# Goldbach conjecture vs Eye Training｜TraceMaster

The clearest difference is device support: Eye Training｜TraceMaster at 3 against Goldbach conjecture's —. Eye Training｜TraceMaster also leads on iOS requirement (13.0 vs 16.0). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Goldbach conjecture | Eye Training｜TraceMaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/eye-trainingtracemaster/id6779860444/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | — | Yes |
| Update frequency | — | Every 5 days |
| Monetization | — | Ad-supported |
| Size | 1 MB | 71 MB |
| Requires iOS | 16.0 | **13.0** |
| Devices | — | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sungjun Kim](https://appshunter.io/developer/1602461985) | [Yeongse Kim](https://appshunter.io/developer/1705614265) |

## What reviewers say

### Goldbach conjecture

[App page](https://appshunter.io/ios/app/goldbach-conjecture/id6627338523)

**In-app purchases:** none


### Eye Training｜TraceMaster

[App page](https://appshunter.io/ios/app/eye-trainingtracemaster/id6779860444)

This game challenges you to follow a fast-moving target with your eyes and then identify it once it stops. It offers various motion patterns and difficulty levels to improve your dynamic vision. Play for just 3 minutes daily to sharpen reflexes and eye speed.

**Highlights:** Dynamic vision training, Fast-moving target tracking, Multiple motion patterns, Progress tracking with Vision Age, Endless Mode with leaderboards, Daily, weekly, monthly rankings

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

**In-app purchases:** none


## Frequently asked questions

### Is Goldbach conjecture free?

Goldbach conjecture is free to download, with no in-app purchases.

### Is Eye Training｜TraceMaster free?

Eye Training｜TraceMaster is free to download, with no in-app purchases.

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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.*