1. Convert Units for Free – #1 Unit Conversion
This free (yes, free) application lets you create your own unit conversions for anything you want, quickly and easily. Convert Units for Free is an essential tool that you’ll love and use everyday. Over 11 million users already do.
Good for number crunching and analysis, this colorful calculator offers three different modes. The scientific mode allows standard functions and operations like the basic arithmetical operations, power, logarithm, roots, and more.
3. Graphing Calculator
Useful for engineers and scientists, the Graphing Calculator turns the iPad into a high-resolution function plotter and scientific calculator. Some of its features include: quickly plotting and tracing multiple equations on the same graph, custom keyboard to speed up entering equations, pinch to zoom and drag or slide for scrolling the graph in real time, taking screen shots, and e-mailing graphs to yourself.
4. AutoCAD WS
Autodesk’s web and mobile app lets you view, edit, and share DWG drawings through a web browser or mobile device. AutoCAD WS has a number of features previously found only in AutoCAD’s desktop design software.
With Wolfram|Alpha on your iPhone or iPod touch, you can explore a vast world of knowledge through an app adapted for your ever-changing, on-the-go lifestyle. Use Wolfram|Alpha to discover new information about the world and to deliver expert knowledge into any facet of your mobile life.
Theodolite is a cool multi-function augmented reality app that serves as a compass, GPS, map, zoom camera (photo & movie), rangefinder, and two-axis inclinometer. Theodolite overlays real time information about position, altitude, bearing, range, and inclination on the live camera image of an iPhone or iPod Touch, like an electronic viewfinder. Uses are endless, and the app is great for hiking, boating, hunting, golf, sports, sightseeing, navigation, and finding your way around. Theodolite is used extensively by surveyors, geologists, architects, engineers, competitive sportsmen, military personnel, and search and rescue workers around the world.
This comprehensive database of screw/bolt information displays values for both U.S. and metric screws, including dimensions for nine standard head styles; 29 material grades including SAE, ASTM, and other materials; standard dimensions; tap sizes; clearance hole sizes; material strength; recommended torque values; clamp force; shear force; head markings; and standard head type dimensions.
8. Heat Input Calculator for welding
Heat Input Calculator for welding Application helps welding engineers, mechanical engineers and technicians perform their tasks easily and efficiently via specialized calculators.
9. Piping Abacus
PipingAbacus is the most advanced and powerful mobile app for piping information; it is the modern Pipe Fitter’s “Blue Book”. It is designed to be used by draftsman, designer, pipefitter (s), engineer, and construction personnel.
10. Mechanical Design and Analysis
This is the ultimate app for mechanical engineers! The MDF app gives you access to www.mechanicaldesignforum.com from your mobile device. Our popular discussion forums put a global network of mechanical engineers at your fingertips, allowing you to share knowledge, exchange ideas and make industry contacts. The MDF app also provides you with access to technical articles, including manufacturing process design guides and CAD tutorials.