Comparison

VOS vs HVAC Manual Boss

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

Head to head
About

VOS

This tool enables service, tech, sales, and construction professionals to perform remote assessments and diagnostics. It streamlines problem-solving by allowing users to diagnose and strategize from any location, reducing the need for on-site visits.

Highlights
  • Remote assessments
  • Remote diagnostics
  • Problem-solving
  • Intuitive interface
  • Cross-industry application
Features
Read full description

See the issue before you dispatch. VOS is remote visual support for service teams, technicians, dispatchers, and support professionals. Start a secure live session and see through a customer’s or onsite technician’s phone camera without requiring them to install an app. It is not a screen share. It is a live view built for real service work. Use VOS to: • Diagnose equipment issues before scheduling a visit • Confirm model numbers, alarm codes, status lights, visible damage, leaks, and access conditions • Guide customers and field technicians with live arrows, circles, zoom, and flashlight controls • Capture screenshots, recordings, annotations, and session notes • Create inspection records, site surveys, before-and-after evidence, and service documentation • Share a review link with managers, vendors, technicians, or customers • Decide whether to resolve the issue remotely, prepare parts and tools, or schedule an onsite visit Three visual workflows • Remote visual support: See what the customer or technician sees • Live walkthroughs: Share your own camera while another person watches • Field documentation: Record and document work without inviting another participant Built for service teams Customers join from a secure browser link, so they do not have to download an app or exchange personal phone numbers. The technician can guide the session, capture the important details, and keep the documentation attached to the work. VOS helps service organizations reduce unnecessary truck rolls, prevent repeat visits, improve handoffs, diagnose issues faster, and arrive better prepared. Ideal for HVAC, refrigeration, electrical, plumbing, facilities, property maintenance, industrial service, IT remote hands, warranty support, and technical customer service.

About

HVAC Manual Boss

This app streamlines HVAC load calculations, enabling users to quickly generate Manual J, S, and D outputs. It allows for on-the-spot pricing and uses real-world data for accurate estimates, even while on-site.

Highlights
  • Manual J load calculations
  • Manual D and S outputs
  • On-the-spot pricing
  • Real-world data integration
  • Major equipment brand access
  • On-site estimate generation
Features
Read full description

• Build Manual J load calculations quickly and accurately • Generate Manual D and S outputs without the headache • Create good, better, best pricing on the spot • Use real-world data to stay consistent with your numbers • Access major equipment brands and configurations • Produce estimates while you’re still in the home Subscription automatically renews unless canceled at least 24 hours before the end of the trial period. Payment will be charged to your Apple ID account. Manage or cancel anytime in Settings. https://hvacmanualboss.com/terms

Screenshots

VOS4 screens
HVAC Manual Boss4 screens

Verdict

The call

The clearest difference is monetization model: VOS at free with in-app purchases against HVAC Manual Boss's subscription. VOS also leads on update cadence (every 3 days vs every 9 days) and ratings volume (8 vs 1). On price, rating, review sentiment and ads 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. VOS sells 2 in-app purchases, starting at $14.99 per month and HVAC Manual Boss sells 1 in-app purchase, starting at $29.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for VOS against 5.0 for HVAC Manual Boss. That said, the two scores are not equally well evidenced: VOS has 8 ratings behind it against 1, so its average is the more settled of the two. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

VOS ships an update every 3 days, HVAC Manual Boss every 9 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
VOS versus HVAC Manual Boss: the parameters behind the verdict, then further details
ParameterVOSHVAC Manual Boss
PriceFreeFree
Rating5.0 (8 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings8 — better1
Update frequencyEvery 3 days — betterEvery 9 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases — betterSubscription
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.415.1 — better
Further details — not scored
Size56 MB39 MB
Age rating4+4+
DeveloperVirtually OnSite LLCJohn Kelley

Customer experience

VOS

All ratings8 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

HVAC Manual Boss

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

2 purchases

VOS

Subscriptions2
  • VOS Basic$14.991 Month
  • VOS Business$49.991 Month
1 purchases

HVAC Manual Boss

Subscriptions1
  • Hvac Manual Boss$29.991 Month

Questions

Is VOS free?
VOS is free to download, with in-app purchases available.
Is HVAC Manual Boss free?
HVAC Manual Boss is free to download, with in-app purchases available.
Which has better reviews, VOS or HVAC Manual Boss?
VOS and HVAC Manual Boss are both rated 5.0 out of 5 on the App Store, from 8 and 1 ratings respectively.
Do VOS or HVAC Manual Boss have ads?
Neither VOS nor HVAC Manual Boss shows ads.
Which is updated more often, VOS or HVAC Manual Boss?
VOS ships an update every 3 days, and HVAC Manual Boss every 9 days. Most recently, VOS was updated on November 3, 2026 and HVAC Manual Boss on October 31, 2026.

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