# Bigbrain Soroban vs LDA

The clearest difference is in-app purchases: LDA at none against Bigbrain Soroban's 1. LDA also leads on iOS requirement (13.0 vs 15.0). Bigbrain Soroban's advantage is update cadence (every 4 days vs every 3 months). On price, ads and device support there is nothing between them.

Both are free to download. Bigbrain Soroban sells 1 one-off in-app purchase. LDA asks for nothing beyond the download.

Bigbrain Soroban ships an update every 4 days, LDA every 3 months. The most recent releases landed on October 22, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Bigbrain Soroban | LDA |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (7 ratings)](https://appshunter.io/ios/app/bigbrain-soroban/id1563917231/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 66.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 4 days** | Every 3 months |
| Monetization | Free | — |
| Size | 234 MB | 57 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [TAM TRI LUC TRAINING JOINT STOCK COMPANY](https://appshunter.io/developer/1448811815) | [Minh Nguyen Ba](https://appshunter.io/developer/1549498900) |

## What reviewers say

### Bigbrain Soroban

[App page](https://appshunter.io/ios/app/bigbrain-soroban/id1563917231)

This educational app helps children develop super-fast mental calculation skills and comprehensive brain thinking. Designed by leading experts, it uses lessons to foster a love for math, improve concentration, and enhance creativity and memory.

**Highlights:** Develop super-fast mental calculation, Enhance comprehensive brain thinking, Improve concentration and focus, Stimulate and balance brain hemisphere development, Boost creativity and memory, Interactive lessons with visual aids

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Phiên bản đầy đủ | $89.99 | one-time |


### LDA

[App page](https://appshunter.io/ios/app/lda-e/id6747794644)

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

**In-app purchases:** none


## Frequently asked questions

### Is Bigbrain Soroban free?

Bigbrain Soroban is free to download, with in-app purchases available.

### Is LDA free?

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

### Do Bigbrain Soroban or LDA have ads?

Neither Bigbrain Soroban nor LDA shows ads.

### Which is updated more often, Bigbrain Soroban or LDA?

Bigbrain Soroban ships an update every 4 days, and LDA every 3 months. Most recently, Bigbrain Soroban was updated on October 22, 2026 and LDA on October 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.*