# iSolveModel vs SimplexLP

The clearest difference is price: SimplexLP at $3.99 against iSolveModel's $9.99. SimplexLP also leads on iOS requirement (14.1 vs 17.1). iSolveModel's advantage is update cadence (every 4 months vs every 12 months). On rating, review sentiment, ratings volume and ads there is nothing between them.

iSolveModel costs $9.99 and SimplexLP $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On the App Store both sit at effectively the same score — 5.0 for iSolveModel against 5.0 for SimplexLP. Both are backed by a comparable volume of ratings — 2 and 1 respectively. Written reviews are what separate them: 71% of iSolveModel's written reviews are positive against 67% of SimplexLP's.

iSolveModel ships an update every 4 months, SimplexLP every 12 months. The most recent releases landed on September 12, 2026 and June 5, 2026 respectively.

## The numbers

| Metric | iSolveModel | SimplexLP |
| --- | --- | --- |
| Price | $9.99 | **$3.99** |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/isolvemodel/id387627473/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/simplexlp/id1114880223/reviews) |
| Number of ratings | **2** | 1 |
| Positive reviews | **71.4% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 12 months |
| Monetization | Paid | Paid |
| Size | 5 MB | 4 MB |
| Requires iOS | 17.1 | **14.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [MINDTech](https://appshunter.io/developer/382887010) | [Axel Besser](https://appshunter.io/developer/790706426) |

## What reviewers say

### iSolveModel

[App page](https://appshunter.io/ios/app/isolvemodel/id387627473)

This app offers a powerful linear programming solver for iOS devices, utilizing the simplex algorithm and an integrated MIP solver for integer variables. It's designed for students and professionals in operations research and related fields, allowing easy model creation and sharing.

**Highlights:** Linear programming solver, Simplex algorithm, Integrated MIP solver, Sensitivity analysis, iTunes File Sharing, Email model/solution transfer, Text-based model documents

**Features:** macOS Compatibility

**In-app purchases:** none


### SimplexLP

[App page](https://appshunter.io/ios/app/simplexlp/id1114880223)

This app simplifies linear optimization problems with an objective function and constraints. It offers a graphical representation for problems with two variables, making it an ideal learning tool for students and teachers of the Simplex algorithm.

**Highlights:** Solves maximization and minimization problems, Handles unlimited variables and constraints, Supports ≤, ≥, and = inequalities, Provides graphical representation for 2-variable problems, Outputs calculations in fractions or decimals, Offers accurate calculations with fractions

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is iSolveModel free?

iSolveModel costs $9.99, with no in-app purchases.

### Is SimplexLP free?

SimplexLP costs $3.99, with no in-app purchases.

### Which has better reviews, iSolveModel or SimplexLP?

iSolveModel and SimplexLP are both rated 5.0 out of 5 on the App Store, from 2 and 1 ratings respectively.

### Do iSolveModel or SimplexLP have ads?

Neither iSolveModel nor SimplexLP shows ads.

### Which is updated more often, iSolveModel or SimplexLP?

iSolveModel ships an update every 4 months, and SimplexLP every 12 months. Most recently, iSolveModel was updated on September 12, 2026 and SimplexLP on June 5, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*