# Prepware CFI vs Instrument Ground Instructor

The clearest difference is price: Instrument Ground Instructor at $4.99 against Prepware CFI's $9.99. Instrument Ground Instructor also leads on iOS requirement (11.0 vs 15.0). Prepware CFI's advantage is chart position (#194 vs unranked). On update cadence, ads, in-app purchases and device support there is nothing between them.

Prepware CFI costs $9.99 and Instrument Ground Instructor $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Prepware CFI ships an update every 4 months, Instrument Ground Instructor every 7 months. The most recent releases landed on October 13, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Prepware CFI | Instrument Ground Instructor |
| --- | --- | --- |
| Price | $9.99 | **$4.99** |
| Rating | **[2.4 (37 ratings)](https://appshunter.io/ios/app/prepware-cfi/id338889937/reviews)** | — |
| Number of ratings | **37** | — |
| Positive reviews | 32.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 7 months |
| Monetization | Free | — |
| Best chart rank | **#194** | — |
| Size | 31 MB | 102 MB |
| Requires iOS | 15.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [ASA](https://appshunter.io/developer/334278379) | [Bravo Zulu Apps LLC](https://appshunter.io/developer/1000879252) |

## What reviewers say

### Prepware CFI

[App page](https://appshunter.io/ios/app/prepware-cfi/id338889937)

**Currently charting:** #194 Top Paid · Education (US App Store)

Prepare for the 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:** Flashcard-style review, Questions, answers, and explanations, Study by subject, Practice tests, Comprehensive preparation tool

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

**In-app purchases:** none


### Instrument Ground Instructor

[App page](https://appshunter.io/ios/app/instrument-ground-instructor/id1366302133)

**In-app purchases:** none


## Frequently asked questions

### Is Prepware CFI free?

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

### Is Instrument Ground Instructor free?

Instrument Ground Instructor costs $4.99, with no in-app purchases.

### Do Prepware CFI or Instrument Ground Instructor have ads?

Neither Prepware CFI nor Instrument Ground Instructor shows ads.

### Which is updated more often, Prepware CFI or Instrument Ground Instructor?

Prepware CFI ships an update every 4 months, and Instrument Ground Instructor every 7 months. Most recently, Prepware CFI was updated on October 13, 2026 and Instrument Ground Instructor on October 3, 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.*