Comparison

Brain Chief vs Bubblegum

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

Head to head
About

Brain Chief

Features
Read full description

Brain Chief: طريقك إلى المعرفة فتح باب التعلم مع تطبيق Brain Chief! اكتشف عالمًا من فرص التعليم بين يديك. مزايا رئيسية: تشكيلة واسعة من الدورات المجانيه : اختر من مجموعة متنوعة من الدورات المجانيه التي تساعدك على فهم اكثر في مجموعه من المواد العلميه محاضرون متخصصون: تعلم من خلال مجموعه من الاكاديمين المحترفين الذين يشاركون شغفهم بنقل المعرفه في مجموعات متخصصه ودورات علميه

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, 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.

Screenshots

Brain Chief4 screens
Bubblegum4 screens

Verdict

The call

The clearest difference is in-app purchases: Brain Chief at none against Bubblegum's 10. Brain Chief also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). Bubblegum's advantage is update cadence (daily vs fortnightly). On price and ads 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. Brain Chief asks for nothing beyond the download.

UpkeepUpdate frequency

Brain Chief ships an update fortnightly, Bubblegum daily. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

Scorecard4 real differences · 6 level
Brain Chief versus Bubblegum: the parameters behind the verdict, then further details
ParameterBrain ChiefBubblegum
PriceFreeFree
Rating—4.9 (167 ratings) — better
Positive reviews—78.9% of reviews
Number of ratings—167 — better
Update frequencyFortnightlyDaily — better
AdsNoNo
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS13.0 — better16.0
Further details — not scored
Size112 MB183 MB
Age rating17+12+
DeveloperAbdou ZiadaBubblegum Languages

In-app purchases

None

Brain Chief

No 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

Questions

Is Brain Chief free?
Brain Chief is free to download, with no in-app purchases.
Is Bubblegum free?
Bubblegum is free to download, with in-app purchases available.
Do Brain Chief or Bubblegum have ads?
Neither Brain Chief nor Bubblegum shows ads.
Which is updated more often, Brain Chief or Bubblegum?
Brain Chief ships an update fortnightly, and Bubblegum daily. Most recently, Brain Chief was updated on October 6, 2026 and Bubblegum on October 14, 2026.

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