# Global Maths Challenge vs Guitar 3D Studio

The clearest difference is in-app purchases: Global Maths Challenge at none against Guitar 3D Studio's 14. Guitar 3D Studio's advantage is update cadence (monthly vs every 14 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Guitar 3D Studio sells 13 in-app purchases, starting at $14.99 per month. Global Maths Challenge asks for nothing beyond the download.

Global Maths Challenge ships an update every 14 months, Guitar 3D Studio monthly. Both last shipped on October 25, 2026.

## The numbers

| Metric | Global Maths Challenge | Guitar 3D Studio |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.8 (65 ratings)](https://appshunter.io/ios/app/guitar-3d-studio/id1611157050/reviews)** |
| Number of ratings | — | **65** |
| Positive reviews | — | 93.5% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 14 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 92 MB | 183 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ville Helin](https://appshunter.io/developer/1488520398) | [CMT Bilisim Muzik Ltd Sti](https://appshunter.io/developer/544258399) |

## What reviewers say

### Global Maths Challenge

[App page](https://appshunter.io/ios/app/global-maths-challenge/id1494591662)

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

**In-app purchases:** none


### Guitar 3D Studio

[App page](https://appshunter.io/ios/app/guitar-3d-studio/id1611157050)

Compose original music and learn guitar with a virtual instructor. This app offers a unique approach to music creation and learning, allowing users to create songs and then learn to play them with realistic 3D hand and finger animations.

**Highlights:** Virtual hands and finger animations, Intuitive composing editor, 3D view options with tempo control, Chord chain creation tools, Bass and drum pattern presets, Chord learning games, Realistic sound engine

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

**In-app purchases (13)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Subscription | $14.99 | per month |
| Yearly Subscription | $59.99 | per year |
| Studio Pro | $99.99 | per year |
| Distortion Basic | $2.99 | one-time |
| Export To WAV & MP3 | $2.99 | one-time |
| Acoustic Guitar Basic | $3.99 | one-time |
| Strumming Patterns Pack | $3.99 | one-time |
| Fingerstyle Patterns Pack | $3.99 | one-time |
| Strumming & Fingerstyle Bundle | $6.99 | one-time |
| E.Guitar - Distortion Bundle | $8.99 | one-time |
| Acoustic Guitar Bundle | $11.99 | one-time |
| Lifetime Studio | $16.99 | one-time |
| Lifetime Studio | $149.99 | one-time |


## Frequently asked questions

### Is Global Maths Challenge free?

Global Maths Challenge is free to download, with no in-app purchases.

### Is Guitar 3D Studio free?

Guitar 3D Studio is free to download, with in-app purchases available.

### Do Global Maths Challenge or Guitar 3D Studio have ads?

Both Global Maths Challenge and Guitar 3D Studio show ads.

### Which is updated more often, Global Maths Challenge or Guitar 3D Studio?

Global Maths Challenge ships an update every 14 months, and Guitar 3D Studio monthly. Most recently, Global Maths Challenge was updated on October 25, 2026 and Guitar 3D Studio on October 25, 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.*