Comparison

DOCS II vs Rand Water

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

Head to head
About

DOCS II

This app automates the capture and reporting of visible emission observations for air quality compliance. It uses location data, weather, and sun angles to document opacity levels, helping users avoid costly fines. The tool generates compliance archives for regulated sources.

Highlights
  • Automated Visible Emission Observation (VEO) capture
  • Integration with Google Maps, compass, and inclinometers
  • Real-time weather and sun angle data
  • Opacity level documentation
  • Automated VEO report generation
  • Compliance archive creation
Features
Read full description

DOCS II is developed by Virtual Technology, LLC, located in Rio Rico, Arizona. Air Quality has been driven by Opacity Emission standards since the 1800s, with Opacity percentages used to determine airflow requirements for various coal-fired boilers. Every locality in the USA has a standing Visible Emission Opacity limit of no more than 40% Opacity over any six minutes. Visible Emission Standards lowering this opacity limit to 20% / 5% / Zero are not uncommon in the USA, with enforcement of air pollution regulations at the federal, state, and local levels. Failure to adhere to these regulations is very costly, as violations of opacity limits can result in fines of $25,000 per source per day. The most common methods to monitor opacity levels are EPA Method 9, EPA Alternative Method 082, ASTM D7520-16, Digital Camera Opacity Technique, using EPA Method 22. The methods are a visible emission indicator of smoke or no smoke, followed by a Visible Emission Observation (VEO) to determine Opacity. A Visible Emissions Manager completely automates the entire capture of information needed for a Visible Emission Observation. Using Google Maps, compass, inclinometers, distance calculations, online weather, and sun angle data, the VEO is documented with populated data. With the local data captured, the VEO is uploaded to the Virtual Technology LLC servers, and a completed VEO report is generated to create the compliance archive. Nuisance ‘visible’ emissions accounted for over 85% of Air Quality complaints until today are still monitored exclusively by the highly subjective human observation method 9. Visible Emissions Manager is the solution for measuring Opacity and managing complaints of Nuisance Visible Emissions and regulated sources.

About

Rand Water

Features
Read full description

The Rand Water Mobile App was developed to allow customer and the public to assist in saving water and reporting damages to water infrastructure. The App allows you to report water leaks, burst pipes as well as encroachments which refers to vandalism of any kind of water infrastructure such as water boxes and pipeline. Features; Report water incidents; - At Home - In the Community - Encroachments Get the latest news at Rand Water and updates directly from their Twitter feed. Email Rand Water directly with question or queries. Contact Rand Water directly via telephone or email directly from the App. Rand Water – Working together to save water!

Screenshots

DOCS II4 screens
Rand Water4 screens

Verdict

The call

The clearest difference is update cadence: Rand Water at every 6 weeks against DOCS II's every 58 months. Rand Water also leads on iOS requirement (12.4 vs 15.0). On price, ads, in-app purchases and device support there is nothing between them.

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

DOCS II ships an update every 58 months, Rand Water every 6 weeks. The most recent releases landed on October 19, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 7 level
DOCS II versus Rand Water: the parameters behind the verdict, then further details
ParameterDOCS IIRand Water
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 58 monthsEvery 6 weeks — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS15.012.4 — better
Further details — not scored
Size91 MB32 MB
Age rating4+4+
DeveloperVirtual Technology LLCSTRIDE IT BUSINESS SOLUTIONS (PTY) LTD

In-app purchases

None

DOCS II

No in-app purchases

None

Rand Water

No in-app purchases

Questions

Is DOCS II free?
DOCS II is free to download, with no in-app purchases.
Is Rand Water free?
Rand Water is free to download, with no in-app purchases.
Do DOCS II or Rand Water have ads?
Neither DOCS II nor Rand Water shows ads.
Which is updated more often, DOCS II or Rand Water?
DOCS II ships an update every 58 months, and Rand Water every 6 weeks. Most recently, DOCS II was updated on October 19, 2026 and Rand Water on October 7, 2026.

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