# Smart Abacus vs Three Sided Flashcards

The clearest difference is iOS requirement: Smart Abacus at 16.4 against Three Sided Flashcards's 26.1. 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.

## The numbers

| Metric | Smart Abacus | Three Sided Flashcards |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/smart-abacus-mental-math/id6761702036/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 11 days | — |
| Monetization | Free | — |
| Size | 50 MB | 4 MB |
| Requires iOS | **16.4** | 26.1 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 9+ |
| Developer | [ZerwOne Network, LLC](https://appshunter.io/developer/1792742872) | [Sven Langsdorf](https://appshunter.io/developer/1352711594) |

## What reviewers say

### Smart Abacus

[App page](https://appshunter.io/ios/app/smart-abacus-mental-math/id6761702036)

Master mental math using the Japanese Soroban method with interactive practice and structured lessons. Improve speed, focus, and accuracy through gamified milestones and progress tracking.

**Highlights:** Digital Soroban with realistic bead movement, Step-by-step learning paths, Flash Tests for speed and accuracy, Voice dictation for training, Progress tracking and insights, Gamified milestones and achievements

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

**In-app purchases:** none


### Three Sided Flashcards

[App page](https://appshunter.io/ios/app/three-sided-flashcards/id6794187033)

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

**In-app purchases:** none


## Frequently asked questions

### Is Smart Abacus free?

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

### Is Three Sided Flashcards free?

Three Sided Flashcards is free to download, with no in-app purchases.

### Do Smart Abacus or Three Sided Flashcards have ads?

Neither Smart Abacus nor Three Sided Flashcards shows ads.

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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.*