EngiTools Pro
Kui Yan Marc YU Reference iPhoneiPadiPod touch
EngiTools Pro is a free Reference app for iPhone and iPad by Kui Yan Marc YU. Requires iOS 13.0. Updated June 22, 2026.
- Price
- Free
- on the App Store
- Size
- 27 MB
- Age 4+
- Updated
- Jun 22
- 2026 · v1.0.8
Screenshots
About EngiTools Pro
EngiTools Pro - The Ultimate Engineering Pocket Reference Stop wasting time searching through heavy handbooks, scattered PDFs, or unreliable websites. EngiTools Pro is the essential, all-in-one productivity app designed specifically for Mechanical, HVAC, Piping, and Civil Engineers. Whether you are on-site, in a meeting, or drafting in the office, get instant access to precise engineering data, dimensional references, and complex calculations right in your pocket. CORE FEATURES: Comprehensive Unit Converter • Convert intuitively across a massive database of engineering units. • Supports scientific notation and smart formatting for high-precision results. • Includes categories for Length, Area, Volume, Mass, Pressure, Energy, Power, and more. HVAC & Psychrometrics • Psychrometric Chart Calculator: Instantly calculate Enthalpy, Dew Point, Humidity Ratio (w), Absolute Humidity, and Density by inputting Dry Bulb and RH/WB. • Fresh Air Requirement (ASHRAE 62.1-2022): Look up required outdoor air rates (L/s·person, cfm/ft²) across various room types instantly. Supports both SI and IP units. Piping & Flange Reference • Pipe Thickness & Weight: Quickly determine Outer/Inner Diameter, Wall Thickness, and Weight per meter/foot across different nominal sizes (DN/NPS) and schedules. • Flange Dimensions (BS 1092-1): Comprehensive lookup for Weld-neck flanges (Raised face). Get exact PCD, bolt hole diameters, neck dimensions, and bolting requirements for various Pressure Ratings (PN). Fastener Dimensions (Bolt, Nut, Washer) • Accurate geometric data for Hexagon Head Bolts, Screws, Nuts, and Flat Washers. • Look up pitch, width across flats (s), width across corners (e), head height (k), and thread lengths based on metric sizes. WHY CHOOSE ENGITOOLS PRO? • Blazing Fast & Offline: No internet connection required. Get your data instantly, even in deep basements or remote sites. • Built for Professionals: Data is sourced from recognized industry standards (ASHRAE, BS, etc.). • Sleek UI: Optimized for both Light and Dark modes to reduce eye strain during long working hours. Auto-scales perfectly to your screen size. • No Interruptions: A clean, distraction-free environment tailored for engineering workflows. Upgrade your engineering toolkit today. Work smarter, calculate faster, and design with confidence using EngiTools Pro! (Note: EngiTools Pro is intended for general reference. Users should always verify calculations with official standards for critical engineering designs.)
What’s new
Version 1.0.8 · Updated June 22, 2026
-New Added Calculator Function
App privacy
The developer, Kui Yan Marc YU, reported these privacy practices to Apple.
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Identifiers: Device ID
Data Not Linked to You
The following data, which may be collected but is not linked to your identity, may be used for the following purposes:
- Identifiers: Device ID
Used for: Third-Party Advertising
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| App | Rating | Price | Last updated | Compare |
|---|---|---|---|---|
| EngiTools Pro | – | Free | June 22, 2026 | |
| Equation Encyclopedia | – | Free | May 17, 2026 | Compare |
| ABRAMS STEEL GUIDE® | 5.0 / 5 (1) | Free | Mar 16, 2026 | Compare |
| Guide2Inspections | – | Free | Oct 29, 2026 | Compare |
| Easy Sail Trim | 5.0 / 5 (2) | Free | Nov 27, 2023 | Compare |
| Chemical Equation Balancer App | 4.6 / 5 (17) | Free | Jun 10, 2024 | Compare |
| Yomikko: Learn Japanese | 4.8 / 5 (11) | Free | Oct 12, 2026 | Compare |
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