# Virtual Observer vs Bivalves@IPMA

The clearest difference is update cadence: Virtual Observer at every 2 weeks against Bivalves@IPMA's every 3 months. Virtual Observer also leads on iOS requirement (13.4 vs 15.6). 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.

Virtual Observer ships an update every 2 weeks, Bivalves@IPMA every 3 months. Both last shipped on October 5, 2026.

## The numbers

| Metric | Virtual Observer | Bivalves@IPMA |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 months |
| Size | 70 MB | 39 MB |
| Requires iOS | **13.4** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shellcatch Inc](https://appshunter.io/developer/1250923937) | [Gisgeo Information Systems, LDA](https://appshunter.io/developer/1045067469) |

## What reviewers say

### Virtual Observer

[App page](https://appshunter.io/ios/app/virtual-observer/id1507656034)

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

**In-app purchases:** none


### Bivalves@IPMA

[App page](https://appshunter.io/ios/app/bivalvesipma/id1621523454)

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

**In-app purchases:** none


## Frequently asked questions

### Is Virtual Observer free?

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

### Is Bivalves@IPMA free?

Bivalves@IPMA is free to download, with no in-app purchases.

### Do Virtual Observer or Bivalves@IPMA have ads?

Neither Virtual Observer nor Bivalves@IPMA shows ads.

### Which is updated more often, Virtual Observer or Bivalves@IPMA?

Virtual Observer ships an update every 2 weeks, and Bivalves@IPMA every 3 months. Most recently, Virtual Observer was updated on October 5, 2026 and Bivalves@IPMA on October 5, 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.*