# Nihondex vs Gravity

The clearest difference is rating: Nihondex at 4.9 against Gravity's 4.1. Nihondex also leads on review sentiment (100% vs 68%). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Nihondex sells 3 in-app purchases, starting at $7.99 per month and Gravity sells 6 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Nihondex holds the better App Store score, 4.9 against 4.1. Both are backed by a comparable volume of ratings — 27 and 37 respectively. Written reviews point the same way: 100% of Nihondex's written reviews are positive against 68% of Gravity's.

Nihondex ships an update weekly, Gravity every 9 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | Nihondex | Gravity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (27 ratings)](https://appshunter.io/ios/app/nihondex-learn-japanese/id6749200791/reviews)** | [4.1 (37 ratings)](https://appshunter.io/ios/app/gravity-language-immersion/id6769900394/reviews) |
| Number of ratings | 27 | **37** |
| Positive reviews | **100.0% of reviews** | 67.9% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Every 9 days |
| Monetization | Freemium | Free with in-app purchases |
| Size | 1 MB | 109 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Thomas Mauran](https://appshunter.io/developer/1829254847) | [Heimdall Space Inc.](https://appshunter.io/developer/1896698357) |

## What reviewers say

### Nihondex

[App page](https://appshunter.io/ios/app/nihondex-learn-japanese/id6749200791)

Master Japanese vocabulary, grammar, and kanji with a structured learning path. Utilizes spaced repetition for efficient memorization and includes interactive games and reading practice. Offers detailed progress tracking and social features to enhance your learning journey.

**Highlights:** Spaced repetition system (SRS), Kana games, Conjugation practice, Reading comprehension, Island Builder game, Progress tracking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $7.99 | per month |
| Yearly | $71.99 | per year |
| Lifetime | $129.00 | one-time |


### Gravity

[App page](https://appshunter.io/ios/app/gravity-language-immersion/id6769900394)

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:** macOS Compatibility, Vision Pro support

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| special offer | $4.99 | per month |
| Fluency | $6.99 | per 7 days |
| Immersive Monthly | $8.99 | per month |
| Immersive Monthly | $11.99 | per month |
| Immersion | $14.99 | per month |
| Polyglot | $69.99 | per year |


## Frequently asked questions

### Is Nihondex free?

Nihondex is free to download, with in-app purchases available.

### Is Gravity free?

Gravity is free to download, with in-app purchases available.

### Which has better reviews, Nihondex or Gravity?

Nihondex is rated higher. Nihondex averages 4.9 out of 5 from 27 ratings, while Gravity averages 4.1 from 37 ratings.

### Do Nihondex or Gravity have ads?

Neither Nihondex nor Gravity shows ads.

### Which is updated more often, Nihondex or Gravity?

Nihondex ships an update weekly, and Gravity every 9 days. Most recently, Nihondex was updated on October 28, 2026 and Gravity on October 28, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*