# Practice2Master Abacus vs Low Vision Simulator

The clearest difference is update cadence: Low Vision Simulator at monthly against Practice2Master Abacus's every 4 months. Practice2Master Abacus's advantage is iOS requirement (14.0 vs 17.0). On price, ads, 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.

Practice2Master Abacus ships an update every 4 months, Low Vision Simulator monthly. The most recent releases landed on September 12, 2026 and August 28, 2026 respectively.

## The numbers

| Metric | Practice2Master Abacus | Low Vision Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.3 (3 ratings)](https://appshunter.io/ios/app/low-vision-simulator/id6480382551/reviews)** |
| Number of ratings | — | **3** |
| Positive reviews | — | 50.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Monthly** |
| Monetization | — | Free |
| Size | 15 MB | 5 MB |
| Requires iOS | **14.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [American Printing House for the Blind (APH)](https://appshunter.io/developer/704570515) | [Yasushi Nakano](https://appshunter.io/developer/1601764151) |

## What reviewers say

### Practice2Master Abacus

[App page](https://appshunter.io/ios/app/practice2master-abacus/id1532042521)

**Features:** macOS Compatibility

**In-app purchases:** none


### Low Vision Simulator

[App page](https://appshunter.io/ios/app/low-vision-simulator/id6480382551)

Experience simulated visual impairments like blur, glare, and tunnel vision. This tool helps users understand and share low vision conditions, even capturing photos and videos during simulations. It offers remote control for adjusting effects while previewing.

**Highlights:** Simulates blur, glare, tunnel vision, central scotoma, nystagmus, Reproduces complex visual situations, Shareable low-vision settings, Capture photos and videos during simulation, Remote device connection for effect adjustment, Supports iPhone and iPad

**In-app purchases:** none


## Frequently asked questions

### Is Practice2Master Abacus free?

Practice2Master Abacus is free to download, with no in-app purchases.

### Is Low Vision Simulator free?

Low Vision Simulator is free to download, with no in-app purchases.

### Do Practice2Master Abacus or Low Vision Simulator have ads?

Neither Practice2Master Abacus nor Low Vision Simulator shows ads.

### Which is updated more often, Practice2Master Abacus or Low Vision Simulator?

Practice2Master Abacus ships an update every 4 months, and Low Vision Simulator monthly. Most recently, Practice2Master Abacus was updated on September 12, 2026 and Low Vision Simulator on August 28, 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.*