# Prepware Aviation Maintenance vs Ultrasonic Study Guide

The clearest difference is price: Prepware Aviation Maintenance at $9.99 against Ultrasonic Study Guide's $14.99. Prepware Aviation Maintenance also leads on chart position (#3 vs unranked) and iOS requirement (15.0 vs 18.5). On update cadence, ads, in-app purchases and device support there is nothing between them.

Prepware Aviation Maintenance costs $9.99 and Ultrasonic Study Guide $14.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Prepware Aviation Maintenance ships an update every 4 months, Ultrasonic Study Guide every 7 months. The most recent releases landed on September 28, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Prepware Aviation Maintenance | Ultrasonic Study Guide |
| --- | --- | --- |
| Price | **$9.99** | $14.99 |
| Rating | **[3.8 (370 ratings)](https://appshunter.io/ios/app/prepware-aviation-maintenance/id338893931/reviews)** | — |
| Number of ratings | **370** | — |
| Positive reviews | 53.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 7 months |
| Monetization | Free | — |
| Best chart rank | **#3** | — |
| Size | 15 MB | 2 MB |
| Requires iOS | **15.0** | 18.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [ASA](https://appshunter.io/developer/334278379) | [Skaggs Media LLC](https://appshunter.io/developer/1836684180) |

## What reviewers say

### Prepware Aviation Maintenance

[App page](https://appshunter.io/ios/app/prepware-aviation-maintenance/id338893931)

**Currently charting:** #3 Top Paid · Education, #81 Top Paid (US App Store)

Prepare for your FAA Knowledge Exam with this comprehensive study and test tool. It offers flashcard-style review of questions, answers, and explanations, allowing you to study by subject or take realistic practice tests.

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

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

**In-app purchases:** none

**What reviewers like**

- 🚀 Passed All Three Tests
- 👍 Helpful for A&P Studying
- 💡 Great for Test Prep
- 👍 Useful Tool

**What reviewers complain about**

- 🐛 Grading/Exiting Issues
- 🐛 Outdated Questions
- 🐛 Inconsistent Functionality
- 🐛 Lacking Customization
- 🐛 Difficult Navigation

**Reported bugs**

- Incorrect Answers Marked as Correct
- Grading and Exiting Issues
- Inconsistent Question Formatting Across Platforms
- Lag and Freezing on Newer Devices

**Requested features**

- Randomize Answer Order
- Separate Missed Questions
- Ability to Create Custom Quizzes
- Improved Reporting and Analytics
- Accessibility Improvements for Colorblind Users


### Ultrasonic Study Guide

[App page](https://appshunter.io/ios/app/ultrasonic-study-guide/id6752231982)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Prepware Aviation Maintenance free?

Prepware Aviation Maintenance costs $9.99, with no in-app purchases.

### Is Ultrasonic Study Guide free?

Ultrasonic Study Guide costs $14.99, with no in-app purchases.

### Do Prepware Aviation Maintenance or Ultrasonic Study Guide have ads?

Neither Prepware Aviation Maintenance nor Ultrasonic Study Guide shows ads.

### Which is updated more often, Prepware Aviation Maintenance or Ultrasonic Study Guide?

Prepware Aviation Maintenance ships an update every 4 months, and Ultrasonic Study Guide every 7 months. Most recently, Prepware Aviation Maintenance was updated on September 28, 2026 and Ultrasonic Study Guide on September 20, 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.*