ダクト計算 Pro

Name: ダクト計算 Pro
Author: witty apps

Livewitty apps74 apps · 7.8K installsToolsFreecom.wittyapps.ductcalcjp

Calculates duct size, airflow, static pressure, and air outlets. One-time purchase, no ads, offline compatible.

Alert me ★ Watch Open in Play ↗

Total installs: 71
Installs / day: 0
Rating: —★
Released: 16 Jul 2026
Last update: 4 Sept 2026
Countries: —

Install history

exact counter from Google Play

30dAll

Installs per day · last 90 days

Change timeline

Full history

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Data safety

declared by the developer on Google Play

No data shared with third parties
Collects data App activity and App info and performance
Data is encrypted in transit
No way to ask for data deletion

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

3 in 1 group

0 Sensitive0 Notable3 Routine

OtherRoutine3

Access to miscellaneous device features that don't fit other categories

Check whether you are online and whether you use Wi-Fi or mobile dataview network connections · ACCESS_NETWORK_STATE
Connect to the internet to load content and send datafull network access · INTERNET
Check with Google Play that you got this app legitimatelyGoogle Play license check · com.android.vending.CHECK_LICENSE

Read more · all 3 permissions Show less

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Full description

現場でも設計でも、ダクトの計算をこれ一つで。ダクト計算 Pro は空調・換気設計で毎日使う計算を、完全オフラインでスマホに収めました。 ■ 無料でそのまま使える・ダクトサイズ選定（等摩擦法・円形）— 風量と単位摩擦損失から必要径を算出し、スパイラルダクトの推奨サイズまで表示・単位変換 — 風量・風速・断面積を相互換算。m³/min・m³/h・L/s をワンタップ切替 ■ Pro でさらに・角ダクト変換 — 相当直径から長辺×短辺（50mm丸め）を算出、アスペクト比の警告付き・風量逆算 — ダクト径＋風速、またはダクト径＋摩擦損失から風量を逆算・制気口選定 — 風量とネック風速からネックサイズ・有効面積・到達距離の目安を算出・静圧計算 — 直管損失＋継手（エルボ・分岐・拡大縮小）の局部損失を合計 ■ 実務に合わせた設計・風量単位は m³/min・m³/h・L/s、寸法は mm — 日本の設計慣行そのまま・計算根拠を各画面で表示 — 何をどう出したかが分かる・結果はコピーして手元のメモや図面に貼り付け可能 ■ 現場でも設計でも・完全オフライン — 電波の届かない機械室や新築現場でも動作・大きめの操作系、画面は消えない（wakelock）、アカウント不要・入力値は端末の外に出ません ■ 買い切り無料版はダクトサイズ選定と単位変換をフル機能で収録（機能制限なし）。ダクト計算 Pro は一度の買い切りで、角ダクト変換・風量逆算・制気口選定・静圧計算を解除します。サブスクなし。広告なし。機能の後出し削除もなし。参考計算です。実施設計は関連基準（空気調和・衛生工学便覧、ASHRAE Fundamentals 等）と各製品カタログで必ず検証してください。

What's new

・ホーム画面のレイアウトを見やすく整理しました。・その他、細かな不具合を修正しました。

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