# Abacus' brain Lite vs Eye Training｜TraceMaster

The clearest difference is review sentiment: Eye Training｜TraceMaster at 100% against Abacus' brain Lite's 56%. Eye Training｜TraceMaster also leads on rating (5.0 vs 2.0) and update cadence (every 5 days vs every 9 days). Abacus' brain Lite's advantage is ads (none vs shown) and monetization model (free vs ad-supported). On price, ratings volume, in-app purchases and device support there is nothing between them.

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

Eye Training｜TraceMaster holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 56% of Abacus' brain Lite's written reviews are positive against 100% of Eye Training｜TraceMaster's.

Abacus' brain Lite ships an update every 9 days, Eye Training｜TraceMaster every 5 days. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Abacus' brain Lite | Eye Training｜TraceMaster |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/abacus-brain-lite/id382584167/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/eye-trainingtracemaster/id6779860444/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 56.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 9 days | **Every 5 days** |
| Monetization | **Free** | Ad-supported |
| Size | 5 MB | 71 MB |
| Requires iOS | **6.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [POPPO STUDIO](https://appshunter.io/developer/304529440) | [Yeongse Kim](https://appshunter.io/developer/1705614265) |

## What reviewers say

### Abacus' brain Lite

[App page](https://appshunter.io/ios/app/abacus-brain-lite/id382584167)

This application helps users improve their mental calculation speed by simulating abacus use. It offers various levels of difficulty, progressing from single digits with longer time limits to faster calculations.

**Highlights:** Abacus simulation for mental calculation, Sequential addition of numbers, Adjustable difficulty levels, Flash mental calculation practice, Improve calculation speed

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

**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 Abacus' brain Lite free?

Abacus' brain Lite 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.

### Which has better reviews, Abacus' brain Lite or Eye Training｜TraceMaster?

Eye Training｜TraceMaster is rated higher. Abacus' brain Lite averages 2.0 out of 5 from 1 ratings, while Eye Training｜TraceMaster averages 5.0 from 1 ratings.

### Do Abacus' brain Lite or Eye Training｜TraceMaster have ads?

Eye Training｜TraceMaster shows ads; Abacus' brain Lite does not.

### Which is updated more often, Abacus' brain Lite or Eye Training｜TraceMaster?

Abacus' brain Lite ships an update every 9 days, and Eye Training｜TraceMaster every 5 days. Most recently, Abacus' brain Lite was updated on November 6, 2026 and Eye Training｜TraceMaster on November 5, 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.*