# ÖBf vs INTERFORST 2026

The clearest difference is iOS requirement: INTERFORST 2026 at 13.0 against ÖBf's 15.0. 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.

ÖBf ships an update every 3 months, INTERFORST 2026 every 2 months. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | ÖBf | INTERFORST 2026 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Size | 52 MB | 48 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [FelixTools Ges.m.b.H.](https://appshunter.io/developer/1128299791) | [Messe München GmbH](https://appshunter.io/developer/1156932705) |

## What reviewers say

### ÖBf

[App page](https://appshunter.io/ios/app/obf-edl/id1605975678)

**Features:** Vision Pro support

**In-app purchases:** none


### INTERFORST 2026

[App page](https://appshunter.io/ios/app/interforst-2026/id6778840814)

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

**In-app purchases:** none


## Frequently asked questions

### Is ÖBf free?

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

### Is INTERFORST 2026 free?

INTERFORST 2026 is free to download, with no in-app purchases.

### Do ÖBf or INTERFORST 2026 have ads?

Neither ÖBf nor INTERFORST 2026 shows ads.

### Which is updated more often, ÖBf or INTERFORST 2026?

ÖBf ships an update every 3 months, and INTERFORST 2026 every 2 months. Most recently, ÖBf was updated on November 7, 2026 and INTERFORST 2026 on October 31, 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.*