# npiSoroban vs Math Flash Cards

The clearest difference is review sentiment: npiSoroban at 100% against Math Flash Cards's 0%. npiSoroban also leads on in-app purchases (none vs 6) and iOS requirement (5.1.1 vs 15.0). Math Flash Cards's advantage is rating (3.8 vs 3.4) and update cadence (every 4 weeks vs every 5 months). On price, ratings volume, ads and device support there is nothing between them.

Both are free to download. Math Flash Cards sells 6 in-app purchases, starting at $2.99 per month. npiSoroban asks for nothing beyond the download.

Math Flash Cards holds the better App Store score, 3.8 against 3.4. Both are backed by a comparable volume of ratings — 5 and 4 respectively. Written reviews complicate that: 100% of npiSoroban's written reviews are positive against 0% of Math Flash Cards's, so the app with the better star average is not the one people write more warmly about.

npiSoroban ships an update every 5 months, Math Flash Cards every 4 weeks. The most recent releases landed on June 11, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | npiSoroban | Math Flash Cards |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.4 (5 ratings)](https://appshunter.io/ios/app/npisoroban-iphone-edition/id586798520/reviews) | **[3.8 (4 ratings)](https://appshunter.io/ios/app/math-flash-cards-mathx/id6762158994/reviews)** |
| Number of ratings | **5** | 4 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 4 weeks** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 95 MB | 3 MB |
| Requires iOS | **5.1.1** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Nonpareil Institute](https://appshunter.io/developer/401989715) | [Sandratra Razafindralambo](https://appshunter.io/developer/556442767) |

## What reviewers say

### npiSoroban

[App page](https://appshunter.io/ios/app/npisoroban-iphone-edition/id586798520)

Learn to use the Japanese abacus, or soroban, with narrated tutorials on your iPhone or iPad. Master arithmetic with this ancient tool, now digitized for modern learning.

**Highlights:** Digital soroban (abacus), Narrated tutorials, Arithmetic practice, Educational tool, Supports iPhone and iPad

**Features:** macOS Compatibility

**In-app purchases:** none


### Math Flash Cards

[App page](https://appshunter.io/ios/app/math-flash-cards-mathx/id6762158994)

This app offers fast, focused sessions to improve mental math skills. Users can practice various operations, customize difficulty, and track their progress with instant feedback. It's designed for daily practice to build number fluency and confidence.

**Highlights:** Practice addition, subtraction, multiplication, division, Customizable difficulty levels, Keypad or multiple choice input, Instant feedback and session summaries, Progress tracking over time, Offline functionality

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| MathX Pro (Monthly) | $2.99 | per month |
| MathX Pro (Annual) | $17.99 | per year |
| Starter Upgrade | $7.99 | one-time |
| Discounted Upgrade | $9.99 | one-time |
| Pro Upgrade | $12.99 | one-time |
| MathX Pro (Lifetime) | $24.99 | one-time |


## Frequently asked questions

### Is npiSoroban free?

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

### Is Math Flash Cards free?

Math Flash Cards is free to download, with in-app purchases available.

### Which has better reviews, npiSoroban or Math Flash Cards?

Math Flash Cards is rated higher. npiSoroban averages 3.4 out of 5 from 5 ratings, while Math Flash Cards averages 3.8 from 4 ratings.

### Do npiSoroban or Math Flash Cards have ads?

Neither npiSoroban nor Math Flash Cards shows ads.

### Which is updated more often, npiSoroban or Math Flash Cards?

npiSoroban ships an update every 5 months, and Math Flash Cards every 4 weeks. Most recently, npiSoroban was updated on June 11, 2026 and Math Flash Cards on September 20, 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.*