iSolveModel 4+

Name: iSolveModel
Price: 9.99 USD
Rating: 5 (2 reviews)
Author: MINDTech

MINDTech

Diseñada para iPad

- 5.0 • 2 calificaciones

- $9.99

Descripción

Looking for a mathematical model solver running on your iPad/iPhone/iPod Touch? This is iSolveModel, an easy-to-use linear programming optimizer running on iPad as well as on iPhone and using the simplex algorithm method with pivot as the main solver engine as well as an integrated MIP solver for 0-1 variables and integer numbers. The purpose of this application is to provide a linear programming solver for the iPad/iPhone/iPod Touch community as well as for students and teachers, particularly for those in Operations Research / Operations Management / Industrial Engineering or related courses (college/undergraduate students).

Features:
- Number of decision variables and constraints only limited by the available memory of the device
- Sensitivity analysis reports on variable coefficients and right-hand side when solving pure linear models
- Documents can be transferred via iTunes File Sharing
- Mathematical models and solutions can be sent by email
- Model documents are text files, no proprietary format
- Solution documents as HTML
- Supports all device orientations

Benefits:
- Affordable
- Easy-to-use modeling, models are like the ones in textbooks
- Fast learning curve

20 dic 2023

Versión 4.1

Updated to iOS/iPadOS 17.
MIP Solver upgraded to 5.7.1

5.0 de 5

2 calificaciones

Extraordinarily Useful for Simplex LP Modeling

Full disclosure: if you don’t know what a Simplex Linear model is, and have no interest in it, then this is not for you. However, if you would like to learn about optimizing supply chains (or you have a supply chain that needs to be optimized) then this and its desktop piece are extraordinarily useful. You can learn LP in Excel. Then when you “graduate” from that, you’ll find something like this where you can use meaningful variable names extremely valuable. I am a professor and have used this for the past 10 years. There’s nothing better anywhere.

I like it and it's worth the money, but needs improvement

This is a fairly simple app for solving linear programs. I haven't thrown anything too big or too complex at it, but it's handled everything fine so far.

What definitely needs improvement is the user interface. I'm not too lazy to type in the model, but that's really clunky compared to the user interfaces of Hamdy Taha's little utility TORA (which is included with his book) or the little Java applet included with the Hillier and Lieberman book. Maybe if the developer looks at one or both of those programs, he'll see what I mean.

But there's an even more important improvement that is easier to make, and doesn't require a big UI overhaul. In the course of entering an LP model with this app, the user must switch back and forth between THREE iPad keyboards: alphabetic, numeric, and symbolic. That is clunky and a half!

Look, those are my complaints. Overall, it's good app and I'm glad that I bought it. But some UI improvements would bring it into the 21st century instead of looking like the iPad port of something George Dantzig might have used back in the 1950s.

Don't buy this

This application simply doesn't work. It just crashes when trying to solve a model entered. Even trying to use the model that's already entered when you first open the program doesn't work, and it just crashes the app. This does nothing, and is basically just a waste of $5.

Another reason not to buy it? A version (that has yet to crash for me) of this is on OS X and is free. Pretty stupid.

MINDTech, que desarrolló esta app, indicó que entre las prácticas de privacidad de la app, pueden incluirse el manejo de datos que se describe a continuación. Para obtener detalles, consulta la política de privacidad del desarrollador.