# Cotrap vs Call Bus STP

The clearest difference is device support: Cotrap at 3 against Call Bus STP's 1. Cotrap also leads on iOS requirement (13.0 vs 17.7.2). 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.

Cotrap ships an update every 8 days, Call Bus STP fortnightly. The most recent releases landed on October 9, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Cotrap | Call Bus STP |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 5.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 8 days** | Fortnightly |
| Monetization | Free | — |
| Size | 105 MB | 82 MB |
| Requires iOS | **13.0** | 17.7.2 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Consorzio Cotrap](https://appshunter.io/developer/1622437967) | [ioki GmbH](https://appshunter.io/developer/1489448276) |

## What reviewers say

### Cotrap

[App page](https://appshunter.io/ios/app/cotrap/id1592726995)

Book bus trips, check schedules, find nearby stops, and receive real-time updates. Purchase tickets easily within the app and store them digitally for validation.

**Highlights:** Book bus trips, Check schedules and stops, Real-time updates, Digital ticket storage, Credit top-up and payment, Push notifications

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

**In-app purchases:** none


### Call Bus STP

[App page](https://appshunter.io/ios/app/call-bus-stp/id6451437508)

**Features:** Apple Wallet

**In-app purchases:** none


## Frequently asked questions

### Is Cotrap free?

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

### Is Call Bus STP free?

Call Bus STP is free to download, with no in-app purchases.

### Do Cotrap or Call Bus STP have ads?

Neither Cotrap nor Call Bus STP shows ads.

### Which is updated more often, Cotrap or Call Bus STP?

Cotrap ships an update every 8 days, and Call Bus STP fortnightly. Most recently, Cotrap was updated on October 9, 2026 and Call Bus STP on October 7, 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.*