Bubblegum vs Ludus
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), and Cebuano, 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.
Ludus
This app helps you learn new languages faster by automatically creating study decks from pre-loaded dictionaries. It uses a smart spaced repetition system to schedule reviews right before you forget words, ensuring efficient learning and better long-term memory retention.
- Pre-loaded dictionaries
- Automatic daily review decks
- Spaced Repetition Scheduler (FSRS)
- Word definitions and grammar info
- AI Sentence Generator
- AI Scan Tool
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Stop wasting time making flashcards manually. Ludus comes with pre-loaded dictionaries, so you can search any word, save it instantly, and it automatically becomes part of your daily study deck. Ludus uses Free Spaced Repetition Scheduler (FSRS), a modern spaced repetition system that builds a unique forgetting curve for every word, so you review vocabulary right before you're likely to forget it. That means fewer wasted reps, faster progress, and stronger long-term memory. Whether you're learning French, Spanish, or building vocabulary for school, Ludus helps you study consistently and retain more with less effort. FREE FEATURES: - Pre-loaded dictionaries (no manual flashcard creation) - Instant word saving with automatic daily review deck - FSRS-based spaced repetition for smarter scheduling - Word definitions, grammar info, and example usage - Clean, fast studying built for real learning PAID FEATURES (Academic Weapon subscription): - All Languages Unlocked - Unlimited Saved Lists Coming soon: Games, skins. SUBSCRIPTION INFORMATION Ludus offers an auto-renewable subscription to unlock all premium features: ACADEMIC WEAPON PLAN: - Monthly: $6.99/month FREE PLAN: - Limited access to features - Upgrade anytime to unlock full access SUBSCRIPTION TERMS: - Payment charged to Apple ID at purchase confirmation - Subscription automatically renews unless canceled at least 24 hours before the end of the current period - Manage subscriptions in iPhone Settings > [Your Name] > Subscriptions - No refunds for unused portions of subscription LEGAL DOCUMENTS: Terms of Use (EULA): https://ludusapp.com/terms Privacy Policy: https://ludusapp.com/privacy-policy For support, contact: admin@ludusapp.com
Screenshots
Verdict
The clearest difference is ratings volume: Bubblegum at 162 against Ludus's 17. Bubblegum also leads on update cadence (every 2 days vs every 5 days). On price, rating, review sentiment 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
Both are free to download. Bubblegum sells 10 in-app purchases, starting at $5.99 per 7 days and Ludus sells 2 in-app purchases, starting at $7.99 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 Ludus. That said, the two scores are not equally well evidenced: Bubblegum has 162 ratings behind it against 17, so its average is the more settled of the two. Written reviews are what separate them: 81% of Bubblegum's written reviews are positive against 87% of Ludus's.
Bubblegum ships an update every 2 days, Ludus every 5 days. The most recent releases landed on October 1, 2026 and September 29, 2026 respectively.
| Parameter | Bubblegum | Ludus |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (162 ratings) | 5.0 (17 ratings) — better |
| Positive reviews | 81.3% of reviews | 86.7% of reviews — better |
| Number of ratings | 162 — better | 17 |
| Update frequency | Every 2 days — better | Every 5 days |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Freemium |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 16.4 |
| Further details — not scored | ||
| Size | 175 MB | 166 MB |
| Age rating | 12+ | 4+ |
| Developer | Bubblegum Languages | Ludus-Language, Inc. |
Customer experience
Bubblegum
Ludus
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
Ludus
- Academic Weapon$7.991 Month
- Annual Subscription7 Days trial$59.991 Year








