Bubblegum vs FlashFluency
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- AI-generated personalized reading content
- Inline translations and grammar explanations
- Synchronized audio narration
- AI Korean tutor chatbot
- Regenerative vocabulary review
- Progress tracking and statistics
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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.
FlashFluency
Master Korean from basic Hangul to fluency with AI-powered pronunciation feedback and sentence building. Learn one new concept at a time with spaced repetition for effective memorization. Instant explanations for vocabulary and grammar are available.
- Syllable-level AI pronunciation feedback
- AI sentence coach for writing practice
- +1 system for learning one concept at a time
- Spaced repetition for memorization
- Instant vocabulary and grammar explanations
- Frictionless learning experience
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Flash Fluency is an all-in-one Korean app, from Hangul to fluency. So is every other app. Here's what's different. CONTENT-TO-CURRICULUM Song lyrics, a news article, your class notes, a drama script. Bring any Korean you actually care about and Flash Fluency pulls out every vocab word and grammar point, then teaches them to you in new sentences. SYLLABLE-LEVEL PRONUNCIATION FEEDBACK AI feedback on every syllable you speak, covering every Korean pronunciation rule. Your recording beside a native voice, block by block, so you know exactly what you got wrong and how to fix it. TRANSLATION COACHING Write real Korean from your first lesson. Every sentence comes back with corrections, naturalness tips, and style notes, down to the particle. +1 AND SRS Each sentence introduces exactly one new concept, so you're never lost. Spaced repetition brings it back right before you'd forget it. SKILLS THAT STACK Read it, hear it, recall it, translate it, speak it. Each stage feeds the next. Complete beginner? Start with the Hangul course, then Korean Fundamentals. No prior Korean needed. Coming soon: conversational exercises and a 10,000-word TOPIK learning order. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://www.flashfluency.net/privacy_policy
Screenshots
Verdict
The clearest difference is update cadence: Bubblegum at daily against FlashFluency's every 3 weeks. Bubblegum also leads on ratings volume (167 vs 2). FlashFluency's advantage is review sentiment (100% vs 79%) and device support (3 vs 1). On price, rating, ads and in-app purchases 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
Both are free to download. Bubblegum sells 10 in-app purchases, starting at $5.99 per 7 days and FlashFluency sells 2 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.9 for Bubblegum against 5.0 for FlashFluency. That said, the two scores are not equally well evidenced: Bubblegum has 167 ratings behind it against 2, so its average is the more settled of the two. Written reviews are what separate them: 79% of Bubblegum's written reviews are positive against 100% of FlashFluency's.
Bubblegum ships an update daily, FlashFluency every 3 weeks. The most recent releases landed on October 14, 2026 and October 6, 2026 respectively.
| Parameter | Bubblegum | FlashFluency |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (167 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 78.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 167 — better | 2 |
| Update frequency | Daily — better | Every 3 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 183 MB | 94 MB |
| Age rating | 12+ | 12+ |
| Developer | Bubblegum Languages | Flash Fluency |
Customer experience
Bubblegum
FlashFluency
In-app purchases
Bubblegum
- 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
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- 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
- Founding Member$899.99
FlashFluency
- Flash Fluency Core7 Days trial$5.991 Month
- Flash Fluency Premium7 Days trial$12.991 Month









