Comparison

Penguin vs GrammarPal

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

Head to head
About

Penguin

Master new languages with interactive games and personalized lessons. Improve pronunciation with audio voiceovers and track your progress with real-time scores. Stay motivated with daily reminders and weekly reports.

Highlights
  • Personalized lessons and vocabulary
  • Learning through interactive games
  • Audio voiceovers for pronunciation
  • Real-time scores and progress tracking
  • Daily study reminders and weekly reports
Features
Read full description

Penguin is an innovative language and vocabulary learning app that makes mastering new languages fun and effective through interactive games. Key Features: • Personalized Lessons & Words: Custom lessons and vocabulary sets tailored to your personal goals and learning pace. • Learning Through Games: Memorize words effortlessly by playing engaging games designed for active learning. • Audio Voiceovers & Pronunciation: Improve your speaking and listening skills with clear and accurate audio pronunciations for all words. • Scores & Progress Tracking: Aim for high scores in games and track your accomplishments in real-time. • Email Notifications: Stay motivated with daily study reminders and weekly progress reports sent straight to your inbox. Explore the world of words and learn new languages easily with Penguin! Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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 • All 6 levels: A1 → A2 → B1 → B2 → C1 → C2 • Each level has a clear, structured learning path • Suitable for beginners through advanced learners LEVEL-END REVIEW TEST • 20 questions covering every grammar point in the completed level • Hints provided for each question, review the topic right on the spot • 600-question bank per level, fresh tests every time you retry • AI teacher highlights strengths, weaknesses, and study recommendations (PRO) EXPLAINED IN VIETNAMESE • Every grammar rule explained in Vietnamese • Real-world English examples, easy to understand and remember • Built specifically for Vietnamese learners, not a generic translation NATIVE PRONUNCIATION • Built-in Text-to-Speech playback in every lesson • Practice listening and pronunciation while you study grammar LEARN DAILY, STAY CONSISTENT • Each lesson takes just 5–10 minutes • Smart reminders keep you on track • Visual progress tracking across every level PROGRESS WIDGETS • Home Screen & Lock Screen widgets, see your progress at a glance, no need to open the app • Auto-updated after every lesson BADGES & ACHIEVEMENTS • Earn a badge for every lesson completed • Track your A1→C2 journey through your badge collection • Unlock new badges as you level up, every step forward counts PERSONALIZED AI COACH (PRO) • AI coach analyzes your weak points and builds a custom study plan • Practice questions generated dynamically based on your current level GRAMMAR LOOKUP LIBRARY • Search and browse irregular verbs, verb tenses, and word forms • Filter by CEFR level or part of speech • 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

Screenshots

Penguin4 screens
GrammarPal4 screens

Verdict

The call

The clearest difference is iOS requirement: Penguin at 15.0 against GrammarPal's 18.0. On price, update cadence, ads and in-app purchases 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

Both are free to download. Penguin sells 1 in-app purchase, starting at $5.99 per month and GrammarPal sells 6 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 3 days. The most recent releases landed on October 31, 2026 and October 27, 2026 respectively.

Scorecard1 real difference · 8 level
Penguin versus GrammarPal: the parameters behind the verdict, then further details
ParameterPenguinGrammarPal
PriceFreeFree
Rating1.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 3 daysEvery 3 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchases—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better18.0
Further details — not scored
Size33 MB117 MB
Age rating4+4+
DeveloperAYKUT ARSLANTASKy Thanh Pham

In-app purchases

1 purchases

Penguin

Subscriptions1
  • Penguin Premium Monthly3 Days trial$5.991 Month
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

Questions

Is Penguin free?
Penguin is free to download, with in-app purchases available.
Is GrammarPal free?
GrammarPal is free to download, with in-app purchases available.
Do Penguin or GrammarPal have ads?
Neither Penguin nor GrammarPal shows ads.
Which is updated more often, Penguin or GrammarPal?
Penguin ships an update every 3 days, and GrammarPal every 3 days. Most recently, Penguin was updated on October 31, 2026 and GrammarPal on October 27, 2026.

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