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★★★★★
Average rating on the App Store. Apple doesn't publish how many ratings each star has.
Where this app stands in Thailand, updated 9 Oct 2026
Top free
Not in this chart today
Top paid · All apps and games
#93 ▼12
| Date | Paid |
|---|---|
| 9 Oct 2026 | #93 |
| 8 Oct 2026 | #81 |
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The Duct Sizer is a productivity app developed by Nopparat Katkhaw. The app is a simplest and quickest ductulator. Perform quick calculation and accurate results. Use the finger slide for quick calculations. Shows equivalent round and rectangular duct sizes. Compatible with IP and SI units. We would very much like your feedback! Pleas contacts Facebook page: https://www.facebook.com/UP.Energy4You