Prepware Flight Engineer vs Calculate84 for Institutions
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Prepware Flight Engineer
Prepare for the FAA Knowledge Exam with flashcard-style review. Study questions, answers, and explanations by subject or take a practice test that mimics the real exam.
- Flashcard-style review
- Questions, answers, and explanations
- Study by subject
- Practice tests
- Comprehensive preparation
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Comprehensive preparation, study and test tool for the FAA Knowledge Exam. Flashcard style review of questions, answers and explanations included for you to study by subject or with a true-to-form practice test.
Calculate84 for Institutions
A modern graphing calculator designed for institutional use, offering fast, interactive touch-screen graphing with intelligent error messages and scrollable windows. It provides a user-friendly experience for educational settings.
- Interactive touch-screen graphing
- Scrollable windows
- Intelligent error messages
- Modern user interface
- Designed for institutions
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THIS IS DESIGNED FOR INSTITUTIONS ONLY If you are a student/individual see Calculate84 (https://apps.apple.com/us/app/calculate84/id1459712793) A MODERN GRAPHING CALCULATOR ON THE iPHONE 1. Fast, Interactive Touch-Screen Graphing 2. Everything is where you’d expect it to be 3. Scrollable windows (no more spamming the up arrow keys) 4. Intelligent error messages 5. Convenient WHY MAKE ANOTHER GRAPHING CALCULATOR APP? 1. We once relied on graphing calculators, and after installing countless, similar apps, we couldn’t find anything useable. Hence, we made our own. 2. Before launching on the App Store, we personally worked with a limited, yet sizable, number of students to continuously improve the app. Terms of Use (EULA): https://calculate84.com/terms-of-use
Screenshots
Verdict
The clearest difference is price: Prepware Flight Engineer at $4.99 against Calculate84 for Institutions's $17.99. Prepware Flight Engineer also leads on iOS requirement (15.0 vs 18.0). Calculate84 for Institutions's advantage is ratings volume (12 vs 1). On rating, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Prepware Flight Engineer costs $4.99 and Calculate84 for Institutions $17.99 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 Prepware Flight Engineer against 4.9 for Calculate84 for Institutions. That said, the two scores are not equally well evidenced: Calculate84 for Institutions has 12 ratings behind it against 1, so its average is the more settled of the two.
Prepware Flight Engineer ships an update every 4 months, Calculate84 for Institutions every 2 months. The most recent releases landed on September 22, 2026 and September 21, 2026 respectively.
| Parameter | Prepware Flight Engineer | Calculate84 for Institutions |
|---|---|---|
| Price | $4.99 — better | $17.99 |
| Rating | 5.0 (1 ratings) — better | 4.9 (12 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 1 | 12 — better |
| Update frequency | Every 4 months | Every 2 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 13 MB | 30 MB |
| Age rating | 4+ | 4+ |
| Developer | ASA | Century Light LLC |
Customer experience
Prepware Flight Engineer
Calculate84 for Institutions
In-app purchases
Prepware Flight Engineer
No in-app purchases
Calculate84 for Institutions
No in-app purchases
Questions
Is Prepware Flight Engineer free?
Is Calculate84 for Institutions free?
Which has better reviews, Prepware Flight Engineer or Calculate84 for Institutions?
Do Prepware Flight Engineer or Calculate84 for Institutions have ads?
Which is updated more often, Prepware Flight Engineer or Calculate84 for Institutions?
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