Comparison

Korean Dictionary + vs Sejong Study

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

Head to head
About

Korean Dictionary +

This app provides a comprehensive bilingual dictionary for English and Korean, offering offline translation and pronunciation for over 350,000 words and phrases. It includes features like image text scanning, a phrasebook, vocabulary games, and a word of the day to aid language learning.

Highlights
  • Bilingual English-Korean dictionary
  • Offline translation and pronunciation
  • Image text scanning
  • Vocabulary games and flashcards
  • Phrasebook with common phrases
  • Word of the day
Features
Read full description

• Bilingual English to Korean and Korean to English dictionary • Korean to English word and phrase translator and translation • Over 350K words and phrase can be used in offline • Offline pronunciation and translate any sentences • Scan text in image by pointing camera to search in dictionary • Designed for student, teacher, tourist and language learners • Having thesaurus, synonyms and antonyms • Translate individual words, phrases, or whole sentences • Tap a word for cross searching • Bookmark and Recent history for instant recall • Word of the day to learn IELTS, TOEFL and SAT words • Multiple games help to improve English and Korean vocabulary • Offline Pronunciation helps to learn words properly • Flash card and Word of the Day helps to improve vocabulary • Phrase book, Phrase of the day and Phrase Card helps to speak common phrases • Quote of the Day improves wisdom and motivation

About

Sejong Study

Features
Read full description

Sejong Study brings four Korean tools into one app, with nothing locked behind in-app purchases. • Course — a 24-chapter story that follows Han Jiwoo through her first year at a Seoul design office and her visits home to Jeonju. Every chapter has a dialogue with sentence-by-sentence English, grammar notes, vocabulary and a quiz, and polite and casual speech are used naturally for each relationship. • Stories — five classic fables told in Korean (Red Riding Hood, The Tortoise and the Hare, The Three Little Pigs, Peter Rabbit, Jack and the Beanstalk) with tap-to-translate and audio. • Flashcards — spaced-repetition decks of everyday Korean words and grammar patterns. • Dictionary — search in Hangul or English, with romanisation and audio. Language Basics guides explain Hangul, particles, speech levels and Korean numbers as you go.

Screenshots

Korean Dictionary +4 screens
Sejong Study4 screens

Verdict

The call

The clearest difference is price: Korean Dictionary + at Free against Sejong Study's $1.99. Korean Dictionary + also leads on update cadence (every 2 months vs every 5 months). Sejong Study's advantage is in-app purchases (none vs 6) and ads (none vs shown). On 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

Korean Dictionary + is free to download; Sejong Study costs $1.99 up front. Korean Dictionary + sells 6 one-off in-app purchases. Sejong Study asks for nothing beyond the download.

UpkeepUpdate frequency

Korean Dictionary + ships an update every 2 months, Sejong Study every 5 months. The most recent releases landed on September 18, 2026 and September 17, 2026 respectively.

Scorecard4 real differences · 6 level
Korean Dictionary + versus Sejong Study: the parameters behind the verdict, then further details
ParameterKorean Dictionary +Sejong Study
PriceFree — better$1.99
Rating4.5 (216 ratings) — better—
Positive reviews55.2% of reviews—
Number of ratings216 — better—
Update frequencyEvery 2 months — betterEvery 5 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchases—
DevicesiPhone, iPadiPhone, iPad
Requires iOS17.6 — better18.2
Further details — not scored
Size36 MB380 MB
Age rating4+4+
DeveloperiThinkdiffJeffrey Dick

Bugs and requests

Korean Dictionary +

Reported bugs

8 issues
  • Pronunciation guide doesn't work
  • No sound from the app after paying for pronunciation
  • Scan mode doesn't work for Korean
  • App freezes and crashes after downloading translator addition
  • Pro upgrade is currently unavailable
Show 3 more
  • Intrusive autoplaying fullscreen ads make app unusable
  • Ads interrupt workflow for paying customers
  • Free version cut down too much

Requested features

19 requests
  • Allow listening to pronunciation without paying
  • Improve pronunciation guide functionality
  • Make pronunciation accessible for free
  • Include more definitions
  • Reduce ads
Show 14 more
  • Fix Pro upgrade availability
  • Improve scan mode for Korean
  • Translate phrases or sentences
  • Offer a Korean version similar to Pleco
  • Fix app freezing/crashing after translator addition
  • Remove intrusive ads
  • Make word of the day more useful
  • Include noun forms prominently
  • Provide better explanations for verb forms
  • Improve romanization for travelers
  • Expand vocabulary range
  • List base/root words
  • Add dark mode option
  • Make it quicker and easier to use

Sejong Study

Not enough reviews yet to summarise bugs or requests.

In-app purchases

6 purchases

Korean Dictionary +

One-time6
  • Remove Advertise$0.99
  • Pronunciation$0.99
  • Online Translator$0.99
Show 3 more
  • Flash Card$0.99
  • Phrase Book$0.99
  • Pro Upgrade$2.99
None

Sejong Study

No in-app purchases

Questions

Is Korean Dictionary + free?
Korean Dictionary + is free to download, with in-app purchases available.
Is Sejong Study free?
Sejong Study costs $1.99, with no in-app purchases.
Do Korean Dictionary + or Sejong Study have ads?
Korean Dictionary + shows ads; Sejong Study does not.
Which is updated more often, Korean Dictionary + or Sejong Study?
Korean Dictionary + ships an update every 2 months, and Sejong Study every 5 months. Most recently, Korean Dictionary + was updated on September 18, 2026 and Sejong Study on September 17, 2026.

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