Comparison

RegBrief vs FAR AIM Reader

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

Head to head
About

RegBrief

Access comprehensive aviation regulations and study guides on your device. Features fast search, AI-powered explanations, and study tools tailored to pilot certification. Offline access ensures you always have crucial information.

Highlights
  • Full Federal Aviation Regulations (FAR)
  • Aeronautical Information Manual (AIM)
  • Fast full-text search
  • AI-powered plain-English explanations
  • Airman Certification Standards (ACS) study guide
  • Offline access
  • Highlighting, notes, and bookmarks
Features
Read full description

RegBrief is an iPhone and iPad app that puts the full FAR/AIM offline on your phone, for pilots from student to ATP. Fast full-text search covers the whole library, and after a one-time download it works completely offline, with no account needed. What's included • Full 14 CFR (all aviation-relevant parts), 49 CFR Part 830, the AIM with color figures, and the Pilot/Controller Glossary • Selected Advisory Circulars covering aviation weather, pilot certification, stall and spin awareness, collision avoidance, and non-towered airport operations • Fast full-text search finds any regulation. • Offline once downloaded, no account, no problem • Tap any §-reference to jump directly to the cited section Your ACS study guide RegBrief ships the FAA Airman Certification Standards for Private, Remote Pilot, Instrument, Commercial, Flight Instructor, and ATP. • Read the ACS top-to-bottom: Areas of Operation, Tasks, Knowledge / Risk / Skill elements • Every element links to the live FAR / AIM / AC section the FAA cites. Tap a citation chip to read the source inline. • Study by certificate: pick your certificate, see only the ACS that applies to you • Sort tasks by Area Study tools • Highlight text, add notes, and bookmark sections (Plus) • Bookmarks, highlights, and notes sync across your devices via iCloud • Reading history keeps your place automatically • Filter content by certificate (Private, Sport, Remote/Part 107, Instrument, Commercial, CFI, ATP, Mechanic) • See exactly what changed when regulations are updated (Plus) On-device Apple Intelligence With Plus, on Apple Intelligence-capable hardware, RegBrief uses Apple Foundation Models on-device: • Plain-English RegBriefs: every section gets a plain-English RegBrief, plus tap any subsection for a focused brief on just that part of a long rule • Selection RegBriefs: highlight any passage and get a plain-English explanation in place On-device Apple Intelligence features run entirely on your device. The regulation text and the generated RegBrief never leave your phone. Pro Pro adds a cloud-powered Q&A service: ask any FAR/AIM question in plain English and get an answer with citations to the cited sections. Pro Q&A is the only feature that requires an internet connection, and it works on every iOS 18+ device. Apple Intelligence not required. Pricing The full regulation library is free. All text, all search, no cost. Upgrade for more: Free: Full regulation text, full-text search, study-by-certificate filtering, reading history. Always free. Plus: $2.99/month or $19.99/year. Bookmarks, highlights, notes, change tracking, export, custom collections, and on-device Apple Intelligence features. Pro: $5.99/month or $39.99/year. Everything in Plus, plus cloud Q&A for deeper regulatory questions. Pro Q&A sends your question and, when applicable, the section ID you are reading. No name, email, device identifier, or certificate selection is sent. Annual Plus and annual Pro include a 14-day free trial. Monthly Plus and monthly Pro start billing immediately. Cancel anytime. Learn more: https://regbrief.app Privacy: https://regbrief.app/privacy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

FAR AIM Reader

Access and search all Federal Aviation Regulations and the Aeronautical Information Manual instantly, even offline. Organize your study with highlights, bookmarks, and notes. Syncs across devices for seamless use.

Highlights
  • Instant offline search
  • Full-text search across 1,612 sections
  • Advanced diff viewer for changes
  • Syncs reading position, bookmarks, highlights
  • Three-color highlighting with notes
  • Multiple font and theme options
  • Direct cross-reference jumping
Features
Read full description

Instant offline search across 1,612 FAR/AIM sections. Syncs between iPhone and iPad. Made with love for pilots. WHY CHOOSE AIRLEX We want you to experience the best way to check, read, search, and study FAR AIM. Airlex was built from the ground up to address all pain points of FAR AIM apps. The goal is for you to have every regulation, instantly, offline, on every device you own, with frequent updates and an advanced diff viewer, so you can always know what changed and when. WHAT'S INSIDE • Instant full-text search across 1,612 FAR/AIM sections: Search powered by a tweaked algorithm, zero network required • Frequently updated with a beautiful diff viewer, for you to analyze in details the changes • Works 100% offline: at FBOs, in cockpits, aloft, anywhere signal dies • Reading position, bookmarks, and highlights sync automatically between iPhone and iPad via iCloud • Three-color highlights (Sky, Amber, Rose) with typed notes: organize regs by what matters to you • Six fonts including OpenDyslexic and Atkinson Hyperlegible; four themes (Light, Sepia, Dark, Night cockpit) • Theming via 4 gorgeous accent colors • Tap any § cross-reference (§ 91.3, § 61.56) to jump straight to that section • Quick-access chips: Part 91, Part 61, AIM Chapter 3, and more • Full Aeronautical Information Manual with color figures WHAT IT COVERS • All 14 CFR (Federal Aviation Regulations) aviation sections • Complete Aeronautical Information Manual HONEST PRICING Airlex requires a subscription or a one-time lifetime purchase to unlock the content. Choose: • Airlex Lifetime: $19.99 one-time. Forever. No recurring bills. • Airlex Annual: $4.99/year, with a 7-day free trial for new subscribers. Subscription terms if you choose the yearly subscription: Airlex Annual is $4.99/year, charged to your Apple ID at confirmation of purchase. Subscriptions auto-renew yearly at $4.99 unless canceled at least 24 hours before the end of the current period. Manage or cancel anytime in iPhone Settings → Apple ID → Subscriptions. Restore Purchases is available on the paywall. BUILT FOR PILOTS • Student pilots prepping for PPL, IFR, or CPL written exams • Active pilots running pre-flight regulatory checks • CFIs who need an answer fast during a briefing Privacy: Airlex runs on your device. Your reading position, bookmarks, and annotations sync through your own iCloud account. No tracking, no ads. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://bluemantiq.com/privacy

Screenshots

RegBrief4 screens
FAR AIM Reader4 screens

Verdict

The call

RegBrief and FAR AIM Reader are too close to call on the numbers: across 9 compared parameters — price, rating, ratings volume and update cadence among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

Both are free to download. RegBrief sells 4 in-app purchases, starting at $2.99 per month and FAR AIM Reader sells 2 in-app purchases, starting at $4.99 per year. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for RegBrief against 5.0 for FAR AIM Reader. Both are backed by a comparable volume of ratings — 1 and 2 respectively.

UpkeepUpdate frequency

RegBrief ships an update weekly, FAR AIM Reader every 9 days. The most recent releases landed on October 4, 2026 and October 8, 2026 respectively.

ScorecardNo meaningful differences
RegBrief versus FAR AIM Reader: the parameters behind the verdict, then further details
ParameterRegBriefFAR AIM Reader
PriceFreeFree
Rating5.0 (1 ratings)5.0 (2 ratings)
Positive reviews—100.0% of reviews
Number of ratings12 — better
Update frequencyWeekly — betterEvery 9 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.017.0 — better
Further details — not scored
Size4 MB58 MB
Age rating4+4+
DeveloperAIVIATION LLCBlue Mantiq LLC

Customer experience

RegBrief

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

FAR AIM Reader

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

4 purchases

RegBrief

Subscriptions4
  • RegBrief Plus Monthly$2.991 Month
  • RegBrief Pro Monthly$5.991 Month
  • RegBrief Plus Annual7 Days trial$19.991 Year
Show 1 more
  • RegBrief Pro Annual7 Days trial$39.991 Year
2 purchases

FAR AIM Reader

Subscriptions1
  • Airlex Annual7 Days trial$4.991 Year
One-time1
  • Airlex Lifetime$19.99

Questions

Is RegBrief free?
RegBrief is free to download, with in-app purchases available.
Is FAR AIM Reader free?
FAR AIM Reader is free to download, with in-app purchases available.
Which has better reviews, RegBrief or FAR AIM Reader?
RegBrief and FAR AIM Reader are both rated 5.0 out of 5 on the App Store, from 1 and 2 ratings respectively.
Do RegBrief or FAR AIM Reader have ads?
Neither RegBrief nor FAR AIM Reader shows ads.
Which is updated more often, RegBrief or FAR AIM Reader?
RegBrief ships an update weekly, and FAR AIM Reader every 9 days. Most recently, RegBrief was updated on October 4, 2026 and FAR AIM Reader on October 8, 2026.

Other comparisons