# CalculateVolumePro vs Solution Equilibria Lab

The clearest difference is in-app purchases: Solution Equilibria Lab at none against CalculateVolumePro's 1. Solution Equilibria Lab also leads on device support (4 vs 2) and iOS requirement (15.0 vs 18.0). CalculateVolumePro's advantage is update cadence (weekly vs every 2 months). On price and ads there is nothing between them.

Both are free to download. CalculateVolumePro sells 1 one-off in-app purchase. Solution Equilibria Lab asks for nothing beyond the download.

CalculateVolumePro ships an update weekly, Solution Equilibria Lab every 2 months. The most recent releases landed on October 25, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | CalculateVolumePro | Solution Equilibria Lab |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 2 months |
| Size | 3 MB | 114 MB |
| Requires iOS | 18.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 4+ |
| Developer | [Maxime Haeyaert](https://appshunter.io/developer/1274130669) | [Oleksandr Rubtsov](https://appshunter.io/developer/1823549572) |

## What reviewers say

### CalculateVolumePro

[App page](https://appshunter.io/ios/app/calculatevolumepro/id6737241011)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Detailed calculations | $0.99 | one-time |


### Solution Equilibria Lab

[App page](https://appshunter.io/ios/app/solution-equilibria-lab/id6754339747)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is CalculateVolumePro free?

CalculateVolumePro is free to download, with in-app purchases available.

### Is Solution Equilibria Lab free?

Solution Equilibria Lab is free to download, with no in-app purchases.

### Do CalculateVolumePro or Solution Equilibria Lab have ads?

Neither CalculateVolumePro nor Solution Equilibria Lab shows ads.

### Which is updated more often, CalculateVolumePro or Solution Equilibria Lab?

CalculateVolumePro ships an update weekly, and Solution Equilibria Lab every 2 months. Most recently, CalculateVolumePro was updated on October 25, 2026 and Solution Equilibria Lab on October 28, 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.*