# Instrument Test Prep vs AI CFI

The clearest difference is rating: Instrument Test Prep at 4.9 against AI CFI's 4.4. Instrument Test Prep also leads on update cadence (fortnightly vs every 2 months) and ratings volume (155 vs 31). AI CFI's advantage is iOS requirement (15.0 vs 17.1). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Instrument Test Prep sells 4 one-off in-app purchases and AI CFI sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

Instrument Test Prep holds the better App Store score, 4.9 against 4.4. That said, the two scores are not equally well evidenced: Instrument Test Prep has 155 ratings behind it against 31, so its average is the more settled of the two. Written reviews point the same way: 88% of Instrument Test Prep's written reviews are positive against 80% of AI CFI's.

Instrument Test Prep ships an update fortnightly, AI CFI every 2 months. The most recent releases landed on October 13, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Instrument Test Prep | AI CFI |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (155 ratings)](https://appshunter.io/ios/app/instrument-test-prep/id1456043080/reviews)** | [4.4 (31 ratings)](https://appshunter.io/ios/app/ai-cfi-flight-training-tools/id6745460036/reviews) |
| Number of ratings | **155** | 31 |
| Positive reviews | **87.5% of reviews** | 80.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 2 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 122 MB | 48 MB |
| Requires iOS | 17.1 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [Aeroapps Technology](https://appshunter.io/developer/923860276) | [KasTech Solutions LLC (U.S.)](https://appshunter.io/developer/1709822257) |

## What reviewers say

### Instrument Test Prep

[App page](https://appshunter.io/ios/app/instrument-test-prep/id1456043080)

Prepare for your FAA Instrument Rating Knowledge Test with a comprehensive question bank and detailed explanations. Customize study sessions, take simulated exams, and track your progress. An optional upgrade unlocks full ground school lessons and advanced features.

**Highlights:** Over 900 FAA questions with explanations, Customizable study sessions, Simulated FAA exams, Review missed questions, Track progress across devices, Study resources library

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Instrument Ground School Trial | Free | one-time |
| Instrument Rating Test Prep | $49.99 | one-time |
| Upgrade to Ground School | $129.99 | one-time |
| Instrument Ground School | $179.99 | one-time |


### AI CFI

[App page](https://appshunter.io/ios/app/ai-cfi-flight-training-tools/id6745460036)

This app provides AI-powered flight instruction, FAA practice tests, and air traffic control communication training. It offers 24/7 expert guidance to help aspiring and current pilots prepare for various licenses and ratings, reinforcing ground school knowledge.

**Highlights:** AI CFI Chatbot for real-time guidance, Realistic ATC communication practice, FAA Knowledge Test preparation, Progress tracking and study stats, Ground school support for Part 61/141

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Ai CFi Subscription | $19.99 | per month |
| Ai CFi Yearly Subscription | $119.00 | per year |


## Frequently asked questions

### Is Instrument Test Prep free?

Instrument Test Prep is free to download, with in-app purchases available.

### Is AI CFI free?

AI CFI is free to download, with in-app purchases available.

### Which has better reviews, Instrument Test Prep or AI CFI?

Instrument Test Prep is rated higher. Instrument Test Prep averages 4.9 out of 5 from 155 ratings, while AI CFI averages 4.4 from 31 ratings.

### Do Instrument Test Prep or AI CFI have ads?

Neither Instrument Test Prep nor AI CFI shows ads.

### Which is updated more often, Instrument Test Prep or AI CFI?

Instrument Test Prep ships an update fortnightly, and AI CFI every 2 months. Most recently, Instrument Test Prep was updated on October 13, 2026 and AI CFI on October 15, 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.*