Roofing Ventilation Calculator vs VoxSMS
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Roofing Ventilation Calculator
Calculate the necessary amount of ventilation products for an attic space. Input attic dimensions or square footage to receive results based on the NFA 1/300 rule for balanced ventilation.
- Attic dimension input
- Square footage input
- NFA 1/300 rule calculation
- Ventilation product quantity determination
- Balanced ventilation planning
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The Ventilation Calculator from CertainTeed is the ideal tool for quickly determining the amount of ventilation products needed to outfit an attic space with proper balanced ventilation. Simply enter the length and width of the attic space or the overall square footage of the space and the Ventilation Calculator produces results based upon the NFA 1/300 rule.
VoxSMS
Communicate via SMS using your dedicated business phone numbers. This app allows you to send and receive text messages directly from your mobile device, integrating seamlessly with your existing service.
- Send and receive SMS
- Use business phone numbers
- Mobile messaging
- Voxtelesys integration
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Send and receive text messages with your Voxtelesys phone numbers.
Screenshots
Verdict
The clearest difference is rating: VoxSMS at 5.0 against Roofing Ventilation Calculator's 3.0. Roofing Ventilation Calculator's advantage is update cadence (every 3 months vs every 10 months) and ratings volume (6 vs 1). On price, ads, in-app purchases and monetization model 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.
VoxSMS holds the better App Store score, 5.0 against 3.0. That said, the two scores are not equally well evidenced: Roofing Ventilation Calculator has 6 ratings behind it against 1, so its average is the more settled of the two.
Roofing Ventilation Calculator ships an update every 3 months, VoxSMS every 10 months. Both last shipped on October 24, 2026.
| Parameter | Roofing Ventilation Calculator | VoxSMS |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (6 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 6 — better | 1 |
| Update frequency | Every 3 months — better | Every 10 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.0 — better | 15.0 |
| Further details — not scored | ||
| Size | 34 MB | 55 MB |
| Age rating | 4+ | 4+ |
| Developer | Saint-Gobain | Textable LLC |
Customer experience
Roofing Ventilation Calculator
VoxSMS
In-app purchases
Roofing Ventilation Calculator
No in-app purchases
VoxSMS
No in-app purchases
Questions
Is Roofing Ventilation Calculator free?
Is VoxSMS free?
Which has better reviews, Roofing Ventilation Calculator or VoxSMS?
Do Roofing Ventilation Calculator or VoxSMS have ads?
Which is updated more often, Roofing Ventilation Calculator or VoxSMS?
Other comparisons
