# Biohaven Events vs PrevenTRON IM

The clearest difference is iOS requirement: Biohaven Events at 14.0 against PrevenTRON IM's 17.0. 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.

Biohaven Events ships an update monthly, PrevenTRON IM every 6 weeks. The most recent releases landed on October 30, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Biohaven Events | PrevenTRON IM |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 6 weeks |
| Size | 41 MB | 63 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 17+ |
| Developer | [BIOHAVEN PHARMACEUTICALS, INC.](https://appshunter.io/developer/1475201475) | [Q2Q](https://appshunter.io/developer/1380299858) |

## What reviewers say

### Biohaven Events

[App page](https://appshunter.io/ios/app/biohaven-events/id1575676146)

**Features:** macOS Compatibility

**In-app purchases:** none


### PrevenTRON IM

[App page](https://appshunter.io/ios/app/preventron-im/id6786364544)

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

**In-app purchases:** none


## Frequently asked questions

### Is Biohaven Events free?

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

### Is PrevenTRON IM free?

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

### Do Biohaven Events or PrevenTRON IM have ads?

Neither Biohaven Events nor PrevenTRON IM shows ads.

### Which is updated more often, Biohaven Events or PrevenTRON IM?

Biohaven Events ships an update monthly, and PrevenTRON IM every 6 weeks. Most recently, Biohaven Events was updated on October 30, 2026 and PrevenTRON IM on October 25, 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.*