Construction Instruction Ci vs Lomanco Vent Tools
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Construction Instruction Ci
Access a vast library of videos and articles on building and construction. Get instant, reliable information on products, materials, and installation methods from experienced professionals. Explore building science and find best practices anytime, anywhere.
- High-quality videos and articles
- Product and material information
- Installation methods
- Technical data
- Step-by-step best practices
- Searchable content
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Large collection of high quality videos and articles for building and construction professionals. The Ci app was created by a team of independent building experts with over 60 years of combined building experience. This application provides builders and contractors instant and reliable information on products and materials, installation methods, technical data and much more. Better building science, anytime, anywhere. Innovative solutions are rapidly emerging from all quarters: policies, certifications, research, education, and manufacturing. Building science integrates these innovation into the context of the whole house system. Now, homeowners, remodelers, builders, designers, architects and manufacturers can access useful, easy step-by-step best practices anytime, anywhere. Enter any search term to begin exploring building science or finding products. Enter a manufacturer’s name, a brand product name, or a general category of interest-- all will quickly take you to meaningful results and useful information. You will find a list of generic and brand products. Selecting any one of these calls up instructions, product information, and building science resources.
Lomanco Vent Tools
Calculate the number of roof vents needed for a balanced attic ventilation system. This app helps determine intake and exhaust options, roof pitch, and soffit panel requirements. It also provides product information and tools for Whirlybird installations.
- Ventilation Calculator
- Soffit Panel Tool
- Whirlybird Pitch Tool
- Product Information
- Roof pitch calculation
- Attic ventilation balancing
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Lomanco Vent Tools gives contractors, installers, and homeowners quick access to practical roof ventilation tools from Lomanco. Use the app to calculate balanced attic ventilation, estimate soffit panel needs, check roof pitch, identify the correct Whirlybird® base pitch, and access Lomanco product information from one convenient place. Lomanco Vent Tools includes: • Vent Calculator Calculate how many Lomanco intake and exhaust vents are needed for a properly balanced attic ventilation system. • Soffit Panel Tool Estimate soffit panel requirements and help diagnose inadequate intake ventilation. • Whirlybird® Pitch Tool Measure roof pitch, determine the correct Whirlybird® base number, and save/share a photo with roof pitch information. • Vent Resources Access Lomanco product information, ventilation resources, support links, and related tools. Whether you are planning a roof ventilation job, checking an existing installation, or working in the field, Lomanco Vent Tools helps keep the information you need close at hand.
Screenshots
Verdict
The clearest difference is rating: Construction Instruction Ci at 4.9 against Lomanco Vent Tools's 4.5. Construction Instruction Ci also leads on ratings volume (60 vs 11). Lomanco Vent Tools's advantage is review sentiment (88% vs 71%) and iOS requirement (15.0 vs 17.2). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.
Construction Instruction Ci holds the better App Store score, 4.9 against 4.5. That said, the two scores are not equally well evidenced: Construction Instruction Ci has 60 ratings behind it against 11, so its average is the more settled of the two. Written reviews complicate that: 71% of Construction Instruction Ci's written reviews are positive against 88% of Lomanco Vent Tools's, so the app with the better star average is not the one people write more warmly about.
Construction Instruction Ci ships an update every 3 months, Lomanco Vent Tools every 2 months. The most recent releases landed on October 23, 2026 and October 24, 2026 respectively.
| Parameter | Construction Instruction Ci | Lomanco Vent Tools |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (60 ratings) — better | 4.5 (11 ratings) |
| Positive reviews | 71.4% of reviews | 87.5% of reviews — better |
| Number of ratings | 60 — better | 11 |
| Update frequency | Every 3 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 17.2 | 15.0 — better |
| Further details — not scored | ||
| Size | 7 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Construction Instruction Productions, LLC | Lomanco, Inc. |
Customer experience
Construction Instruction Ci
Lomanco Vent Tools
In-app purchases
Construction Instruction Ci
No in-app purchases
Lomanco Vent Tools
No in-app purchases





