# Think Math vs 글벼림

The clearest difference is in-app purchases: Think Math at none against 글벼림's 1. Think Math also leads on iOS requirement (13.0 vs 15.0). 글벼림's advantage is update cadence (weekly vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. 글벼림 sells 1 one-off in-app purchase. Think Math asks for nothing beyond the download.

Think Math ships an update every 3 weeks, 글벼림 weekly. Both last shipped on October 8, 2026.

## The numbers

| Metric | Think Math | 글벼림 |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 46 MB | 8 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Hasegi Inc.](https://appshunter.io/developer/1755968233) | [woosik choi](https://appshunter.io/developer/1845521022) |

## What reviewers say

### Think Math

[App page](https://appshunter.io/ios/app/think-math-math-concept-map/id6763571781)

Explore math concepts from elementary to high school on a comprehensive map. Easily find specific topics with a three-step navigation system and reinforce learning with linked YouTube videos and textbook-quality typesetting.  Ideal for students, parents, and teachers seeking a visual understanding of mathematical connections.

**Highlights:** 802 math concepts map, Three-step navigation, Textbook-quality typesetting, Linked YouTube concept videos, Grade-level explanations, Concept cards with basic/advanced views, Listen and learn audio feature

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

**In-app purchases:** none


### 글벼림

[App page](https://appshunter.io/ios/app/id6790785003)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 광고 제거 | $1.99 | one-time |


## Frequently asked questions

### Is Think Math free?

Think Math is free to download, with no in-app purchases.

### Is 글벼림 free?

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

### Do Think Math or 글벼림 have ads?

Both Think Math and 글벼림 show ads.

### Which is updated more often, Think Math or 글벼림?

Think Math ships an update every 3 weeks, and 글벼림 weekly. Most recently, Think Math was updated on October 8, 2026 and 글벼림 on October 8, 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.*