# Quick Mental Math vs Mahjong Jussei

Quick Mental Math and Mahjong Jussei are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Quick Mental Math sells 1 one-off in-app purchase and Mahjong Jussei sells 2 in-app purchases, starting at $4.99 per month. Whichever you choose, the download price is not the number that matters.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on October 14, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | Quick Mental Math | Mahjong Jussei |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (5 ratings)](https://appshunter.io/ios/app/quick-mental-math/id1520620798/reviews)** | — |
| Number of ratings | **5** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | Free with in-app purchases | — |
| Size | 13 MB | 27 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Phu Vu](https://appshunter.io/developer/1512811567) | [飞 费](https://appshunter.io/developer/6782095618) |

## What reviewers say

### Quick Mental Math

[App page](https://appshunter.io/ios/app/quick-mental-math/id1520620798)

Enhance your arithmetic abilities with this app, offering practice in addition, subtraction, multiplication, and division. Engage in competitive one-on-one races or customize your own practice sessions. Track your progress with detailed statistics.

**Highlights:** Addition, subtraction, multiplication, division practice, Randomized questions, One-on-one races, Custom race lobbies, Customizable practice sessions, Stat tracking

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Access Pass | $0.99 | one-time |


### Mahjong Jussei

[App page](https://appshunter.io/ios/app/mahjong-jussei/id6782351906)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Mahjong Jussei Pro Monthly | $4.99 | per month |
| Mahjong Jussei Pro Yearly | $39.99 | per year |


## Frequently asked questions

### Is Quick Mental Math free?

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

### Is Mahjong Jussei free?

Mahjong Jussei is free to download, with in-app purchases available.

### Do Quick Mental Math or Mahjong Jussei have ads?

Neither Quick Mental Math nor Mahjong Jussei shows ads.

### Which is updated more often, Quick Mental Math or Mahjong Jussei?

Quick Mental Math ships an update every 3 weeks, and Mahjong Jussei every 3 weeks. Most recently, Quick Mental Math was updated on October 14, 2026 and Mahjong Jussei on October 15, 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.*