# Fast Molality Calculator vs VS&CoLab

The clearest difference is ads: VS&CoLab at none against Fast Molality Calculator's shown. VS&CoLab also leads on update cadence (every 3 weeks vs every 35 months). On price, in-app purchases, device support and iOS requirement there is nothing between them.

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

Fast Molality Calculator ships an update every 35 months, VS&CoLab every 3 weeks. The most recent releases landed on November 7, 2026 and November 12, 2026 respectively.

## The numbers

| Metric | Fast Molality Calculator | VS&CoLab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 35 months | **Every 3 weeks** |
| Size | 30 MB | 78 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [JIN-HYUNG KIM](https://appshunter.io/developer/1692050199) | [Growth Engineering](https://appshunter.io/developer/1271714033) |

## What reviewers say

### Fast Molality Calculator

[App page](https://appshunter.io/ios/app/fast-molality-calculator/id6451112827)

**Features:** macOS Compatibility

**In-app purchases:** none


### VS&CoLab

[App page](https://appshunter.io/ios/app/vs-and-colab/id6578441896)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fast Molality Calculator free?

Fast Molality Calculator is free to download, with no in-app purchases.

### Is VS&CoLab free?

VS&CoLab is free to download, with no in-app purchases.

### Do Fast Molality Calculator or VS&CoLab have ads?

Fast Molality Calculator shows ads; VS&CoLab does not.

### Which is updated more often, Fast Molality Calculator or VS&CoLab?

Fast Molality Calculator ships an update every 35 months, and VS&CoLab every 3 weeks. Most recently, Fast Molality Calculator was updated on November 7, 2026 and VS&CoLab on November 12, 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.*