SwiftSize
Design Comfort Business iPhoneiPadiPod touch
SwiftSize is a paid Business app for iPhone and iPad by Design Comfort. Rated 4.0/5 from 3 ratings. Requires iOS 17.0. Updated October 23, 2026.
- Rating
- 4.0
- 3 ratings
- Price
- 9.99 USD
- on the App Store
- Size
- 2 MB
- Age 4+
- Updated
- Oct 23
- 2026 · v2.1.3
Screenshots
About SwiftSize
SwiftSize is an HVAC (heating, ventilation, and air conditioning) load calculator for residences. It is designed to very quickly measure off a home's exposures "on the fly" and produce accurate results for sizing heating and air conditioning equipment. Now generates a shareable PDF Report! It is designed to minimize the on-site engineering time required by the HVAC professional. Less time engineering means more one-on-one time with the customer! HVAC heat loads can be a cumbersome and time consuming and tend to distract from time spent consulting. SwiftSize addresses this problem by allowing complete heat loads to be performed in mere minutes. If it takes you more than 10 minutes with SwiftSize you're doing something wrong! SwiftSize is not a comprehensive room-by-room heat loss/heat gain/CFM calculator. If it were it would be SlowSize! It's intended for the equipment changeout market, not the new construction market.
What’s new
Version 2.1.3 · Updated October 23, 2026
Fixed Keyboard Layout issue and is now Apple Duo friendly
App privacy
The developer, Design Comfort, reported these privacy practices to Apple.
Data Not Collected
The developer does not collect any data from this app.
Alternatives to SwiftSize
Looking for apps like SwiftSize? Here are 6 similar apps on the App Store. The highest rated is Ductulator - Duct Sizing (4.7/5), and 3 of the 6 are free to download.
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HVAC Load Plus
2.8
-
HVAC Residential Load Calcs
3.0
-
LaserCalc Mobile
3.7
-
Ductulator - Duct Sizing
4.7
-
CoolCalc Scan
2.6
-
WR Mobile
4.0
| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| SwiftSize | 4.0 / 5 (3 ratings) | 9.99 USD | October 23, 2026 | |
| HVAC Load Plus | 2.8 / 5 (5) | 24.99 USD | Apr 24, 2026 | Compare |
| HVAC Residential Load Calcs | 3.0 / 5 (3) | 34.99 USD | Apr 20, 2026 | Compare |
| LaserCalc Mobile | 3.7 / 5 (6) | Free | Sep 16, 2026 | Compare |
| Ductulator - Duct Sizing | 4.7 / 5 (361) | 3.99 USD | Mar 24, 2026 | Compare |
| CoolCalc Scan | 2.6 / 5 (7) | Free | Oct 21, 2026 | Compare |
| WR Mobile | 4.0 / 5 (6) | Free | Oct 5, 2026 | Compare |
Compare SwiftSize with the top alternatives: ratings, updates, ASO score and keyword gaps →