Comparison

Bootstrap Korean Grammar vs Dusajeon Korean Dictionary

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

Head to head
About

Bootstrap Korean Grammar

Master Korean grammar with a step-by-step approach. This app offers 185 grammar topics and over 3200 audio examples to build your communication skills. Interactive exercises and a personal study list enhance learning.

Highlights
  • 185 grammar topics
  • 3200+ audio examples
  • Step-by-step learning
  • Interactive exercises
  • Personal study list
  • Companion book integration
Features
Read full description

Finally understand Korean grammar - one small step at a time. • 185 topics, from your first sentence to honorifics and reported speech • 3,200+ examples, each with native-speaker audio • Exercises and spaced repetition for every topic • A "Why?" explanation when you make a mistake Packed with 185 Korean grammar topics and over 3,200 annotated native-speaker audio examples, *Bootstrap Korean Grammar* is a proven grammar-based approach that gets you communicating in Korean precisely and with confidence. FREE TO TRY: The first 10 topics free. Unlock all 185 with one purchase. A lifetime purchase - NO subscription. * 'Bootstrap Korean Grammar' provides the solid grounding in grammar basics that is the key to mastering Korean as a second language. * Grammatical rules and concepts are clearly explained in order. Each topic builds on the last - step-by-step. * Hundreds of new words are introduced with clear contextual meanings alongside the grammar to help learners quickly build their Korean speaking and comprehension prowess. STEP-BY-STEP TOPICS: Starting from the beginning, the idea is progress in small self-contained steps (called 'topics'). Each topic builds on the last, by incrementally adding new grammatical patterns, new vocabulary and lots and lots of useful examples - from the topic and subject markers 은/는 and 이/가, through tenses and particles, to causatives, honorifics and the formal 습니다 style. 3,200 EXAMPLE PHRASES: Each topic includes a thorough explanation of the grammar and then lots of examples that illustrate the grammar. Each example includes an English translation, as well as notes highlighting how each example illustrates that topic's grammar, as well as the meanings of new Korean words. INTERACTIVE EXERCISES: Once you have understood a grammar topic, you can immerse yourself in interactive drills designed for effective learning. Practice Korean grammar with engaging exercises for rapid improvement. Make a mistake with the topic's grammar and a short "Why?" explanation shows you what the right answer is - and why. STUDY LIST: The app now includes an integrated personal study list feature that streamlines your learning process -- improve your focus and achieve better results in your studies. THE COMPANION BOOK: The companion book is available called "Bootstrap Korean Grammar". The book includes all 185 grammar topics and over 3,200 example phrases from this app. -- Just search for "Bootstrap Korean Grammar" on Amazon. -- The book and mobile app are easy to coordinate using QR codes. Just scan the QR code at the beginning of any chapter in the book with the app and it will take you straight to the topic where you will find all the examples with the high-quality audio matching the chapter in the book. -- So if you prefer to have the grammar set out in book form but would also like to be able to listen to the example sentences, then the book/app combination is perfect for you.

About

Dusajeon Korean Dictionary

An offline Korean learner's dictionary offering extensive features for vocabulary building and Hanja exploration. It provides a customizable interface and supports multiple search and definition languages.

Highlights
  • 100% offline functionality
  • Customizable user interface
  • Multi-language search (Korean, English, Japanese, Chinese)
  • Over 60,000 Korean dictionary entries
  • Hanja Explorer for browsing Hanja
  • Deep link integration for external app searches
Features
Read full description

This is Dusajeon! Dusajeon is an offline, lightweight, and highly-customizable Korean learner's dictionary. Features: - Simple, intuitive, and highly-customizable UI - 100% offline - Search by Korean (Hangul, Hanja, or mixed), English, Japanese, or Chinese - Most definitions available in English, Korean, Japanese, and Chinese - More than 60,000 Korean language dictionary entries - Hanja Explorer feature lets you quickly browse through Hanja with options for sorting and filtering - Facilitates the learning of Hanja to quickly build your Korean vocabulary no matter your level - Deep link integration: search for any word from within another app via URL (great for flash card decks) Your user experience is valuable so please do not hesitate to provide feedback or report bugs!

Screenshots

Bootstrap Korean Grammar4 screens
Dusajeon Korean Dictionary4 screens

Verdict

The call

The clearest difference is review sentiment: Dusajeon Korean Dictionary at 96% against Bootstrap Korean Grammar's 33%. Dusajeon Korean Dictionary also leads on rating (4.8 vs 3.5) and in-app purchases (none vs 1). Bootstrap Korean Grammar's advantage is price (Free vs $5.99) and update cadence (every 9 days vs every 2 months). On ads, device support and iOS requirement 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

Bootstrap Korean Grammar is free to download; Dusajeon Korean Dictionary costs $5.99 up front. Bootstrap Korean Grammar sells 1 one-off in-app purchase. Dusajeon Korean Dictionary asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Dusajeon Korean Dictionary holds the better App Store score, 4.8 against 3.5. That said, the two scores are not equally well evidenced: Dusajeon Korean Dictionary has 34 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 33% of Bootstrap Korean Grammar's written reviews are positive against 96% of Dusajeon Korean Dictionary's.

UpkeepUpdate frequency

Bootstrap Korean Grammar ships an update every 9 days, Dusajeon Korean Dictionary every 2 months. Both last shipped on November 3, 2026.

Scorecard7 real differences · 3 level
Bootstrap Korean Grammar versus Dusajeon Korean Dictionary: the parameters behind the verdict, then further details
ParameterBootstrap Korean GrammarDusajeon Korean Dictionary
PriceFree — better$5.99
Rating3.5 (4 ratings)4.8 (34 ratings) — better
Positive reviews33.3% of reviews95.7% of reviews — better
Number of ratings434 — better
Update frequencyEvery 9 days — betterEvery 2 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.615.0 — better
Further details — not scored
Size38 MB426 MB
Age rating4+4+
DeveloperDeclan SoftwareLouis Digioia

Customer experience

Bootstrap Korean Grammar

All ratings4 ratings
Positive50.0%
Neutral25.0%
Negative25.0%
Written reviews3 reviews
Positive33.3%
Neutral33.3%
Negative33.3%

Dusajeon Korean Dictionary

All ratings33 ratings
Positive97.0%
Neutral3.0%
Negative0.0%
Written reviews23 reviews
Positive95.7%
Neutral4.3%
Negative0.0%

In-app purchases

1 purchases

Bootstrap Korean Grammar

One-time1
  • Unlock All Korean Topics$34.99
None

Dusajeon Korean Dictionary

No in-app purchases

Questions

Is Bootstrap Korean Grammar free?
Bootstrap Korean Grammar is free to download, with in-app purchases available.
Is Dusajeon Korean Dictionary free?
Dusajeon Korean Dictionary costs $5.99, with no in-app purchases.
Which has better reviews, Bootstrap Korean Grammar or Dusajeon Korean Dictionary?
Dusajeon Korean Dictionary is rated higher. Bootstrap Korean Grammar averages 3.5 out of 5 from 4 ratings, while Dusajeon Korean Dictionary averages 4.8 from 34 ratings.
Do Bootstrap Korean Grammar or Dusajeon Korean Dictionary have ads?
Neither Bootstrap Korean Grammar nor Dusajeon Korean Dictionary shows ads.
Which is updated more often, Bootstrap Korean Grammar or Dusajeon Korean Dictionary?
Bootstrap Korean Grammar ships an update every 9 days, and Dusajeon Korean Dictionary every 2 months. Most recently, Bootstrap Korean Grammar was updated on November 3, 2026 and Dusajeon Korean Dictionary on November 3, 2026.

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