# Info Academix vs Gravity

The clearest difference is in-app purchases: Info Academix at none against Gravity's 6. Gravity's advantage is update cadence (every 9 days vs every 3 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Gravity sells 6 in-app purchases, starting at $4.99 per month. Info Academix asks for nothing beyond the download.

Info Academix ships an update every 3 months, Gravity every 9 days. The most recent releases landed on October 8, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Info Academix | Gravity |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.1 (39 ratings)](https://appshunter.io/ios/app/gravity-language-immersion/id6769900394/reviews)** |
| Number of ratings | — | **39** |
| Positive reviews | — | 67.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 9 days** |
| Monetization | — | Free with in-app purchases |
| Size | 40 MB | 109 MB |
| Requires iOS | 15.1 | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BEEAVER TECH](https://appshunter.io/developer/1629565495) | [Heimdall Space Inc.](https://appshunter.io/developer/1896698357) |

## What reviewers say

### Info Academix

[App page](https://appshunter.io/ios/app/info-academix/id6768062013)

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

**In-app purchases:** none


### 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 Info Academix free?

Info Academix is free to download, with no in-app purchases.

### Is Gravity free?

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

### Do Info Academix or Gravity have ads?

Neither Info Academix nor Gravity shows ads.

### Which is updated more often, Info Academix or Gravity?

Info Academix ships an update every 3 months, and Gravity every 9 days. Most recently, Info Academix was updated on October 8, 2026 and Gravity on October 31, 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.*