Sonder's EPTA vs ATC Aptitude Prep
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Sonder's EPTA
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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/
ATC Aptitude Prep
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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 ā and since 2018 it has selected candidates only from the top two: Well Qualified (85ā89%) 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 ā 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 ā 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 ā 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 ā the questions teach the method, the drills build the speed. HONESTY ABOUT WHAT THIS IS No ATC selection battery publishes its test items ā 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 ā there is no free tier. All three plans unlock everything: ⢠Monthly ā $9.99 per month, auto-renewing ⢠Annual ā $49.99 per year (about $4.17/month) with a 3-DAY FREE TRIAL, auto-renewing ⢠Lifetime ā $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.
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Verdict
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
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.
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.
| Parameter | Sonder's EPTA | ATC Aptitude Prep |
|---|---|---|
| Price | Free | Free |
| Update frequency | Weekly ā better | Every 3 months |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad, iPod ā better | iPhone, iPad |
| Requires iOS | 15.0.0 ā better | 17.0 |
| Further details ā not scored | ||
| Size | 41 MB | 6 MB |
| Age rating | 4+ | 4+ |
| Developer | senam Namkung | MD Shahariar Nazim Joy |
In-app purchases
Sonder's EPTA
- EPTA Premium$19.991 Month
ATC Aptitude Prep
- Monthly$9.991 Month
- Annual3 Days trial$49.991 Year
- Lifetime Access$99.99
Questions
Is Sonder's EPTA free?
Is ATC Aptitude Prep free?
Do Sonder's EPTA or ATC Aptitude Prep have ads?
Which is updated more often, Sonder's EPTA or ATC Aptitude Prep?
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