# ATCPrep.com™ (ATSA Test Prep) vs Instrument Test Prep

The clearest difference is review sentiment: Instrument Test Prep at 88% against ATCPrep.com™ (ATSA Test Prep)'s 0%. Instrument Test Prep also leads on price (Free vs $39.99) and rating (4.9 vs 2.3). ATCPrep.com™ (ATSA Test Prep)'s advantage is in-app purchases (none vs 4) and iOS requirement (13.0 vs 17.1). On ads and device support there is nothing between them.

Instrument Test Prep is free to download; ATCPrep.com™ (ATSA Test Prep) costs $39.99 up front. Instrument Test Prep sells 4 one-off in-app purchases. ATCPrep.com™ (ATSA Test Prep) asks for nothing beyond the download.

Instrument Test Prep holds the better App Store score, 4.9 against 2.3. That said, the two scores are not equally well evidenced: Instrument Test Prep has 156 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 0% of ATCPrep.com™ (ATSA Test Prep)'s written reviews are positive against 88% of Instrument Test Prep's.

ATCPrep.com™ (ATSA Test Prep) ships an update every 5 months, Instrument Test Prep fortnightly. The most recent releases landed on November 1, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | ATCPrep.com™ (ATSA Test Prep) | Instrument Test Prep |
| --- | --- | --- |
| Price | $39.99 | **Free** |
| Rating | [2.3 (4 ratings)](https://appshunter.io/ios/app/atcprepcom-atsa-test-prep/id687196266/reviews) | **[4.9 (156 ratings)](https://appshunter.io/ios/app/instrument-test-prep/id1456043080/reviews)** |
| Number of ratings | 4 | **156** |
| Positive reviews | 0.0% of reviews | **87.5% of reviews** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Fortnightly** |
| Monetization | Paid | **Free with in-app purchases** |
| Size | 79 MB | 122 MB |
| Requires iOS | **13.0** | 17.1 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 12+ |
| Developer | [Aviation Media & IT GmbH](https://appshunter.io/developer/504134961) | [Aeroapps Technology](https://appshunter.io/developer/923860276) |

## What reviewers say

### ATCPrep.com™ (ATSA Test Prep)

[App page](https://appshunter.io/ios/app/atcprepcom-atsa-test-prep/id687196266)

Prepare for FAA air traffic controller pre-employment screening with this comprehensive suite. It offers multiple training modules for ATSA and AT-SAT cognitive tests, including collision scenarios, visual relationships, and radar simulations. Supplemental math tests and a training assistant are also included.

**Highlights:** ATSA & AT-SAT cognitive test preparation, Air Traffic Collision Scenarios training, Radar simulation for air traffic control, Visual Relationships and Differences tests, Supplemental Math and Analogy tests, Performance evaluation and adaptive difficulty

**Features:** macOS Compatibility

**In-app purchases:** none


### Instrument Test Prep

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

Prepare for your FAA Instrument Rating Knowledge Test with over 900 questions and detailed explanations. Customize study sessions, track your weakest areas, and take simulated exams that mirror the official test format. An optional upgrade unlocks a full ground school course with additional lessons and advanced features.

**Highlights:** Over 900 FAA questions and explanations, Customizable study sessions by topic and size, Focus on weakest topics and missed questions, Simulated FAA exams with correct question proportions, Detailed explanations and regulation references, Cross-device data syncing

**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 |


## Frequently asked questions

### Is ATCPrep.com™ (ATSA Test Prep) free?

ATCPrep.com™ (ATSA Test Prep) costs $39.99, with no in-app purchases.

### Is Instrument Test Prep free?

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

### Which has better reviews, ATCPrep.com™ (ATSA Test Prep) or Instrument Test Prep?

Instrument Test Prep is rated higher. ATCPrep.com™ (ATSA Test Prep) averages 2.3 out of 5 from 4 ratings, while Instrument Test Prep averages 4.9 from 156 ratings.

### Do ATCPrep.com™ (ATSA Test Prep) or Instrument Test Prep have ads?

Neither ATCPrep.com™ (ATSA Test Prep) nor Instrument Test Prep shows ads.

### Which is updated more often, ATCPrep.com™ (ATSA Test Prep) or Instrument Test Prep?

ATCPrep.com™ (ATSA Test Prep) ships an update every 5 months, and Instrument Test Prep fortnightly. Most recently, ATCPrep.com™ (ATSA Test Prep) was updated on November 1, 2026 and Instrument Test Prep on November 2, 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.*