ダクトサイズ計算Pro vs Ductulator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
ダクトサイズ計算Pro
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ダクトサイズ計算Proは、空調・換気設備工事で使用するダクトサイズを、風量・風速・本数から簡単に確認できる計算アプリです。 角ダクト、丸ダクトのサイズ確認に対応し、1本から10本までの本数比較、サイズからの風速確認、吹出口面積の確認、目安風速表の確認ができます。 現場での簡易確認、見積・設計補助、施工前のサイズ検討に役立ちます。 主な機能 ・風量から角ダクトサイズを確認 ・風量から丸ダクトサイズを確認 ・ダクト本数を増やした場合の比較 ・H固定時のW自動計算 ・アスペクト比の確認 ・サイズから実風速を確認 ・吹出口面積と吹出風速の確認 ・設計時の目安風速確認 ※本アプリは簡易計算用です。最終設計では、圧力損失、騒音、機外静圧、施工条件、設計図書、関係法令を確認してください。
Ductulator
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Stop guessing duct sizes. Ductulator turns your airflow into the exact round or rectangular duct size you need — plus the friction rate, right from the job site. Built for HVAC contractors and DIY installs alike: • Round and rectangular sizing from CFM and target velocity, fully free • Reverse mode — already have a duct size on hand? See what airflow it can carry (Pro) • Branch calculator — size a trunk and every branch run at once, with a warning if they don't add up (Pro) • Every duct material — Galvanized, Flex Duct, PVC, Fiberboard (Pro) • Save sizings by job and share a polished PDF with your crew (Pro) No account, no ads, no guesswork — just the numbers you need before you cut metal. --- Privacy Policy: https://fosterapps.com/duct/privacy/ Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: ダクトサイズ計算Pro at none against Ductulator's 2. ダクトサイズ計算Pro also leads on update cadence (every 2 days vs every 8 days). Ductulator's advantage is ads (none vs shown). On price, device support and iOS requirement 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. Ductulator sells 2 in-app purchases, starting at $3.99 per 7 days. ダクトサイズ計算Pro asks for nothing beyond the download.
ダクトサイズ計算Pro ships an update every 2 days, Ductulator every 8 days. Both last shipped on October 31, 2026.
| Parameter | ダクトサイズ計算Pro | Ductulator |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days — better | Every 8 days |
| Ads | Yes | No — better |
| In-app purchases | No — better | Yes |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details — not scored | ||
| Size | 34 MB | 29 MB |
| Age rating | 4+ | 4+ |
| Developer | takesi shutou | Foster Apps LLC |
In-app purchases
ダクトサイズ計算Pro
No in-app purchases
Ductulator
- Pro Weekly3 Days trial$3.997 Days
- Pro Yearly$19.991 Year
Questions
Is ダクトサイズ計算Pro free?
Is Ductulator free?
Do ダクトサイズ計算Pro or Ductulator have ads?
Which is updated more often, ダクトサイズ計算Pro or Ductulator?
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