Comparison

LensLite Viewer vs HVAC Toolkit Lite

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

Head to head
About

LensLite Viewer

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Presenting LensLite, your gateway to immersive technologies. Transform your 3D Designs to immersive experiences, collaborate with stakeholders and get quicker design-sign offs, and save on time, cost and effort. Trezi LensLite is available for both desktop and mobile devices. You can login into LensLite and make use of product features curated to expedite the entire design journey. LensLite works seamlessly with 3D modeling authoring software like SketchUp, Revit, Rhino, and more. You can use the Workspace feature to transform 3D models of authoring software into an immersive design experience. You can either create an immersive session for self design review using Quick Session or invite multiple stakeholders like your design team, client, contractor etc. using the Create Session feature. You can add up to 20 participants who can join from desktop, mobile and VR headset. Participants you have invited can download the LensLite application and join the session using their email and session code. Every participant gets inside the same 3D model as an avatar and interacts with each other. You as a host can do a guided 3D design presentation using Gather all feature. Each participant can review design using tools like chat window, annotation, measurement. Such real-time interactive collaboration saves a significant amount of time and resources in a project's design. Trezi LensLite is equipped with tools to expedite the design signoff from various stakeholders. So what are you waiting for? Get in touch with us to become part of Treziverse, the first metaverse for the AEC industry.

About

HVAC Toolkit Lite

This tool assists HVAC engineers with design checks and quick calculations. It offers various tools for ducting friction loss, pipe sizing, ventilation, and heat load estimations, providing instructions and formulas for each calculation.

Highlights
  • Friction loss calculation
  • Pipe sizing
  • Ventilation calculations
  • Heat load estimation
  • Pump head calculation
  • Fan ESP calculation
  • Metric/Imperial units
  • English/Arabic language support
Features
Read full description

The HVAC ToolKit Lite is an easy-to-use app that has been created to assist HVAC engineers in checking their designs and making quick calculations and estimations. The app includes helpful calculation tools for calculating friction losses in ducting, pipe sizing, parking ventilation, staircase pressurization, and estimating heat loads, pump head, fan ESP, among others, where the user is able to enter the required inputs and is given the calculated output. Each tool also includes instructions and abbreviated formulas that have been used to calculate the results. The app can be set to metric or imperial units and/or to the English or Arabic language. Users are expected to have some knowledge and understanding of HVAC engineering in order to use the tools properly. Users are also expected to check that the results are within an acceptable range for their respective projects. If you come across any inconsistencies while using the app or have any recommendations for additional inclusions, please contact us.

Screenshots

LensLite Viewer4 screens
HVAC Toolkit Lite3 screens

Verdict

The call

The clearest difference is update cadence: HVAC Toolkit Lite at every 11 days against LensLite Viewer's every 2 months. HVAC Toolkit Lite also leads on iOS requirement (12.0 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

LensLite Viewer ships an update every 2 months, HVAC Toolkit Lite every 11 days. The most recent releases landed on October 27, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 7 level
LensLite Viewer versus HVAC Toolkit Lite: the parameters behind the verdict, then further details
ParameterLensLite ViewerHVAC Toolkit Lite
PriceFreeFree
Rating—5.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 2 monthsEvery 11 days — better
AdsNoNo
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.012.0 — better
Further details — not scored
Size411 MB61 MB
Age rating4+4+
DeveloperSMARTVIZS PRIVATE LIMITEDMohamad Jaber

In-app purchases

None

LensLite Viewer

No in-app purchases

None

HVAC Toolkit Lite

No in-app purchases

Questions

Is LensLite Viewer free?
LensLite Viewer is free to download, with no in-app purchases.
Is HVAC Toolkit Lite free?
HVAC Toolkit Lite is free to download, with no in-app purchases.
Do LensLite Viewer or HVAC Toolkit Lite have ads?
Neither LensLite Viewer nor HVAC Toolkit Lite shows ads.
Which is updated more often, LensLite Viewer or HVAC Toolkit Lite?
LensLite Viewer ships an update every 2 months, and HVAC Toolkit Lite every 11 days. Most recently, LensLite Viewer was updated on October 27, 2026 and HVAC Toolkit Lite on November 3, 2026.

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