# Discover German vs String Theory Game

The clearest difference is in-app purchases: String Theory Game at none against Discover German's 1. String Theory Game also leads on update cadence (every 2 days vs every 23 months) and iOS requirement (10.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. Discover German sells 1 one-off in-app purchase. String Theory Game asks for nothing beyond the download.

Discover German ships an update every 23 months, String Theory Game every 2 days. The most recent releases landed on October 7, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | Discover German | String Theory Game |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/string-theory-game/id6479223958/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 23 months | **Every 2 days** |
| Monetization | — | Free |
| Size | 98 MB | 43 MB |
| Requires iOS | 13.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ibrahim Amer](https://appshunter.io/developer/1054899889) | [Andrew Viesta](https://appshunter.io/developer/1735241726) |

## What reviewers say

### Discover German

[App page](https://appshunter.io/ios/app/discover-german-3d/id1130137194)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock | $5.99 | one-time |


### String Theory Game

[App page](https://appshunter.io/ios/app/string-theory-game/id6479223958)

A vibrant puzzle game where you recreate patterns by drawing loops between pegs. Strategically place and overlap loops to match the target design with minimal moves. Offers handcrafted puzzles, daily challenges, and endless free play.

**Highlights:** Pattern matching puzzles, Loop drawing mechanics, Color-based loop filling, 60+ handcrafted puzzles, Daily challenges, Free play modes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Discover German free?

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

### Is String Theory Game free?

String Theory Game is free to download, with no in-app purchases.

### Do Discover German or String Theory Game have ads?

Neither Discover German nor String Theory Game shows ads.

### Which is updated more often, Discover German or String Theory Game?

Discover German ships an update every 23 months, and String Theory Game every 2 days. Most recently, Discover German was updated on October 7, 2026 and String Theory Game on October 9, 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.*