# iSolveModel > Linear programming solver for iOS with simplex and MIP algorithms. (iPhone/iPad app by MINDTech.) - Source: https://appshunter.io/ios/app/isolvemodel/id387627473 (this page in markdown: same URL + `.md`) - Developer: [MINDTech](https://appshunter.io/developer/382887010) - Category: Education, Business - Price: $9.99 - Rating: 5.00/5 from 2 App Store ratings · 7 written reviews indexed - Age rating: 4+ - Requires: iOS 17.1 · 5 MB - Languages: American English, Canadian French - Released: 2010-08-26 - Data updated: 2026-06-05 - Monetization: paid - User reviews in markdown: https://appshunter.io/ios/app/isolvemodel/id387627473/reviews.md ## What is iSolveModel? 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 ## Key features - Linear programming solver - Simplex algorithm - Integrated MIP solver - Sensitivity analysis - iTunes File Sharing - Email model/solution transfer - Text-based model documents ## Recent user reviews (7 of 7) All indexed reviews: https://appshunter.io/ios/app/isolvemodel/id387627473/reviews.md ### 5/5 — Extraordinarily Useful for Simplex LP Modeling *2024-03-04, version 4.1* 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. ### 5/5 — I liked it _ it works *2019-04-04, version 3.7* Wanted to double check a cow dairy feed optimization model I used to help my brother who is a farmer. It’s been a while since I got my Operations Research masters degree. Linear programming came back to me after using iSolveModel. It worked for me. Keep up the good work. What an amazing tool. Hail to Professor Dantzig who invented the simplex method. ### 5/5 — Spot on useful *2019-02-06, version 3.7* If you're a Simplex LP geek, this is absolutely positively for you. If you don't know what linear programming is, this is not for you. If you want to learn linear programming, start with Excel (Solver) then move over to this. The coolest thing about this app is that you can actually code in modeling notation and run it in about half the time it takes you to model it in Excel. ### 4/5 — Nice package *2015-09-23* Very nice package, easy to use and with integer handling. I like it. ### 5/5 — Excellent linear programming app *2013-03-28* This is a powerful app for solving linear programming problems. It will deal with thousands of variables and constraints, and can use integer variables and zero-one integer variables. I have solved many lp problems on it, and the results are fast and accurate. Strongly recommended. The developer has also responded quickly and positively to my questions and suggestions. ### 3/5 — I like it and it's worth the money, but needs improvement *2012-12-09, version 3.4* 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. ### 1/5 — Don't buy this *2012-02-13, version 2.0* 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. ## Frequently asked questions about iSolveModel ### What is iSolveModel? iSolveModel is a mathematical model solver for iOS devices that specializes in linear programming using the simplex algorithm and an integrated MIP solver for integer variables. It's designed for students and professionals in operations research and related fields. ### What devices does iSolveModel support? iSolveModel supports all iOS devices, including iPhone, iPad, and iPod Touch. It is designed to work in all device orientations. ### How much does iSolveModel cost? iSolveModel is a paid application, available for $9.99. This one-time purchase grants access to all its features without further costs. ### Can I share my models and solutions with iSolveModel? Yes, you can transfer model documents via iTunes File Sharing. Mathematical models and their solutions can also be sent directly by email. Solution documents are provided in HTML format. ### What are the limitations of iSolveModel? The number of decision variables and constraints in iSolveModel is only limited by the available memory of your device. It offers sensitivity analysis reports for pure linear models. ### How often is iSolveModel updated? The latest version of iSolveModel is 4.1, last updated on December 20, 2023. This indicates the app is actively maintained by the developer. ### Is iSolveModel suitable for beginners? Yes, iSolveModel is described as easy-to-use, with modeling that resembles textbook examples and a fast learning curve. This makes it accessible for students and those new to linear programming. ### Does iSolveModel have ads? No, iSolveModel does not contain advertisements. As a paid application, it provides an ad-free experience for users. ## Version history (last 5 releases) ### 4.1 — 2023-12-20 Updated to iOS/iPadOS 17. MIP Solver upgraded to 5.7.1 ### 4.0 — 2020-11-13 Updated to iOS/iPadOS 14. Minor bug fixes. ### 3.9 — 2020-06-28 iOS 13 update including dark mode and icons as SF Symbols. ### 3.8.1 — 2020-03-04 Bug fix when exporting a solution. iCloud support for model and solution file management. Horizontal scrolling of solution is fixed. Dark mode is supported if the app is run under iOS 13. ### 3.8 — 2020-02-14 Compatibility with iOS 12.4 so this update supports non-iOS 13 iPhone/iPad models. ## Apps similar to iSolveModel | App | Rating | Price | Category | | --- | --- | --- | --- | | [SQL-ER-Diagram](https://appshunter.io/ios/app/sql-er-diagram/id1625280998) | — | Free | Education | | [SimplexLP](https://appshunter.io/ios/app/simplexlp/id1114880223) | 5.0 (1) | $3.99 | Education | | [SQL-ER-Diagram Pro](https://appshunter.io/ios/app/sql-er-diagram-pro/id1625278308) | 1.0 (1) | $5.99 | Education | | [LinearSolver](https://appshunter.io/ios/app/linearsolver/id895469797) | 3.0 (1) | $1.99 | Education | | [Equation-Solver](https://appshunter.io/ios/app/equation-solver/id1618982230) | — | Free | Education | | [Simplex Optima](https://appshunter.io/ios/app/simplex-optima/id1667878232) | — | $2.99 | Education | ## More apps by MINDTech - [iSolveWaiting](https://appshunter.io/ios/app/isolvewaiting/id569581812) All apps by MINDTech: https://appshunter.io/developer/382887010 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*