Comparison

Gravity vs Miaru

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

Head to head
About

Gravity

Learn Japanese by capturing real-world text from your surroundings. This app creates personalized flashcards and study plans based on the vocabulary you encounter daily, making learning practical and context-driven.

Highlights
  • Personalized learning plans
  • Instant vocabulary extraction from photos
  • Smart review system
  • Context-based flashcards
  • Immersion-focused learning
  • Daily learning sessions
Features
Read full description

LEARN LANGUAGES THE FAST WAY - THROUGH VIDEOS! (Now with Mandarin Chinese support!) ◆ Learn Japanese and Mandarin Chinese through the content you already love. ◆ Gravity is an immersion-first language app that turns real videos and music into personalized learning. Doomscroll short native clips, sing along in Karaoke Mode, or pick something from a hand-curated library of native videos, each one transcribed word by word and levelled for learners. ◆ Whether you're into anime, J-pop, C-dramas, music, or YouTube creators, Gravity helps you build real language skills through context instead of generic textbook lessons. WHY CHOOSE GRAVITY? → Doomscroll to fluency: Moments turns scrolling into learning with a feed of short clips from native content. → Curated video library: native videos across anime, music, entertainment, creators, and more, levelled from complete beginner to advanced. → Word-synced transcripts: follow along word by word as the audio plays, with an English translation for every line that you can show or hide. → Karaoke Mode: follow the lyrics of songs you love, understand every line, and pick up vocabulary through music. → Tap to learn: tap any word for its reading, meaning, and an AI explanation, then save it in one tap. → Context-based flashcards: every saved word keeps the moment it came from, so you can replay the original clip while you review. → Smart spaced repetition: reviews are scheduled so each word comes back right before you'd forget it. → Practice right after watching: review the words you just saved as soon as you finish a video. → Daily word goals and reminders: stay consistent without overwhelming study sessions. BUILT FOR EACH LANGUAGE Japanese → Furigana, romaji, or no reading aids. Your choice. → Pitch accent graphs and dictionary meanings on every card. → Anime, J-pop, podcasts, streams, and more, levelled from Pre-JLPT to N1. Mandarin Chinese → Pinyin with tone marks, or turn it off. → Simplified characters, with traditional forms shown alongside. → C-dramas, music, and more, levelled from Pre-HSK to HSK 6. WHAT YOU'LL LEARN ◆ Real vocabulary and phrases, the way native speakers actually use them. ◆ Listening and reading skills through authentic videos, songs, and clips. ◆ Words from the shows, music, and creators you already watch. ◆ Language you'll actually hear, not just textbook examples. WHO IT'S FOR → Anime, J-pop, C-drama, and music fans who want to learn from what they already love. → Learners who already spend hours watching videos and scrolling online. → Travelers, international students, and people living or working abroad. → Busy learners who want immersion to fit naturally into their day. → Anyone tired of repetitive textbook lessons and overwhelming flashcard decks. HOW IT WORKS 1. Choose Japanese or Mandarin Chinese and your level. 2. Watch a video, scroll Moments, or sing along with a song. 3. Tap unfamiliar words to see what they mean and save them. 4. Gravity turns your saved words into flashcards, each linked to its original moment. 5. Review a few minutes a day and watch your known words grow. LEARN THROUGH WHAT YOU LOVE Doomscroll in the language you're learning. Watch videos. Sing your favorite songs. Gravity turns the content you already want to watch into something you can actually learn from. GRAVITY IS IN EARLY ACCESS. Any bugs, issues, or feedback can be directed to support@learngravity.com. Privacy: https://learngravity.com/privacy Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

About

Miaru

This app makes language learning a consistent habit with short, practical lessons. It focuses on reading, listening, and building sentences from the start, using native audio and smart review techniques. Interactive conversations and gamified elements like streaks and daily goals keep users engaged.

Highlights
  • Bite-size lessons
  • Native-quality audio
  • Smart review system (SRS)
  • Interactive conversations
  • Streaks and daily goals
  • Learn Japanese, Spanish, English
Features
Read full description

Miaru turns language learning into a daily habit you actually keep. Every lesson is short, focused, and hands-on — you read, listen, and build real sentences from day one. No filler. No endless flashcard grind. WHY IT WORKS • Bite-size lessons that fit a coffee break • Native-quality audio on every word, sentence, and conversation • Smart review (SRS): what you miss comes back at exactly the right moment • Interactive conversations that teach how the language is really used • Streaks, daily goals, and XP that keep you coming back LEARN JAPANESE — PROPERLY • Master hiragana and katakana from zero • Every Jōyō kanji with animated stroke order • Everyday Japanese: real conversations for real situations • 300+ lessons from your first character to confident reading MORE LANGUAGES • Spanish — practical, everyday Spanish from zero • English — built for speakers of 30+ languages • Learn in your language: Miaru speaks 35 locales FREE TO START New lessons free every day. Unlock everything with Miaru Premium — unlimited lessons across all courses. $19.99/month or $179.99/year. Subscriptions auto-renew until canceled; manage anytime in your App Store account settings. Privacy: https://miaru.co/privacy • Terms: https://miaru.co/terms Meet Luffy, your study buddy — and make today day one of your streak.

Screenshots

Gravity4 screens
Miaru4 screens

Verdict

The call

The clearest difference is rating: Miaru at 4.7 against Gravity's 4.1. Miaru also leads on update cadence (every 3 days vs every 9 days). Gravity's advantage is ratings volume (35 vs 7) and device support (3 vs 1). On price, ads, in-app purchases and monetization model 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. Gravity sells 6 in-app purchases, starting at $4.99 per month and Miaru sells 2 in-app purchases, starting at $19.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Miaru holds the better App Store score, 4.7 against 4.1. That said, the two scores are not equally well evidenced: Gravity has 35 ratings behind it against 7, so its average is the more settled of the two.

UpkeepUpdate frequency

Gravity ships an update every 9 days, Miaru every 3 days. Both last shipped on October 25, 2026.

Scorecard4 real differences · 6 level
Gravity versus Miaru: the parameters behind the verdict, then further details
ParameterGravityMiaru
PriceFreeFree
Rating4.1 (35 ratings)4.7 (7 ratings) — better
Positive reviews67.9% of reviews—
Number of ratings35 — better7
Update frequencyEvery 9 daysEvery 3 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFreemium
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.1 — better16.4
Further details — not scored
Size109 MB77 MB
Age rating4+4+
DeveloperHeimdall Space Inc.Miaru LLC

Customer experience

Gravity

All ratings35 ratings
Positive77.1%
Neutral0.0%
Negative22.9%
Written reviews28 reviews
Positive67.9%
Neutral3.6%
Negative28.6%

Miaru

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

6 purchases

Gravity

Subscriptions6
  • special offer$4.991 Month
  • Fluency$6.997 Days
  • Immersive Monthly7 Days trial$8.991 Month
Show 3 more
  • Immersive Monthly7 Days trial$11.991 Month
  • Immersion7 Days trial$14.991 Month
  • Polyglot7 Days trial$69.991 Year
2 purchases

Miaru

Subscriptions2
  • Premium Monthly$19.991 Month
  • Premium Yearly$179.991 Year

Questions

Is Gravity free?
Gravity is free to download, with in-app purchases available.
Is Miaru free?
Miaru is free to download, with in-app purchases available.
Which has better reviews, Gravity or Miaru?
Miaru is rated higher. Gravity averages 4.1 out of 5 from 35 ratings, while Miaru averages 4.7 from 7 ratings.
Do Gravity or Miaru have ads?
Neither Gravity nor Miaru shows ads.
Which is updated more often, Gravity or Miaru?
Gravity ships an update every 9 days, and Miaru every 3 days. Most recently, Gravity was updated on October 25, 2026 and Miaru on October 25, 2026.

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