Comparison

DOCS II vs FS Connected Home

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
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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

FS Connected Home

Features
Read full description

Requires a compatible router/home gateway with DF Data connected home security inside. DF Data connected home security in your router/home gateway protects all internet-connected devices in your connected home, from desktop computers and phones to smart TVs, gaming consoles and baby monitors against cyber attacks. The easy-to-use Connected Home app enables you to manage your connected home security.

Screenshots

DOCS II4 screens
FS Connected Home4 screens

Verdict

The call

The clearest difference is ads: DOCS II at none against FS Connected Home's shown. FS Connected Home's advantage is update cadence (every 2 months vs every 58 months). On price, in-app purchases, device support and iOS requirement 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, FS Connected Home every 2 months. The most recent releases landed on October 2, 2026 and October 19, 2026 respectively.

Scorecard2 real differences · 7 level
DOCS II versus FS Connected Home: the parameters behind the verdict, then further details
ParameterDOCS IIFS Connected Home
PriceFreeFree
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 58 monthsEvery 2 months — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size91 MB61 MB
Age rating4+4+
DeveloperVirtual Technology LLCDF-Data Oy

In-app purchases

None

DOCS II

No in-app purchases

None

FS Connected Home

No in-app purchases

Questions

Is DOCS II free?
DOCS II is free to download, with no in-app purchases.
Is FS Connected Home free?
FS Connected Home is free to download, with no in-app purchases.
Do DOCS II or FS Connected Home have ads?
FS Connected Home shows ads; DOCS II does not.
Which is updated more often, DOCS II or FS Connected Home?
DOCS II ships an update every 58 months, and FS Connected Home every 2 months. Most recently, DOCS II was updated on October 2, 2026 and FS Connected Home on October 19, 2026.

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