Comparison

ASTB Prep vs Fly IFR

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

ASTB Prep

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
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ASTB PREP is a comprehensive study tool for the ASTB-E and OAR military aviation exams, created by a former Naval Officer. Full Access is available as a one-time in-app purchase. Whether you are preparing for Navy, Marine Corps, or Coast Guard aviation selection, ASTB PREP gives you the tools to study efficiently and build confidence before test day. FREE FEATURES • Create a free account • Access introductory lessons covering exam overview, structure, and study strategies • Track your study progress • Sync your progress and access with your ASTB PREP account FULL ACCESS • 81 comprehensive lessons with review sections across all 7 ASTB subtests • 140+ flashcard decks for rapid knowledge reinforcement • 1,200+ sample test questions with detailed explanations • Unlimited adaptive practice tests that target your weak areas • Dichotic Listening Test (DLT) simulator • UAV tracking simulator • Terrain Identification simulator • Rear Cockpit simulator • Hardware-enhanced PBM training for a more realistic practice experience • On iPhone and iPad, train with intuitive on-screen controls or compatible Bluetooth game controllers, including supported Xbox and PlayStation controllers • Performance coaching tools • All content is available offline after download, making ASTB PREP ideal for deployment, travel, and other low-connectivity environments STUDY WITH YOUR ACCOUNT Full Access is tied to your ASTB PREP account. Sign in with the same account to keep your access and study progress synced and available wherever your account is supported. EXISTING CUSTOMERS If you previously purchased ASTB PREP, your access is preserved. Simply sign in or create an account to link your Full Access. ALL 7 ASTB SUBTESTS COVERED • Math Skills Test (MST) • Reading Comprehension Test (RCT) • Mechanical Comprehension Test (MCT) • Aviation and Nautical Information Test (ANIT) • Naval Aviation Trait Facet Inventory (NATFI) • Performance Based Measures (PBM): DLT, UAV, TI, RC • Biographical Inventory with Response Validation (BI-RV) Also covers all 3 OAR subtests: MST, RCT, and MCT. Account required. Free to create. Privacy policy: https://www.iubenda.com/privacy-policy/24362764

About

Fly IFR

Features
Currently charting
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T-6B Fly IFR – Radio Instrument Orientation Trainer, On Demand Turn your iPhone into a pocket-sized, always-available T-6B enroute navigation trainer. T-6B Pocket RIOT (Radio Instrument Orientation Trainer) lets you learn, practice, and master the core CNATRA Primary Instrument Navigation enroute procedures anytime, anywhere – no simulator bay, no aircraft, no crew schedule required. Train the Procedures You’ll Actually Fly Work through endless randomized scenarios built around the enroute techniques you’re expected to know cold: • DIRECT TO A VOR • STATION PASSAGE • OVER-THE-STATION INTERCEPT • RADIAL / RADIAL INTERCEPTS • RADIAL / ARC INTERCEPTS • ARCING • ARC / RADIAL INTERCEPTS • INTERSECTIONS • POINT-TO-POINT Each run re-rolls winds, headings, radials, and geometry, so you can drill procedures until the scan and logic become automatic instead of scripted. Built on Real-World NAVAIDs and Magnetic Data • Practice with a U.S. database of 968 ground-based NAVAIDs to tune and track. • Uses the NOAA World Magnetic Model to apply realistic magnetic variation, so your instruments match the offsets you’ll see in the jet. • Accurate wind modeling derives TAS and GS from your selected wind speed, direction, airspeed, and heading—perfect for building instinctive wind-correction skills. Fly the HSI Like You’re in the T-6B • Includes all core T-6B HSI presentations so students can build habits that transfer directly to the aircraft. • Set heading, airspeed, and altitude and slew the “airplane” around the sky to visualize your geometry. • Choose your turn style: hold-to-turn (continue turn while pressing) or tap-to-start / tap-to-stop for hands-off standard-rate work. • Select Standard Rate Turn (SRT) or 1/2 SRT to match your training profile. • Five play-speed levels let you slow things down to learn or speed things up to stay sharp. • One-tap clock start/stop and a fast Play/Pause toggle make it easy to brief, fly, pause, and debrief each scenario. Endless Practice, Anywhere Because it’s iPhone based, T-6B Pocket RIOT goes wherever you go: • Knock out a few DIRECT-TO or ARC / RADIAL reps between events. • Keep your instrument scan and mental picture sharp on the road. • Instructors can quickly build “what if” drills on the spot—no sim bay scheduling required. ForeFlight Mobile Integration – Train with the Same Tools You Fly T-6B Pocket RIOT can broadcast simulated position and attitude data over Wi-Fi so ForeFlight Mobile sees your iPhone as a connected device. This means you can: • Watch your simulated aircraft move across ForeFlight’s map and geo-referenced approach plates. • Practice procedures with the same EFB you use in the aircraft, building muscle memory and situational awareness before you strap in. • Debrief tracks, altitudes, and speeds to see exactly how well you flew each scenario inside your EFB. Getting Connected Is Simple 1. Make sure your Mac/PC and iPhone are on the same Wi-Fi network. 2. In the FLY IFR / RIOT app settings, enable broadcast/simulator output. 3. On your iPad running ForeFlight, go to More > Devices, select the simulator source, and enable it. 4. On your iPhone or iPad, allow Local Network access for the app in iOS Settings. Designed for T-6B Students, Instructors, and IFR Pilots Whether you’re: • A T-6B student trying to get ahead of the airplane on VOR/HSI work, • An IP looking for a flexible, low-friction way to assign extra reps, or • An instrument-rated pilot who wants a pocket trainer for raw-data radio navigation, T-6B Pocket RIOT gives you an endlessly replayable, highly configurable instrument navigation sandbox—built around real procedures, real NAVAIDs, realistic winds and mag variation, and the same EFB ecosystem you’ll use in the fleet. Master the scan. Own the geometry. Show up to every event already ahead of the needle with T-6B Pocket RIOT.

Screenshots

ASTB Prep4 screens
Fly IFR4 screens

Verdict

The call

The clearest difference is price: ASTB Prep at Free against Fly IFR's $7.99. ASTB Prep also leads on device support (3 vs 1). Fly IFR's advantage is in-app purchases (none vs 2) and chart position (#190 vs unranked). On ads and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

ASTB Prep is free to download; Fly IFR costs $7.99 up front. ASTB Prep sells 2 one-off in-app purchases. Fly IFR asks for nothing beyond the download.

Scorecard4 real differences · 7 level
ASTB Prep versus Fly IFR: the parameters behind the verdict, then further details
ParameterASTB PrepFly IFR
PriceFree — better$7.99
Rating4.9 (447 ratings) — better—
Positive reviews93.6% of reviews—
Number of ratings447 — better—
Update frequencyFortnightly—
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
Best chart rank—#190 — better
DevicesiPhone, iPad, Mac — betteriPhone
Requires iOS17.017.0
Further details — not scored
Size815 MB5 MB
Age rating9+4+
DeveloperAlex HastingsDavid Spicer

Bugs and requests

ASTB Prep

Reported bugs

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

Requested features

4 requests
  • 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

Fly IFR

Not enough reviews yet to summarise bugs or requests.

In-app purchases

2 purchases

ASTB Prep

One-time2
  • Joystick FunctionalityFree
  • Full Access$39.99
None

Fly IFR

No in-app purchases

Questions

Is ASTB Prep free?
ASTB Prep is free to download, with in-app purchases available.
Is Fly IFR free?
Fly IFR costs $7.99, with no in-app purchases.
Do ASTB Prep or Fly IFR have ads?
Neither ASTB Prep nor Fly IFR shows ads.

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