# Virtual Ringelmann vs Lav Waves

Virtual Ringelmann and Lav Waves are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 29, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | Virtual Ringelmann | Lav Waves |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | Monthly |
| Monetization | Free | — |
| Size | 73 MB | 45 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [ACT Sistemas LTDA](https://appshunter.io/developer/1569392578) | [MaxPan](https://appshunter.io/developer/1807374075) |

## 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


### Lav Waves

[App page](https://appshunter.io/ios/app/lav-waves/id6747673491)

**Features:** macOS Compatibility, 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 Lav Waves free?

Lav Waves is free to download, with no in-app purchases.

### Do Virtual Ringelmann or Lav Waves have ads?

Neither Virtual Ringelmann nor Lav Waves shows ads.

### Which is updated more often, Virtual Ringelmann or Lav Waves?

Virtual Ringelmann ships an update monthly, and Lav Waves monthly. Most recently, Virtual Ringelmann was updated on September 29, 2026 and Lav Waves on September 21, 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.*