Comparison

Virtual Ringelmann vs Quasar ST

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Virtual Ringelmann

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
Read full description

Assistance system for black smoke inspections. Through the camera of your device, we virtualize the Ringelmann Scale methodology, used worldwide to measure the emission of black smoke from diesel engines and industrial chimneys. The inspection process is faster and more efficient and it is possible to inspect a greater number of vehicles and chimneys, thus allowing them to be sent to suitability, thus reducing the emission of black smoke and freeing the environment from tons of this residue. Virtual Ringelmann supports both vehicular and stationary surveillance methods. It was developed for industries and transport companies that need to implement the concept of environmental management in the administration and operation of pollutant emitters and who wish to be aligned with municipal, state, national, or international environmental legislation and standards such as 14001. Benefits of Virtual Ringelmann • Measurement Assessment of the conditions of the fleet or industrial chimneys supporting decision making for preventive and corrective actions. • Decision support It automatically identifies and records the pollution index emitted by the inspected source through the captured image. This information together with the registered image will allow a richer analysis of the characteristics of the measurements. • Confidence Generates evidence through photographic image captured during the inspection process. This image can be sent to the Virtual Ringelmann Portal (http://portal.virtualringelmann.com) to generate a decision support report. • Integration Allows the generation of inspection reports on the web portal as well as the creation of a history of the vehicular or stationary sources inspected • Convenience For large companies, it will be possible to maintain a single technical person responsible for analyzing the measurements without leaving the company using the reports issued by the portal. The measurements will be more constant, however, made by common people, without the need for analysis training as it is with the PAPEL scale, bringing more credibility and economy to the inspection process. Virtual Ringelmann is the evolution of a product created in 1888 in order to facilitate inspection and monitoring of smoke emitters.

About

Quasar ST

Features
Read full description

Quasar is an extension of our tracking and logistics service, providing customers with a simple, fast, and secure way to monitor the real-time location of their vehicles from anywhere. With Quasar, users can view vehicle positions directly on the map and access essential information such as current speed, ignition status, address, and other data provided by the tracking device. The app also includes a nearby freight search tool, designed to facilitate cargo transportation operations. This feature is available exclusively for cargo vehicles, such as trucks and trailers, helping drivers find freight opportunities quickly and efficiently. For enhanced security, Quasar offers a Virtual Alarm, an anti-theft feature that allows users to define a safety perimeter. The user is notified immediately if the vehicle leaves the defined area. On the Map screen, users can track the real-time location of all registered vehicles. The Vehicle List screen displays key information for each vehicle in a list format. By selecting a vehicle, users are directed to the Vehicle Details screen, where all available data provided by the tracker is displayed. The app also includes a Settings screen, where users can: Log out of their account View information about the company Enable automatic updates, which refresh the main map every 30 seconds, displaying new positions generated by the Quasar tracking device Quasar was developed to deliver control, security, and efficiency in vehicle and logistics management.

Screenshots

Virtual Ringelmann4 screens
Quasar ST4 screens

Verdict

The call

Virtual Ringelmann and Quasar ST 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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

Virtual Ringelmann ships an update monthly, Quasar ST every 6 weeks. The most recent releases landed on September 10, 2026 and September 14, 2026 respectively.

ScorecardNo meaningful differences
Virtual Ringelmann versus Quasar ST: the parameters behind the verdict, then further details
ParameterVirtual RingelmannQuasar ST
PriceFreeFree
Positive reviews50.0% of reviews—
Update frequencyMonthly — betterEvery 6 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.0 — better15.1
Further details — not scored
Size73 MB59 MB
Age rating4+4+
DeveloperACT Sistemas LTDAQUASAR SOLUCOES EM TRANSPORTES LTDA

In-app purchases

None

Virtual Ringelmann

No in-app purchases

None

Quasar ST

No in-app purchases

Questions

Is Virtual Ringelmann free?
Virtual Ringelmann is free to download, with no in-app purchases.
Is Quasar ST free?
Quasar ST is free to download, with no in-app purchases.
Do Virtual Ringelmann or Quasar ST have ads?
Neither Virtual Ringelmann nor Quasar ST shows ads.
Which is updated more often, Virtual Ringelmann or Quasar ST?
Virtual Ringelmann ships an update monthly, and Quasar ST every 6 weeks. Most recently, Virtual Ringelmann was updated on September 10, 2026 and Quasar ST on September 14, 2026.

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