# TOPO.app vs Dirnbacher

TOPO.app and Dirnbacher are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on October 7, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | TOPO.app | Dirnbacher |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | Every 2 months |
| Size | 37 MB | 45 MB |
| Requires iOS | 16.6 | **15.6** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [RTB Elektronik](https://appshunter.io/developer/1033533477) | [Idwell GmbH](https://appshunter.io/developer/1269662593) |

## What reviewers say

### TOPO.app

[App page](https://appshunter.io/ios/app/topoapp/id1536386836)

**In-app purchases:** none


### Dirnbacher

[App page](https://appshunter.io/ios/app/dirnbacher/id1590339107)

**In-app purchases:** none


## Frequently asked questions

### Is TOPO.app free?

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

### Is Dirnbacher free?

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

### Do TOPO.app or Dirnbacher have ads?

Neither TOPO.app nor Dirnbacher shows ads.

### Which is updated more often, TOPO.app or Dirnbacher?

TOPO.app ships an update every 2 months, and Dirnbacher every 2 months. Most recently, TOPO.app was updated on October 7, 2026 and Dirnbacher on October 21, 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.*