# Mohr's CSA vs MaxwellsDemon

The clearest difference is update cadence: Mohr's CSA at every 3 months against MaxwellsDemon's every 9 months. MaxwellsDemon's advantage is price ($0.99 vs $2.99) and iOS requirement (14.4 vs 26.5). On ads, in-app purchases and device support there is nothing between them.

Mohr's CSA costs $2.99 and MaxwellsDemon $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Mohr's CSA ships an update every 3 months, MaxwellsDemon every 9 months. The most recent releases landed on September 22, 2026 and August 24, 2026 respectively.

## The numbers

| Metric | Mohr's CSA | MaxwellsDemon |
| --- | --- | --- |
| Price | $2.99 | **$0.99** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 9 months |
| Monetization | Paid | — |
| Size | 13 MB | 1 MB |
| Requires iOS | 26.5 | **14.4** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [DRH YAZILIM VE MUHENDISLIK HIZMETLERI LTD STI](https://appshunter.io/developer/914295588) | [Takao Akatsu](https://appshunter.io/developer/1530946331) |

## What reviewers say

### Mohr's CSA

[App page](https://appshunter.io/ios/app/mohrs-csa/id914295585)

This application provides an interactive tool for visualizing and analyzing stress states. It offers 2D and 3D stress analysis with detailed graphical representations and allows for direct stress transformations on Mohr's Circle. Users can also access a built-in formula sheet, export results to PDF, and save their input data.

**Highlights:** Interactive Mohr's Circle, 2D & 3D Stress Analysis, Stress Transformations, Built-in Formula Sheet, Export Results to PDF, Save & Restore Data

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### MaxwellsDemon

[App page](https://appshunter.io/ios/app/maxwellsdemon/id1612817641)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Mohr's CSA free?

Mohr's CSA costs $2.99, with no in-app purchases.

### Is MaxwellsDemon free?

MaxwellsDemon costs $0.99, with no in-app purchases.

### Do Mohr's CSA or MaxwellsDemon have ads?

Neither Mohr's CSA nor MaxwellsDemon shows ads.

### Which is updated more often, Mohr's CSA or MaxwellsDemon?

Mohr's CSA ships an update every 3 months, and MaxwellsDemon every 9 months. Most recently, Mohr's CSA was updated on September 22, 2026 and MaxwellsDemon on August 24, 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.*