# Abacus Mental Math Training vs Indigo Math Abacus for kids

The clearest difference is review sentiment: Indigo Math Abacus for kids at 63% against Abacus Mental Math Training's 20%. Abacus Mental Math Training's advantage is rating (4.1 vs 2.0) and ratings volume (31 vs 1). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Abacus Mental Math Training sells 1 one-off in-app purchase and Indigo Math Abacus for kids sells 3 in-app purchases, starting at $5.99 per month. Whichever you choose, the download price is not the number that matters.

Abacus Mental Math Training holds the better App Store score, 4.1 against 2.0. That said, the two scores are not equally well evidenced: Abacus Mental Math Training has 31 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 20% of Abacus Mental Math Training's written reviews are positive against 63% of Indigo Math Abacus for kids's, so the app with the better star average is not the one people write more warmly about.

Abacus Mental Math Training ships an update monthly, Indigo Math Abacus for kids every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Abacus Mental Math Training | Indigo Math Abacus for kids |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (31 ratings)](https://appshunter.io/ios/app/abacus-mental-math-training/id6449295111/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/indigo-math-abacus-for-kids/id6450366535/reviews) |
| Number of ratings | **31** | 1 |
| Positive reviews | 20.0% of reviews | **62.5% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 34 MB | 75 MB |
| Requires iOS | **10.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Peikun Duan](https://appshunter.io/developer/1240254007) | [INDYGO MENTAL, TOV](https://appshunter.io/developer/1692935899) |

## What reviewers say

### Abacus Mental Math Training

[App page](https://appshunter.io/ios/app/abacus-mental-math-training/id6449295111)

This app offers professional training and assessment for abacus mental calculation and flash calculation, adhering to international grading standards. It features challenge and custom modes to help users improve their math and speed calculation skills.

**Highlights:** Adheres to World Abacus Mental Calculation Federation standards, Challenge Mode with 10 levels and 200 stages, Custom Mode for Flash Calculation and Abacus practice, Adjustable calculation parameters (number range, digits, time), Gradual difficulty progression, Simulates exam conditions

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.59 | one-time |


### Indigo Math Abacus for kids

[App page](https://appshunter.io/ios/app/indigo-math-abacus-for-kids/id6450366535)

This app offers interactive mental math and brain training for children. It uses gamified tasks and an abacus visualization to improve calculation speed, focus, and logical thinking. Designed to enhance mathematical intuition and academic performance.

**Highlights:** Mental calculations practice, Abacus (Soroban) visualization, Gamified learning tasks, Adjustable complexity levels, User-friendly interface, Improves focus and concentration

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 month | $5.99 | per month |
| 3 months | $80.99 | per 3 months |
| year | $304.99 | per year |


## Frequently asked questions

### Is Abacus Mental Math Training free?

Abacus Mental Math Training is free to download, with in-app purchases available.

### Is Indigo Math Abacus for kids free?

Indigo Math Abacus for kids is free to download, with in-app purchases available.

### Which has better reviews, Abacus Mental Math Training or Indigo Math Abacus for kids?

Abacus Mental Math Training is rated higher. Abacus Mental Math Training averages 4.1 out of 5 from 31 ratings, while Indigo Math Abacus for kids averages 2.0 from 1 ratings.

### Do Abacus Mental Math Training or Indigo Math Abacus for kids have ads?

Both Abacus Mental Math Training and Indigo Math Abacus for kids show ads.

### Which is updated more often, Abacus Mental Math Training or Indigo Math Abacus for kids?

Abacus Mental Math Training ships an update monthly, and Indigo Math Abacus for kids every 3 weeks. Most recently, Abacus Mental Math Training was updated on October 24, 2026 and Indigo Math Abacus for kids on October 24, 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.*