Comparison

Sonder's EPTA vs ATC Aptitude Prep

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

Head to head
About

Sonder's EPTA

Features
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Sonder's EPTA is a specialized aviation English training app designed for pilots preparing for the Korean EPTA (English Proficiency Test for Aviation). Practice both Radio Communication and Plain English tasks through realistic operational scenarios based on actual flight operations. Features: • Radio Communication training • Plain English speaking practice • Answer recording and playback • Model answers and answer review • EPTA-focused scenarios • Self-paced study mode Created by an experienced EPTA instructor and former evaluator to help pilots develop practical aviation English communication skills. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

ATC Aptitude Prep

Features
Read full description

Passing isn't the same as getting hired. The FAA's published pass mark for its air traffic controller aptitude test is 70%. But it sorts everyone who passes into score bands — and since 2018 it has selected candidates only from the top two: Well Qualified (85–89%) and Best Qualified (90%+). Thousands of people pass every year and are never referred. Most prep aims at the pass. ATC Aptitude Prep aims at the band. WHAT YOU GET • 2,100 original practice questions across the nine skills every ATC selection battery tests • Six interactive timed drills, generated fresh every run — nothing to memorise, only skill to build • A full-length practice battery: 100 questions in 100 minutes, scored into the real bands • A worked explanation for every single answer — the method, not just the letter • Spaced repetition that resurfaces what you got wrong, right before you'd forget it • A readiness score and per-skill mastery, so you always know what to work on tonight • Flashcards and a glossary: ICAO phonetics, headings, Zulu time, flight levels, separation • Works fully offline. No account. No sign-in. No ads. No tracking. THE NINE SKILLS Spatial reasoning & 3D orientation Ā· Numerical, time & distance Ā· Pattern recognition & sequences Ā· Working memory Ā· Multitasking & divided attention Ā· Logical reasoning & analogies Ā· Situational judgment & prioritisation Ā· Scanning & visual search Ā· ATC knowledge basics The FAA's assessment, EUROCONTROL FEAST, NATS, NAV CANADA and Airservices Australia were developed independently — and all converge on these same constructs. None requires prior aviation knowledge. They measure aptitude, and aptitude is trainable. THE SIX DRILLS Heading & Turn Ā· Radar Scan Ā· Clearance Memory Ā· Dual-Task Ā· Sequence Sprint Ā· Time to Conflict Every round is generated fresh, so you can run them forever. Speed is scored on every real battery, not just accuracy — the questions teach the method, the drills build the speed. HONESTY ABOUT WHAT THIS IS No ATC selection battery publishes its test items — they are proprietary and only ever seen in a supervised test centre. Nobody can sell you "the real questions." Every question, drill and explanation here is an original work, written from public descriptions of the skills these tests measure. PURCHASE REQUIRED ATC Aptitude Prep is free to download, and a purchase is required to use it — there is no free tier. All three plans unlock everything: • Monthly — $9.99 per month, auto-renewing • Annual — $49.99 per year (about $4.17/month) with a 3-DAY FREE TRIAL, auto-renewing • Lifetime — $99.99 one-time purchase, never renews Payment is charged to your Apple Account at confirmation of purchase. A subscription renews automatically unless cancelled at least 24 hours before the end of the current period. Manage or cancel in your App Store account settings after purchase. Any unused portion of a free trial is forfeited when you buy a subscription. Prices are in US dollars and may vary by storefront. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://joykhansayan1.github.io/atc-aptitude-prep/privacy.html DISCLAIMER ATC Aptitude Prep is an independent study aid. It is not affiliated with, authorized by, endorsed by, sponsored by, or associated with the Federal Aviation Administration (FAA), the U.S. Department of Transportation, Pearson VUE, EUROCONTROL, NATS, NAV CANADA, Airservices Australia, or any other testing authority. ATSA, FEAST and all other marks are the property of their respective owners and are used only to describe the kind of aptitude testing this app helps you practise. No real test questions are reproduced. The ATC reference material is simplified for study and is not for operational use.

Screenshots

Sonder's EPTA4 screens
ATC Aptitude Prep4 screens

Verdict

The call

The clearest difference is update cadence: Sonder's EPTA at weekly against ATC Aptitude Prep's every 3 months. Sonder's EPTA also leads on iOS requirement (15.0.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Sonder's EPTA sells 1 in-app purchase, starting at $19.99 per month and ATC Aptitude Prep sells 3 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Sonder's EPTA ships an update weekly, ATC Aptitude Prep every 3 months. The most recent releases landed on October 17, 2026 and October 25, 2026 respectively.

Scorecard2 real differences Ā· 4 level
Sonder's EPTA versus ATC Aptitude Prep: the parameters behind the verdict, then further details
ParameterSonder's EPTAATC Aptitude Prep
PriceFreeFree
Update frequencyWeekly — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0.0 — better17.0
Further details — not scored
Size41 MB6 MB
Age rating4+4+
Developersenam NamkungMD Shahariar Nazim Joy

In-app purchases

1 purchases

Sonder's EPTA

Subscriptions1
  • EPTA Premium$19.991 Month
3 purchases

ATC Aptitude Prep

Subscriptions2
  • Monthly$9.991 Month
  • Annual3 Days trial$49.991 Year
One-time1
  • Lifetime Access$99.99

Questions

Is Sonder's EPTA free?
Sonder's EPTA is free to download, with in-app purchases available.
Is ATC Aptitude Prep free?
ATC Aptitude Prep is free to download, with in-app purchases available.
Do Sonder's EPTA or ATC Aptitude Prep have ads?
Neither Sonder's EPTA nor ATC Aptitude Prep shows ads.
Which is updated more often, Sonder's EPTA or ATC Aptitude Prep?
Sonder's EPTA ships an update weekly, and ATC Aptitude Prep every 3 months. Most recently, Sonder's EPTA was updated on October 17, 2026 and ATC Aptitude Prep on October 25, 2026.

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