About this app
The Engineering Cookbook is a convenient reference guide for mechanical designers. It provides "fingertip" access to frequently needed information, including: • Fan Basics • System Design • Duct Design • Motors & Drives • Heating & Refrigeration • Formulas & Conversion Factors
Latest release
What’s New
This app has been updated by Apple to prepare for watchOS 27 compatibility. No new features are included. Updated content and new UI design!
Audience growth
Ratings growth
Baseline captured. Growth appears after the crawler observes a changed rating count.
Momentum comes from crawler snapshots for the tracked storefront. “Viral growth signal” means unusually fast recent rating gains; it is an indicator, not download data.
Price tracking
Price intelligence
First snapshot captured. The trend line starts after the next crawler price observation.
- First observed Sep 7, 2026 · 12:57 AM Free
Screenshots
