# Mental Calculation & Abacus vs Triple Rush!

The clearest difference is in-app purchases: Mental Calculation & Abacus at none against Triple Rush!'s 6. Mental Calculation & Abacus also leads on device support (3 vs 1) and iOS requirement (12.0 vs 16.6). Triple Rush!'s advantage is ads (none vs shown) and update cadence (weekly vs every 6 months). On price there is nothing between them.

Both are free to download. Triple Rush! sells 6 one-off in-app purchases. Mental Calculation & Abacus asks for nothing beyond the download.

Mental Calculation & Abacus ships an update every 6 months, Triple Rush! weekly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Mental Calculation & Abacus | Triple Rush! |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (4 ratings)](https://appshunter.io/ios/app/mental-calculation-and-abacus/id1582407909/reviews)** | — |
| Number of ratings | **4** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 6 months | **Weekly** |
| Monetization | Ad-supported | — |
| Size | 143 MB | 7 MB |
| Requires iOS | **12.0** | 16.6 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 12+ |
| Developer | [Park Jisang](https://appshunter.io/developer/995438886) | [IcePenguin's cruise diary](https://appshunter.io/developer/554578241) |

## What reviewers say

### Mental Calculation & Abacus

[App page](https://appshunter.io/ios/app/mental-calculation-and-abacus/id1582407909)

Engage in a fun and educational game designed to enhance mental calculation skills. Learn to use an abacus with an easy-to-follow tutorial and practice with diverse question types.

**Highlights:** Mental calculation practice, Abacus learning tutorial, Variety of practice questions, Suitable for all ages

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

**In-app purchases:** none


### Triple Rush!

[App page](https://appshunter.io/ios/app/triple-rush/id6749897281)

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Starter Gems | $1.99 | one-time |
| Value Gems | $4.99 | one-time |
| Popular Gems | $9.99 | one-time |
| Hero Gems | $19.99 | one-time |
| Pro Gems | $39.99 | one-time |
| Ultra Gems | $59.99 | one-time |


## Frequently asked questions

### Is Mental Calculation & Abacus free?

Mental Calculation & Abacus is free to download, with no in-app purchases.

### Is Triple Rush! free?

Triple Rush! is free to download, with in-app purchases available.

### Do Mental Calculation & Abacus or Triple Rush! have ads?

Mental Calculation & Abacus shows ads; Triple Rush! does not.

### Which is updated more often, Mental Calculation & Abacus or Triple Rush!?

Mental Calculation & Abacus ships an update every 6 months, and Triple Rush! weekly. Most recently, Mental Calculation & Abacus was updated on October 30, 2026 and Triple Rush! on October 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.*