Comparison

Bubblegum vs K

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

K

Learn and practice Korean vocabulary through engaging quizzes. Track your learning progress and advance your language skills with this educational tool. Designed for all levels of Korean learners.

Highlights
  • Korean vocabulary quizzes
  • Progress tracking
  • Skill leveling
  • Practice Korean words
  • Educational tool
Features
Read full description

Master Korean vocabulary with fun quizzes! K-Word Master helps you learn and practice Korean words, track your progress, and level up your language skills.

Screenshots

Bubblegum4 screens
K4 screens

Verdict

The call

The clearest difference is in-app purchases: K at none against Bubblegum's 10. K also leads on device support (3 vs 1). Bubblegum's advantage is ads (none vs shown) and update cadence (daily vs every 8 days). On price, rating 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

Both are free to download. Bubblegum sells 10 in-app purchases, starting at $5.99 per 7 days. K asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.9 for Bubblegum against 5.0 for K. That said, the two scores are not equally well evidenced: Bubblegum has 168 ratings behind it against 2, so its average is the more settled of the two.

UpkeepUpdate frequency

Bubblegum ships an update daily, K every 8 days. The most recent releases landed on October 20, 2026 and October 2, 2026 respectively.

Scorecard6 real differences · 4 level
Bubblegum versus K: the parameters behind the verdict, then further details
ParameterBubblegumK
PriceFreeFree
Rating4.9 (168 ratings)5.0 (2 ratings) — better
Positive reviews78.9% of reviews—
Number of ratings168 — better2
Update frequencyDaily — betterEvery 8 days
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhoneiPhone, iPad, iPod — better
Requires iOS16.015.0 — better
Further details — not scored
Size185 MB36 MB
Age rating12+4+
DeveloperBubblegum LanguagesHyungpil Kim

Customer experience

Bubblegum

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

K

All ratings2 ratings
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

K

No in-app purchases

Questions

Is Bubblegum free?
Bubblegum is free to download, with in-app purchases available.
Is K free?
K is free to download, with no in-app purchases.
Which has better reviews, Bubblegum or K?
K is rated higher. Bubblegum averages 4.9 out of 5 from 168 ratings, while K averages 5.0 from 2 ratings.
Do Bubblegum or K have ads?
K shows ads; Bubblegum does not.
Which is updated more often, Bubblegum or K?
Bubblegum ships an update daily, and K every 8 days. Most recently, Bubblegum was updated on October 20, 2026 and K on October 2, 2026.

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