They are all designed with a simulated tape measure method where there won't be any digits and decimal point keystrokes. It can handle up to 40 sets of different lengths and it satisfies the needs for most of the large size fabricating shops. Most of the time the cutting tasks or material estimations have to be calculated on job site other than office where you should be able to figure out how to cut the pieces with the best optimization in a fast paced environment. This slick mobile app in your own pocket can easily provide you a good cutting pattern with a super fast speed even for large sets of lengths (up to 40 sets for the pro version). It definitely can improve your productivity and save money for the materials concurrently. Apart from generating a good cutting pattern, it also provides the details of waste percentage and left overs of the raw materials where they can be reused for other future projects. Other benefits such as: 1. Short learning curve - two videos are included showing the actual operations, one for metric and one for imperial. 2. Super fast speed - it is utilized an advanced alogrithm with the best combinatons and also iterations methods. 3. Mobility - you can carry this app at the job site and email the results out for your office or customers. 4 Concised report - it consists of cutting pattern, waste % and left over for each stock length(raw material). 5. Large number of input data - can handle up to 40 sets of lengths. 6. Saving money for materials and engineering time. Pay back your project is extremely fast. 7. Sound supported - it will guide you through the entire operation. 8. Kerf(blade width) is included in calculations. 9. Error codes - they are used to verify and confirm the input lengths and make sure they are ok for optimization. Such as no duplicates, individual lengths should be less than stock length, quantity missing etc., 10. Input lengths are all in a standardized format by simulating the unique tape measure input system. No more decimal points. 11. It provides values to the professional applications, such as manufacturing, estimating, custom service and sales. Especially, it is an excellent tool for aluminum framings, windows and curtain walls business where the materials savings are essential. 12. 3 precision levels from 1/16th of an inch to 1/64th of an inch.