# Virtual Ringelmann vs ACT Soluções

The clearest difference is update cadence: Virtual Ringelmann at monthly against ACT Soluções's every 5 months. 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 Ringelmann ships an update monthly, ACT Soluções every 5 months. The most recent releases landed on September 29, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Virtual Ringelmann | ACT Soluções |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 5 months |
| Monetization | Free | — |
| Size | 73 MB | 42 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ACT Sistemas LTDA](https://appshunter.io/developer/1569392578) | [Guilherme Oliveira](https://appshunter.io/developer/1571793149) |

## What reviewers say

### Virtual Ringelmann

[App page](https://appshunter.io/ios/app/virtual-ringelmann/id1569392576)

This app aids in black smoke inspections by virtualizing the Ringelmann Scale methodology through your device's camera. It streamlines the process for assessing emissions from diesel engines and industrial chimneys, supporting environmental compliance and decision-making.

**Highlights:** Virtual Ringelmann Scale measurement, Supports vehicular and stationary surveillance, Automatic pollution index identification, Generates photographic evidence, Web portal integration for reports, Historical data logging

**Features:** macOS Compatibility

**In-app purchases:** none


### ACT Soluções

[App page](https://appshunter.io/ios/app/act-solucoes/id1571793147)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Virtual Ringelmann free?

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

### Is ACT Soluções free?

ACT Soluções is free to download, with no in-app purchases.

### Do Virtual Ringelmann or ACT Soluções have ads?

Neither Virtual Ringelmann nor ACT Soluções shows ads.

### Which is updated more often, Virtual Ringelmann or ACT Soluções?

Virtual Ringelmann ships an update monthly, and ACT Soluções every 5 months. Most recently, Virtual Ringelmann was updated on September 29, 2026 and ACT Soluções on October 1, 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.*