Comparison

DuctCloud vs SimpleVenti

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head

Easily calculate ventilation

Free

💼 Business

No ratingsView app →

About

DuctCloud

Features

Read full description

DuctCloudはダクト部材に特化した画期的なECアプリです。スムーズなダクト部材の購入、効率的な発注管理、注文履歴の一括管理を実現します。DuctCloudで日々の業務がより快適かつスマートになります。

About

SimpleVenti

Features

Read full description

Professional-grade ventilation calculations and duct sizing made accessible to everyone. From HVAC professionals to DIY enthusiasts, this app simplifies complex engineering calculations. ■ Key Features • Automatic ventilation requirement calculation • Optimal duct sizing • Calculation history management • Intuitive user interface ■ Supported Calculations • Ventilation requirements (m³/h) • Duct cross-sectional area (circular & rectangular) • Air velocity & pressure loss • Various ventilation systems ■ Highlights • No technical knowledge required • Accurate calculation results • Offline functionality • Japanese & English support Perfect for architectural design, HVAC design, construction management, and more.

Screenshots

DuctCloud4 screens

SimpleVenti4 screens

Verdict

The call

The clearest difference is ads: DuctCloud at none against SimpleVenti's shown. On price, update cadence, in-app purchases and device support 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

DuctCloud ships an update every 4 weeks, SimpleVenti every 5 weeks. The most recent releases landed on September 9, 2026 and September 6, 2026 respectively.

Scorecard1 real difference · 5 level

DuctCloud versus SimpleVenti: the parameters behind the verdict, then further details
Parameter	DuctCloud	SimpleVenti
Price	Free	Free
Update frequency	Every 4 weeks — better	Every 5 weeks
Ads	No — better	Yes
In-app purchases	No	No
Devices	iPhone, iPad, iPod	iPhone, iPad, iPod
Requires iOS	12.0	12.0
Further details — not scored
Size	61 MB	32 MB
Age rating	4+	4+
Developer	FUKAGAWA CO., LTD.	Kotaro Tanaka

In-app purchases

None

DuctCloud

No in-app purchases

None

SimpleVenti

No in-app purchases

Questions

Is DuctCloud free?

DuctCloud is free to download, with no in-app purchases.

Is SimpleVenti free?

SimpleVenti is free to download, with no in-app purchases.

Do DuctCloud or SimpleVenti have ads?

SimpleVenti shows ads; DuctCloud does not.

Which is updated more often, DuctCloud or SimpleVenti?

DuctCloud ships an update every 4 weeks, and SimpleVenti every 5 weeks. Most recently, DuctCloud was updated on September 9, 2026 and SimpleVenti on September 6, 2026.

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