# ATP Part 121 Test Prep vs 737 Classic FMS Tutorial

The clearest difference is price: ATP Part 121 Test Prep at $4.99 against 737 Classic FMS Tutorial's $29.99. ATP Part 121 Test Prep also leads on device support (3 vs 1) and iOS requirement (11.0 vs 16.1). 737 Classic FMS Tutorial's advantage is update cadence (monthly vs every 5 months). On review sentiment, ads, in-app purchases and monetization model there is nothing between them.

ATP Part 121 Test Prep costs $4.99 and 737 Classic FMS Tutorial $29.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ATP Part 121 Test Prep ships an update every 5 months, 737 Classic FMS Tutorial monthly. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | ATP Part 121 Test Prep | 737 Classic FMS Tutorial |
| --- | --- | --- |
| Price | **$4.99** | $29.99 |
| Rating | — | **[4.7 (20 ratings)](https://appshunter.io/ios/app/737-classic-fms-tutorial/id1578140909/reviews)** |
| Number of ratings | — | **20** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | Paid | Paid |
| Size | 11 MB | 2 MB |
| Requires iOS | **11.0** | 16.1 |
| Devices | **iPhone, iPad, iPod** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Bravo Zulu Apps LLC](https://appshunter.io/developer/1000879252) | [Terence Way](https://appshunter.io/developer/1576081195) |

## What reviewers say

### ATP Part 121 Test Prep

[App page](https://appshunter.io/ios/app/atp-part-121-test-prep/id1043317485)

Prepare for your FAA Part 121 Written Exam with this comprehensive test prep application. It features an extensive and regularly updated question bank, multiple study modes, and progress tracking to help you ace your test.

**Highlights:** Updated test bank, Progress tracking, Randomized questions, Quiz, Test, and Study modes, Offline access, Optional sound effects and haptic feedback

**In-app purchases:** none


### 737 Classic FMS Tutorial

[App page](https://appshunter.io/ios/app/737-classic-fms-tutorial/id1578140909)

Master the pre-flight procedures for a Boeing 737-300 with expert instruction. Explore advanced features like holds and alternates within a full-featured emulator.

**Highlights:** Expert instruction from a Boeing 737 pilot, Covers entire pre-flight sequence, Full-featured emulator included, Learn holds and alternates, Anchorage to Nome flight scenario

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

**In-app purchases:** none


## Frequently asked questions

### Is ATP Part 121 Test Prep free?

ATP Part 121 Test Prep costs $4.99, with no in-app purchases.

### Is 737 Classic FMS Tutorial free?

737 Classic FMS Tutorial costs $29.99, with no in-app purchases.

### Do ATP Part 121 Test Prep or 737 Classic FMS Tutorial have ads?

Neither ATP Part 121 Test Prep nor 737 Classic FMS Tutorial shows ads.

### Which is updated more often, ATP Part 121 Test Prep or 737 Classic FMS Tutorial?

ATP Part 121 Test Prep ships an update every 5 months, and 737 Classic FMS Tutorial monthly. Most recently, ATP Part 121 Test Prep was updated on October 21, 2026 and 737 Classic FMS Tutorial on October 24, 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.*