250+ iOS apps curated and reviewed
The best engineering cookbook apps on iPhone average 4.0★ across 250+ titles — we've ranked them by what real users actually keep on their phones. Updated October 2026.
| # | App | Price | Rating | Ads | In-App Purchases | Updated | |
|---|---|---|---|---|---|---|---|
| 1 |  | Free | 4.5★ (6) | No | No | May 2026 | |
| 2 |  | Free | — | No | No | May 2026 | |
| 3 |  | Free | 3.0★ (6) | No | Yes | May 2026 | |
| 4 |  | Free | 3.0★ (1) | No | No | Sep 2026 | |
| 5 |  | Free | — | No | Yes | May 2026 | |
| 6 |  | Free | 3.0★ (1) | No | Yes | May 2026 | |
| 7 |  | Free | 4.3★ (42) | — | No | May 2026 | |
| 8 |  | Free | 4.5★ (171) | No | Yes | Sep 2026 |
A handy reference guide for mechanical designers, offering quick access to essential information on fan basics, system and duct design, motors, heating, refrigeration, and conversion factors.
This comprehensive reference app provides mechanical engineers with over 265 pages of content covering essential topics like thermodynamics, fluid mechanics, and machine design. It offers detailed derivations and explanations for both academic and professional use. The content is regularly updated to ensure users have access to the latest information.
