# Prepware Instrument Pilot vs Mohr's CSA

The clearest difference is review sentiment: Mohr's CSA at 100% against Prepware Instrument Pilot's 38%. Mohr's CSA also leads on price ($2.99 vs $9.99). Prepware Instrument Pilot's advantage is chart position (#158 vs unranked) and iOS requirement (15.0 vs 26.5). On update cadence, ads, in-app purchases and device support there is nothing between them.

Prepware Instrument Pilot costs $9.99 and Mohr's CSA $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Prepware Instrument Pilot ships an update every 4 months, Mohr's CSA every 3 months. The most recent releases landed on October 22, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | Prepware Instrument Pilot | Mohr's CSA |
| --- | --- | --- |
| Price | $9.99 | **$2.99** |
| Rating | **[2.6 (45 ratings)](https://appshunter.io/ios/app/prepware-instrument-pilot/id338887882/reviews)** | — |
| Number of ratings | **45** | — |
| Positive reviews | 37.8% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 3 months** |
| Monetization | **Free** | Paid |
| Best chart rank | **#158** | — |
| Size | 36 MB | 13 MB |
| Requires iOS | **15.0** | 26.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ASA](https://appshunter.io/developer/334278379) | [DRH YAZILIM VE MUHENDISLIK HIZMETLERI LTD STI](https://appshunter.io/developer/914295588) |

## What reviewers say

### Prepware Instrument Pilot

[App page](https://appshunter.io/ios/app/prepware-instrument-pilot/id338887882)

**Currently charting:** #158 Top Paid · Education (US App Store)

Prepare for your FAA Knowledge Exam with flashcard-style reviews and practice tests. Study by subject or take a full practice exam to gauge your readiness.

**Highlights:** Flashcard-style review, Questions, answers, and explanations, Study by subject, Practice test simulation, FAA Knowledge Exam preparation

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

**In-app purchases:** none

**What reviewers like**

- 👍 Good value for money
- 👍 Offline functionality
- 👍 Helpful for passing written exams
- 👍 Simple interface
- 👍 Explanations provided

**What reviewers complain about**

- 👎 Outdated question bank
- 👎 Inaccurate questions/answers
- 👎 Missing core features
- 👎 Poor optimization for iPad
- 👎 Formatting issues

**Reported bugs**

- Text frequently cut off
- App cannot dynamically scale text
- Some questions missing figures
- Figures have nothing to do with the question
- Correct answers no longer shown in green

**Requested features**

- Ability to focus on previously incorrect answers
- Major update for functionality and display bugs
- Ensure all software is up to date with FAA question banks
- Add timer and number of questions selection
- Ability to eliminate questions already known


### 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


## Frequently asked questions

### Is Prepware Instrument Pilot free?

Prepware Instrument Pilot costs $9.99, with no in-app purchases.

### Is Mohr's CSA free?

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

### Do Prepware Instrument Pilot or Mohr's CSA have ads?

Neither Prepware Instrument Pilot nor Mohr's CSA shows ads.

### Which is updated more often, Prepware Instrument Pilot or Mohr's CSA?

Prepware Instrument Pilot ships an update every 4 months, and Mohr's CSA every 3 months. Most recently, Prepware Instrument Pilot was updated on October 22, 2026 and Mohr's CSA on October 8, 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.*