# Studio 789 vs CharGem

The clearest difference is in-app purchases: Studio 789 at none against CharGem's 2. CharGem's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. CharGem sells 2 in-app purchases, starting at $4.99 per 7 days. Studio 789 asks for nothing beyond the download.

Studio 789 ships an update every 2 months, CharGem every 2 weeks. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.

## The numbers

| Metric | Studio 789 | CharGem |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 12 MB | 39 MB |
| Requires iOS | 15.6 | **15.1** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dreamware Limited](https://appshunter.io/developer/892413586) | [Next Star AI, LLC](https://appshunter.io/developer/1826803923) |

## What reviewers say

### Studio 789

[App page](https://appshunter.io/ios/app/studio-789/id6451241270)

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

**In-app purchases:** none


### CharGem

[App page](https://appshunter.io/ios/app/chargem-learn-chinese/id6792016467)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $4.99 | per 7 days |
| Yearly | $24.99 | per year |


## Frequently asked questions

### Is Studio 789 free?

Studio 789 is free to download, with no in-app purchases.

### Is CharGem free?

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

### Do Studio 789 or CharGem have ads?

Neither Studio 789 nor CharGem shows ads.

### Which is updated more often, Studio 789 or CharGem?

Studio 789 ships an update every 2 months, and CharGem every 2 weeks. Most recently, Studio 789 was updated on November 7, 2026 and CharGem 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.*