# Brain Chief vs Bubblegum

The clearest difference is in-app purchases: Brain Chief at none against Bubblegum's 10. Brain Chief also leads on device support (3 vs 1) and iOS requirement (13.0 vs 16.0). Bubblegum's advantage is update cadence (daily vs fortnightly). On price and ads there is nothing between them.

Both are free to download. Bubblegum sells 10 in-app purchases, starting at $5.99 per 7 days. Brain Chief asks for nothing beyond the download.

Brain Chief ships an update fortnightly, Bubblegum daily. The most recent releases landed on October 6, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | Brain Chief | Bubblegum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.9 (167 ratings)](https://appshunter.io/ios/app/bubblegum-learn-languages/id6578440980/reviews)** |
| Number of ratings | — | **167** |
| Positive reviews | — | 78.9% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Fortnightly | **Daily** |
| Monetization | — | Free with in-app purchases |
| Size | 112 MB | 183 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 17+ | 12+ |
| Developer | [Abdou Ziada](https://appshunter.io/developer/1652177466) | [Bubblegum Languages](https://appshunter.io/developer/1737615892) |

## What reviewers say

### Brain Chief

[App page](https://appshunter.io/ios/app/brain-chief/id6463511023)

**Features:** macOS Compatibility

**In-app purchases:** none


### Bubblegum

[App page](https://appshunter.io/ios/app/bubblegum-learn-languages/id6578440980)

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:** macOS Compatibility, Apple Wallet, Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Bubblegum Pro Weekly Subscription | $5.99 | per 7 days |
| Bubblegum Pro Monthly Subscription | $13.99 | per month |
| Bubblegum Plus Monthly Subscription | $14.99 | per month |
| Bubblegum Pro Monthly Subscription | $17.99 | per month |
| Bubblegum Pro Annual Subscription | $69.99 | per year |
| Bubblegum Pro Annual Subscription | $69.99 | per year |
| Bubblegum Pro Annual Subscription | $79.99 | per year |
| Bubblegum Pro Annual Subscription | $99.99 | per year |
| Bubblegum Pro 6-Month Subscription | $119.99 | per 6 months |
| Founding Member | $899.99 | one-time |


## Frequently asked questions

### Is Brain Chief free?

Brain Chief is free to download, with no in-app purchases.

### Is Bubblegum free?

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

### Do Brain Chief or Bubblegum have ads?

Neither Brain Chief nor Bubblegum shows ads.

### Which is updated more often, Brain Chief or Bubblegum?

Brain Chief ships an update fortnightly, and Bubblegum daily. Most recently, Brain Chief was updated on October 6, 2026 and Bubblegum on October 14, 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.*