# SimpleVenti — Easily calculate ventilation

> Easily calculate ventilation (iPhone/iPad app by Kotaro Tanaka.)

- Source: https://appshunter.io/ios/app/simpleventi/id6745219291 (this page in markdown: same URL + `.md`)
- Developer: [Kotaro Tanaka](https://appshunter.io/developer/1811339750)
- Category: Business
- Price: Free
- Age rating: 4+
- Requires: iOS 12.0 · 32 MB
- Languages: American English, Japanese
- Released: 2025-05-01
- Data updated: 2026-02-23
- User reviews in markdown: https://appshunter.io/ios/app/simpleventi/id6745219291/reviews.md

## What is SimpleVenti?

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.


## Version history (last 3 releases)

### 1.2 — 2025-07-13

【New Features】
• Added ventilation equipment functionality
• Enhanced ventilation calculation options


【Improvements】
• Enhanced calculation accuracy
• Improved user interface
• Performance optimization

【Bug Fixes】
• Minor bug fixes
• Improved stability

### 1.1 — 2025-05-04

Added localization settings to app info.

### 1.0 — 2025-05-02

No release notes.

## More apps by Kotaro Tanaka

- [Simple Psychro](https://appshunter.io/ios/app/simple-psychro/id6746312036)

All apps by Kotaro Tanaka: https://appshunter.io/developer/1811339750

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-02-23.*