# AR Library vs Rolfes BTX

The clearest difference is update cadence: Rolfes BTX at every 10 months against AR Library's every 21 months. On price, ads, in-app purchases and device support there is nothing between them.

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

AR Library ships an update every 21 months, Rolfes BTX every 10 months. The most recent releases landed on September 30, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | AR Library | Rolfes BTX |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/rolfes-btx/id1523675702/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 21 months | **Every 10 months** |
| Monetization | — | Free |
| Size | 17 MB | 34 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Trelleborg Sealing Solutions](https://appshunter.io/developer/396863758) | [GREENSLEEVES TECHNOLOGIES CORP.](https://appshunter.io/developer/1543764028) |

## What reviewers say

### AR Library

[App page](https://appshunter.io/ios/app/ar-library/id1274959321)

**Features:** macOS Compatibility

**In-app purchases:** none


### Rolfes BTX

[App page](https://appshunter.io/ios/app/rolfes-btx/id1523675702)

This business tool provides real-time and historical data for grain industry workplaces. It offers critical alarms, warnings, and the ability to request emergency, on-location, or remote technical assistance for equipment.

**Highlights:** Live equipment and safety data, Historical data analysis, Critical alarms and warnings, Emergency assistance requests, Remote technical support, Push notifications for hazards

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AR Library free?

AR Library is free to download, with no in-app purchases.

### Is Rolfes BTX free?

Rolfes BTX is free to download, with no in-app purchases.

### Do AR Library or Rolfes BTX have ads?

Neither AR Library nor Rolfes BTX shows ads.

### Which is updated more often, AR Library or Rolfes BTX?

AR Library ships an update every 21 months, and Rolfes BTX every 10 months. Most recently, AR Library was updated on September 30, 2026 and Rolfes BTX on October 3, 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.*