VOS vs HVAC Manual Boss
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Remote assessments
- Remote diagnostics
- Problem-solving
- Intuitive interface
- Cross-industry application
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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.
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.
- 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
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• 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
Verdict
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
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.
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.
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.
| Parameter | VOS | HVAC Manual Boss |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (8 ratings) | 5.0 (1 ratings) |
| Positive reviews | 100.0% of reviews | 100.0% of reviews |
| Number of ratings | 8 — better | 1 |
| Update frequency | Every 3 days — better | Every 9 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases — better | Subscription |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 16.4 | 15.1 — better |
| Further details — not scored | ||
| Size | 56 MB | 39 MB |
| Age rating | 4+ | 4+ |
| Developer | Virtually OnSite LLC | John Kelley |
Customer experience
VOS
HVAC Manual Boss
In-app purchases
VOS
- VOS Basic$14.991 Month
- VOS Business$49.991 Month
HVAC Manual Boss
- Hvac Manual Boss$29.991 Month








