Comparison

GrammarPal vs NASM CES Corrective Prep

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

Head to head
About

GrammarPal

Features
Read full description

English grammar doesn't have to be intimidating. GrammarPal covers every grammar rule in Vietnamese, from A1 to C2, with one short lesson a day. No dictionary needed. No tutor required. Just 5 minutes. LEARN AT YOUR OWN PACE, CEFR ALIGNED โ€ข All 6 levels: A1 โ†’ A2 โ†’ B1 โ†’ B2 โ†’ C1 โ†’ C2 โ€ข Each level has a clear, structured learning path โ€ข Suitable for beginners through advanced learners LEVEL-END REVIEW TEST โ€ข 20 questions covering every grammar point in the completed level โ€ข Hints provided for each question, review the topic right on the spot โ€ข 600-question bank per level, fresh tests every time you retry โ€ข AI teacher highlights strengths, weaknesses, and study recommendations (PRO) EXPLAINED IN VIETNAMESE โ€ข Every grammar rule explained in Vietnamese โ€ข Real-world English examples, easy to understand and remember โ€ข Built specifically for Vietnamese learners, not a generic translation NATIVE PRONUNCIATION โ€ข Built-in Text-to-Speech playback in every lesson โ€ข Practice listening and pronunciation while you study grammar LEARN DAILY, STAY CONSISTENT โ€ข Each lesson takes just 5โ€“10 minutes โ€ข Smart reminders keep you on track โ€ข Visual progress tracking across every level PROGRESS WIDGETS โ€ข Home Screen & Lock Screen widgets, see your progress at a glance, no need to open the app โ€ข Auto-updated after every lesson BADGES & ACHIEVEMENTS โ€ข Earn a badge for every lesson completed โ€ข Track your A1โ†’C2 journey through your badge collection โ€ข Unlock new badges as you level up, every step forward counts PERSONALIZED AI COACH (PRO) โ€ข AI coach analyzes your weak points and builds a custom study plan โ€ข Practice questions generated dynamically based on your current level GRAMMAR LOOKUP LIBRARY โ€ข Search and browse irregular verbs, verb tenses, and word forms โ€ข Filter by CEFR level or part of speech โ€ข Built-in pronunciation, works fully offline, free for everyone GRAMMAR YOU'LL COVER A1 - Beginner: Simple Present, Verb "to be", Articles a/an/the, Plural Nouns, Imperative Sentences, Personal Pronouns, Possessive Adjectives, Demonstratives, There is/There are, Modal can, Question Words, Countable/Uncountable Nouns A2 - Elementary: Simple Past, Present Continuous, Simple Future, Going to, Comparatives/Superlatives, Prepositions, Should/must/have to, Used to, Possessive Pronouns, Tag Questions, Adverbs of Frequency B1 - Intermediate: Present Perfect, Present Perfect Continuous, Past Continuous, Past Perfect, First Conditional, Relative Clauses, Gerunds and Infinitives, Would for Past Habits, Indirect Questions, Time Clauses B2 - Upper-Intermediate: Past Perfect Continuous, Future Continuous, Future Perfect, Passive Voice, Second & Third Conditionals, Reported Speech, Modal Verbs, Wish/If only, Causative Structures, Participial Clauses, Emphatic Structures C1 - Advanced: Future Perfect Continuous, Mixed Conditionals, Inversion, Cleft Sentences, Perfect Modals, Advanced Connectors, Nominalization, Ellipsis & Substitution, Advanced Passive, Would rather/Had better C2 - Mastery: Subjunctive Mood, Semantic Nuance, Stylistic Structures, Discourse Markers, Contextual Language Variation, Pragmatic Meaning, Rhetorical Devices Whether you're preparing for IELTS, TOEIC, or just want to speak English with confidence every day. GrammarPal is with you every step of the way. Download free. Upgrade to PRO to unlock the AI coach and all advanced content. Subscription Details All premium features are available free during a trial period after your first download. Subscriptions automatically renew unless canceled at least 24 hours before the end of the current period. Payment is charged to your Apple ID account upon purchase confirmation. Manage or cancel in App Store account settings. - Privacy Policy: https://grammarpal.app/chinh-sach-quyen-rieng-tu - Terms of Use: https://grammarpal.app/dieu-khoan-su-dung

About

NASM CES Corrective Prep

Features
Read full description

Corrective Exercise Specialist Exam Prep 2026 helps you pass with 1076+ realistic practice questions, each with a clear explanation. FEATURES - 1076+ practice questions with detailed answer explanations - Study modes: quick 10, mock exam, timed, missed questions, and study by topic - Progress tracking with subject accuracy and a learning curve - Works offline so you can study anywhere - Clean, distraction-free design built for focused study Whether you are just starting or doing a final review before test day, Corrective Exercise Specialist Exam Prep gives you the questions and explanations you need to build confidence and pass. SUBSCRIPTION Unlock all questions and features with an auto-renewable subscription: Weekly ($4.99), Monthly ($12.99), or Yearly ($39.99). A one-time Lifetime unlock ($39.99) is also available. Payment is charged to your Apple Account at confirmation of purchase. A subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account is charged for renewal within 24 hours before the end of the current period. Manage or cancel anytime in your Apple Account settings. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://flysky-privacy.pages.dev This is an independent study aid and is not affiliated with or endorsed by any official testing organization.

Screenshots

GrammarPal4 screens
NASM CES Corrective Prep4 screens

Verdict

The call

The clearest difference is iOS requirement: NASM CES Corrective Prep at 13.0 against GrammarPal's 18.0. On price, ads, in-app purchases and device support there is nothing between them.

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

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. GrammarPal sells 6 in-app purchases, starting at $0.99 per 7 days and NASM CES Corrective Prep sells 3 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference ยท 5 level
GrammarPal versus NASM CES Corrective Prep: the parameters behind the verdict, then further details
ParameterGrammarPalNASM CES Corrective Prep
PriceFreeFree
Update frequencyEvery 3 daysโ€”
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPadiPhone, iPad, iPod โ€” better
Requires iOS18.013.0 โ€” better
Further details โ€” not scored
Size117 MB26 MB
Age rating4+4+
DeveloperKy Thanh PhamFLY SKY PTY LTD

In-app purchases

6 purchases

GrammarPal

Subscriptions6
  • Weekly PRO$0.997 Days
  • Monthly PRO$4.991 Month
  • 02 Month PRO$8.992 Months
Show 3 more
  • 03 Month PRO$12.993 Months
  • 06 Month PRO$19.996 Months
  • Yearly PRO3 Days trial$19.991 Year
3 purchases

NASM CES Corrective Prep

Subscriptions2
  • Corrective Exercise Specialist$6.997 Days
  • Corrective Exercise Specialist$16.991 Month
One-time1
  • Corrective Exercise Specialist$69.99

Questions

Is GrammarPal free?
GrammarPal is free to download, with in-app purchases available.
Is NASM CES Corrective Prep free?
NASM CES Corrective Prep is free to download, with in-app purchases available.
Do GrammarPal or NASM CES Corrective Prep have ads?
Neither GrammarPal nor NASM CES Corrective Prep shows ads.

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