Feiffer](https://appshunter.io/developer/875043798) | [YUNG CHANG PAI](https://appshunter.io/developer/1863441753) |

## 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 |


### ProBooster EX

[App page](https://appshunter.io/ios/app/probooster-ex/id6756885886)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is feiffer combine free?

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

### Is ProBooster EX free?

ProBooster EX is free to download, with no in-app purchases.

### Do feiffer combine or ProBooster EX have ads?

Neither feiffer combine nor ProBooster EX shows ads.

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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.*