Comparison

Bubblegum 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

Bubblegum

This app uses AI to create personalized Korean reading materials with inline translations and audio. It features an AI tutor for explanations and practice, and a unique review system that resurfaces saved vocabulary within new content. Track your progress with encouraging statistics.

Highlights
  • AI-generated personalized reading content
  • Inline translations and grammar explanations
  • Synchronized audio narration
  • AI Korean tutor chatbot
  • Regenerative vocabulary review
  • Progress tracking and statistics
Features
Read full description

Bubblegum makes learning languages feel clear and personal. Read lessons about what you love, tap any word for help without losing your place, hear natural audio, and see your saved words again right when you need them. Built by language learners for learners. Why learners choose Bubblegum: • Personal lessons: pick from thousands of ideas or write your own, and Poppy, your AI tutor, writes a reading at your level with natural audio in seconds. • Help on tap: see word meanings, grammar notes, and cultural context right inside the text. • Listen as you read: natural narration highlights each line in sync to train your ear. • Ask Poppy anything: get deeper explanations, extra practice, or answers about the language you are learning. • Keep words fresh: Regenerative Review™ brings the words you save back inside future lessons, so you never grind through endless flashcards. • Real momentum: friendly stats celebrate your study time and recent wins. No streaks, no guilt. Every language is taught in its own right: • English (American, British, Australian), Spanish (Spain, Latin America, Río de la Plata), French (France, Canada), and Portuguese (Brazil, Portugal). • Korean, with a course that teaches you to read Hangul. • Japanese, with hiragana, katakana, and kanji courses, plus furigana whenever you want it. • Chinese in Simplified or Traditional characters with Pinyin, and Cantonese with Jyutping and its six tones. • Vietnamese (Northern, Central, Southern) and Arabic (Modern Standard, Egyptian, Moroccan), in the variety you choose. • Indonesian, Malay, Filipino (Tagalog), Cebuano, and Thai, for warm everyday conversations. • Russian and Ukrainian, each with a course that teaches you to read Cyrillic. • German, Italian, Swedish, Danish, Norwegian, Dutch, Finnish, Bulgarian, and Macedonian, with grammar explained inside real sentences. • Turkish and Azerbaijani, with vowel harmony and word endings explained as you read. • Polish, Czech, Slovak, Slovenian, Hungarian, Croatian, Romanian, Albanian, Serbian, Belarusian, Lithuanian, Latvian, and Estonian, with endings explained where you meet them. • Welsh, Irish, Galician, Basque, Catalan, Swahili, Haitian Creole, Nigerian Pidgin, Javanese, Hausa, Ilocano, Maltese, Māori, Somali, Yoruba, Icelandic, Luxembourgish, Afrikaans, Uzbek, and Twi, each with natural audio and its own culture. • Toki Pona, a tiny language made for fun and simple ideas. Bubblegum stays proudly learner-first, learner-funded, and ad-free. Need a hand? Email support@bubblegum.la.

About

Sejong Study

This app offers a comprehensive suite of tools for learning Korean, including a story-based course, classic fables, flashcards, and a dictionary. It covers grammar, vocabulary, and speech levels with interactive quizzes and tap-to-translate features.

Highlights
  • 24-chapter story-based course
  • Classic Korean fables with audio
  • Spaced-repetition flashcards
  • Korean-English dictionary
  • Grammar and vocabulary notes
  • Tap-to-translate functionality
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

Bubblegum4 screens
Sejong Study4 screens

Verdict

The call

The clearest difference is price: Bubblegum at Free against Sejong Study's $1.99. Bubblegum also leads on update cadence (daily vs every 5 months) and iOS requirement (16.0 vs 18.2). Sejong Study's advantage is in-app purchases (none vs 10) and review sentiment (100% vs 79%). On ads and device support 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

Bubblegum is free to download; Sejong Study costs $1.99 up front. Bubblegum sells 10 in-app purchases, starting at $5.99 per 7 days. Sejong Study asks for nothing beyond the download.

UpkeepUpdate frequency

Bubblegum ships an update daily, Sejong Study every 5 months. The most recent releases landed on October 20, 2026 and October 17, 2026 respectively.

Scorecard6 real differences · 4 level
Bubblegum versus Sejong Study: the parameters behind the verdict, then further details
ParameterBubblegumSejong Study
PriceFree — better$1.99
Rating4.9 (168 ratings) — better—
Positive reviews78.9% of reviews100.0% of reviews — better
Number of ratings168 — better—
Update frequencyDaily — betterEvery 5 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
DevicesiPhoneiPhone, iPad — better
Requires iOS16.0 — better18.2
Further details — not scored
Size185 MB380 MB
Age rating12+4+
DeveloperBubblegum LanguagesJeffrey Dick

Customer experience

Bubblegum

All ratings168 ratings
Positive97.6%
Neutral0.6%
Negative1.8%
Written reviews19 reviews
Positive78.9%
Neutral10.5%
Negative10.5%

Sejong Study

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

10 purchases

Bubblegum

Subscriptions9
  • Bubblegum Pro Weekly Subscription7 Days trial$5.997 Days
  • Bubblegum Pro Monthly Subscription7 Days trial$13.991 Month
  • Bubblegum Plus Monthly Subscription$14.991 Month
Show 6 more
  • Bubblegum Pro Monthly Subscription$17.991 Month
  • Bubblegum Pro Annual Subscription3 Days trial$69.991 Year
  • Bubblegum Pro Annual Subscription7 Days trial$69.991 Year
  • Bubblegum Pro Annual Subscription$79.991 Year
  • Bubblegum Pro Annual Subscription1 Year trial$99.991 Year
  • Bubblegum Pro 6-Month Subscription7 Days trial$119.996 Months
One-time1
  • Founding Member$899.99
None

Sejong Study

No in-app purchases

Questions

Is Bubblegum free?
Bubblegum is free to download, with in-app purchases available.
Is Sejong Study free?
Sejong Study costs $1.99, with no in-app purchases.
Do Bubblegum or Sejong Study have ads?
Neither Bubblegum nor Sejong Study shows ads.
Which is updated more often, Bubblegum or Sejong Study?
Bubblegum ships an update daily, and Sejong Study every 5 months. Most recently, Bubblegum was updated on October 20, 2026 and Sejong Study on October 17, 2026.

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