# Salut et Fraternité vs iSolveModel

The clearest difference is price: Salut et Fraternité at $1.99 against iSolveModel's $9.99. Salut et Fraternité also leads on review sentiment (91% vs 71%) and iOS requirement (15.0 vs 17.1). On rating, ratings volume, update cadence and ads there is nothing between them.

Salut et Fraternité costs $1.99 and iSolveModel $9.99 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 Salut et Fraternité against 5.0 for iSolveModel. Both are backed by a comparable volume of ratings — 4 and 2 respectively. Written reviews are what separate them: 91% of Salut et Fraternité's written reviews are positive against 71% of iSolveModel's.

Salut et Fraternité ships an update every 3 months, iSolveModel every 4 months. The most recent releases landed on September 5, 2026 and September 12, 2026 respectively.

## The numbers

| Metric | Salut et Fraternité | iSolveModel |
| --- | --- | --- |
| Price | **$1.99** | $9.99 |
| Rating | [5.0 (4 ratings)](https://appshunter.io/ios/app/salut-et-fraternite/id377076063/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/isolvemodel/id387627473/reviews) |
| Number of ratings | **4** | 2 |
| Positive reviews | **90.9% of reviews** | 71.4% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 4 months |
| Monetization | Paid | Paid |
| Size | 28 MB | 5 MB |
| Requires iOS | **15.0** | 17.1 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Brumaire](https://appshunter.io/developer/377076066) | [MINDTech](https://appshunter.io/developer/382887010) |

## What reviewers say

### Salut et Fraternité

[App page](https://appshunter.io/ios/app/salut-et-fraternite/id377076063)

This application converts dates between the Gregorian and French Republican calendars. It also displays decimal time and allows sharing of Republican dates via email or social media.

**Highlights:** Gregorian to Republican calendar conversion, Republican to Gregorian calendar conversion, Decimal time display, Share Republican dates, Information on Republican calendar history

**Features:** macOS Compatibility, Apple Watch app

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Salut et Fraternité free?

Salut et Fraternité costs $1.99, with no in-app purchases.

### Is iSolveModel free?

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

### Which has better reviews, Salut et Fraternité or iSolveModel?

Salut et Fraternité and iSolveModel are both rated 5.0 out of 5 on the App Store, from 4 and 2 ratings respectively.

### Do Salut et Fraternité or iSolveModel have ads?

Neither Salut et Fraternité nor iSolveModel shows ads.

### Which is updated more often, Salut et Fraternité or iSolveModel?

Salut et Fraternité ships an update every 3 months, and iSolveModel every 4 months. Most recently, Salut et Fraternité was updated on September 5, 2026 and iSolveModel on September 12, 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.*