Comparison

Bubblegum vs Ludus

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), 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.

About

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.

Highlights
  • Pre-loaded dictionaries
  • Automatic daily review decks
  • Spaced Repetition Scheduler (FSRS)
  • Word definitions and grammar info
  • AI Sentence Generator
  • AI Scan Tool
Features
Read full description

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

Bubblegum4 screens
Ludus4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

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 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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Bubblegum versus Ludus: the parameters behind the verdict, then further details
ParameterBubblegumLudus
PriceFreeFree
Rating4.9 (162 ratings)5.0 (17 ratings) — better
Positive reviews81.3% of reviews86.7% of reviews — better
Number of ratings162 — better17
Update frequencyEvery 2 days — betterEvery 5 days
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhoneiPhone
Requires iOS16.0 — better16.4
Further details — not scored
Size175 MB166 MB
Age rating12+4+
DeveloperBubblegum LanguagesLudus-Language, Inc.

Customer experience

Bubblegum

All ratings162 ratings
Positive97.5%
Neutral0.6%
Negative1.9%
Written reviews16 reviews
Positive81.3%
Neutral6.3%
Negative12.5%

Ludus

All ratings17 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews15 reviews
Positive86.7%
Neutral0.0%
Negative13.3%

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
2 purchases

Ludus

Subscriptions2
  • Academic Weapon$7.991 Month
  • Annual Subscription7 Days trial$59.991 Year

Questions

Is Bubblegum free?
Bubblegum is free to download, with in-app purchases available.
Is Ludus free?
Ludus is free to download, with in-app purchases available.
Which has better reviews, Bubblegum or Ludus?
Ludus is rated higher. Bubblegum averages 4.9 out of 5 from 162 ratings, while Ludus averages 5.0 from 17 ratings.
Do Bubblegum or Ludus have ads?
Neither Bubblegum nor Ludus shows ads.
Which is updated more often, Bubblegum or Ludus?
Bubblegum ships an update every 2 days, and Ludus every 5 days. Most recently, Bubblegum was updated on October 1, 2026 and Ludus on September 29, 2026.

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