# Biodesign Connect vs VM Propane

The clearest difference is iOS requirement: Biodesign Connect at 9.3 against VM Propane's 12.2. 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.

Biodesign Connect ships an update every 40 months, VM Propane every 23 months. Both last shipped on November 7, 2026.

## The numbers

| Metric | Biodesign Connect | VM Propane |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 40 months | **Every 23 months** |
| Size | 89 MB | 46 MB |
| Requires iOS | **9.3** | 12.2 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DIWAS](https://appshunter.io/developer/1506894172) | [EDPO, LLC](https://appshunter.io/developer/1521548149) |

## What reviewers say

### Biodesign Connect

[App page](https://appshunter.io/ios/app/biodesign-connect/id1506894173)

**Features:** macOS Compatibility

**In-app purchases:** none


### VM Propane

[App page](https://appshunter.io/ios/app/vm-propane/id1583986992)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Biodesign Connect free?

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

### Is VM Propane free?

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

### Do Biodesign Connect or VM Propane have ads?

Neither Biodesign Connect nor VM Propane shows ads.

### Which is updated more often, Biodesign Connect or VM Propane?

Biodesign Connect ships an update every 40 months, and VM Propane every 23 months. Most recently, Biodesign Connect was updated on November 7, 2026 and VM Propane on November 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.*