# ASTB Prep vs DLAB

The clearest difference is review sentiment: ASTB Prep at 94% against DLAB's 0%. DLAB's advantage is in-app purchases (none vs 2) and iOS requirement (15.1 vs 17.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. ASTB Prep sells 2 one-off in-app purchases. DLAB asks for nothing beyond the download.

ASTB Prep ships an update every 2 weeks, DLAB fortnightly. The most recent releases landed on October 11, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | ASTB Prep | DLAB |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (436 ratings)](https://appshunter.io/ios/app/astb-prep/id1549216388/reviews)** | — |
| Number of ratings | **436** | — |
| Positive reviews | **93.6% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 812 MB | 21 MB |
| Requires iOS | 17.0 | **15.1** |
| Devices | iPhone, iPad, Mac | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Alex Hastings](https://appshunter.io/developer/1549216390) | [Onanen Ventures LLC](https://appshunter.io/developer/1803525458) |

## What reviewers say

### ASTB Prep

[App page](https://appshunter.io/ios/app/astb-prep/id1549216388)

Prepare for naval aviation exams with comprehensive study materials, practice tests, and simulators. Covers all subtests for Navy, Marine Corps, and Coast Guard aviation selection. Features adaptive testing and offline access.

**Highlights:** 73 comprehensive lessons, 140+ flashcard decks, 600+ sample test questions, Unlimited adaptive practice tests, UAV tracking simulator, Terrain identification simulator, Stick and throttle simulators

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Joystick Functionality | Free | one-time |
| Full Access | $39.99 | one-time |

**What reviewers like**

- 🚀 Great tool for ASTB prep
- 👍 Comprehensive study materials
- 🚀 Helpful simulators for PBM
- 🚀 Improved test scores
- 👍 Detailed lessons and practice tests

**What reviewers complain about**

- 🐛 Some math/physics questions have incorrect answers
- 🐛 UAV simulator not fully accurate to real test
- 🐛 Stick and throttle simulator needs improvement

**Reported bugs**

- Mechanical comprehension test has 30 questions, not 20
- Terrain identification section has occasional screen color issues

**Requested features**

- Option to disable timer for terrain identification
- Ability to configure duration of correct answer display
- Add audio for UAV portion to simulate real test experience
- Include emergency scenario training for UAV


### DLAB

[App page](https://appshunter.io/ios/app/dlab/id6743597407)

Prepare for the Defense Language Aptitude Battery (DLAB) with this comprehensive study tool. It offers interactive lessons, grammar reviews, and realistic practice tests, including audio-based questions and Esperanto content, to improve your language learning and boost your score.

**Highlights:** Interactive grammar lessons, Audio-based practice questions, DLAB-specific content, Esperanto questions, Stress & Tones practice, Language Rules review

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ASTB Prep free?

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

### Is DLAB free?

DLAB is free to download, with no in-app purchases.

### Do ASTB Prep or DLAB have ads?

Neither ASTB Prep nor DLAB shows ads.

### Which is updated more often, ASTB Prep or DLAB?

ASTB Prep ships an update every 2 weeks, and DLAB fortnightly. Most recently, ASTB Prep was updated on October 11, 2026 and DLAB on September 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.*