Comparison

DuctChecker vs AnzenAI

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

Head to head
About

DuctChecker

Easily calculate duct dimensions using various engineering methods like constant pressure, static pressure regain, total pressure, and velocity. This tool simplifies complex duct design calculations, typically found in flow diagrams or slide rules.

Highlights
  • Constant pressure method calculation
  • Static pressure regain method
  • Total pressure method
  • Velocity method
  • Duct dimension determination
  • Simplified duct design
Features
Read full description

To determine the size of the duct constant pressure method, static pressure regain method, total pressure method, velocity method. Generally uses constant pressure method. This constant pressure method is how to determine the duct dimensions using the same value per 1 m on all duct friction loss. Usually determined by flow diagrams or duct design for slide rules. You can easily determine the duct by using this program.

About

AnzenAI

Features
Read full description

Safety AI β€” Supporting Construction Site Safety and Compliance with AI Safety AI is an AI-powered safety and compliance management app designed specifically for the construction industry. Leveraging over 40 years of on-site experience, it simplifies risk visualization, real-time work monitoring, and automated report creationβ€”all from a mobile device. From detecting risks in daily reports to managing weekly and monthly compliance, Safety AI enhances both safety and efficiency on the job site. It is a trusted partner for all stakeholders, including workers, site supervisors, and safety managers. Key Features β€’ Real-time Work Monitoring: Use a smartphone camera to monitor work, with AI detecting risks in real time. β€’ Automated Daily Report Creation: Eliminate the need for paper reports; instantly record and share on-site conditions. β€’ Compliance Dashboard: Visualize site safety conditions on a weekly or monthly basis. β€’ Risk Summaries and Alert Notifications: Smart alerts and summaries tailored to on-site conditions. β€’ Ideal for Small and Medium-Sized Businesses: Lightweight, scalable, and perfectly suited for Japan’s construction SMBs. Why Choose Safety AI? Developed through collaboration between industry experts and AI engineers, Safety AI is more than just an appβ€”it’s a 24/7 safety partner dedicated to supporting your job site.

Screenshots

DuctChecker3 screens
AnzenAI4 screens

Verdict

The call

The clearest difference is price: AnzenAI at Free against DuctChecker's $6.99. AnzenAI also leads on update cadence (every 3 weeks vs every 4 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS

CostPrice Β· In-app purchases Β· Ads Β· Monetization

AnzenAI is free to download; DuctChecker costs $6.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

DuctChecker ships an update every 4 months, AnzenAI every 3 weeks. The most recent releases landed on September 7, 2026 and September 9, 2026 respectively.

Scorecard2 real differences Β· 6 level
DuctChecker versus AnzenAI: the parameters behind the verdict, then further details
ParameterDuctCheckerAnzenAI
Price$6.99Free β€” better
Positive reviews0.0% of reviewsβ€”
Update frequencyEvery 4 monthsEvery 3 weeks β€” better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidβ€”
DevicesiPhone, iPad, iPod β€” betteriPhone, iPod
Requires iOS15.0 β€” better15.1
Further details β€” not scored
Size23 MB19 MB
Age rating4+4+
DeveloperAIR DESIGN, INC.Uttam Dwivedi

In-app purchases

None

DuctChecker

No in-app purchases

None

AnzenAI

No in-app purchases

Questions

Is DuctChecker free?
DuctChecker costs $6.99, with no in-app purchases.
Is AnzenAI free?
AnzenAI is free to download, with no in-app purchases.
Do DuctChecker or AnzenAI have ads?
Neither DuctChecker nor AnzenAI shows ads.
Which is updated more often, DuctChecker or AnzenAI?
DuctChecker ships an update every 4 months, and AnzenAI every 3 weeks. Most recently, DuctChecker was updated on September 7, 2026 and AnzenAI on September 9, 2026.

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