# Math Oral Calculation vs 开局五个亿

The clearest difference is in-app purchases: Math Oral Calculation at none against 开局五个亿's 5. Math Oral Calculation also leads on review sentiment (50% vs 24%) and iOS requirement (10.0 vs 12.0). 开局五个亿's advantage is update cadence (every 5 weeks vs every 35 months). On price, ads, monetization model and device support there is nothing between them.

Math Oral Calculation costs $0.99 and 开局五个亿 $0.99 up front. 开局五个亿 sells 5 one-off in-app purchases. Math Oral Calculation asks for nothing beyond the download.

Math Oral Calculation ships an update every 35 months, 开局五个亿 every 5 weeks. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Math Oral Calculation | 开局五个亿 |
| --- | --- | --- |
| Price | $0.99 | $0.99 |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/math-oral-calculation/id1468252874/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | **50.0% of reviews** | 23.8% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 35 months | **Every 5 weeks** |
| Monetization | Paid | Paid |
| Size | 5 MB | 1.7 GB |
| Requires iOS | **10.0** | 12.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 17+ |
| Developer | [昆 李](https://appshunter.io/developer/1480980920) | [TIANJIN KUNYU TECHNOLOGY CO LTD](https://appshunter.io/developer/1647563391) |

## What reviewers say

### Math Oral Calculation

[App page](https://appshunter.io/ios/app/math-oral-calculation/id1468252874)

Test and improve your mental math skills with this engaging application. Suitable for all ages, from primary school students to advanced mathematicians, it offers a fun way to challenge your calculation abilities.

**Highlights:** Mental math challenges, Suitable for all ages, Two challenging modes, Track calculation skills, Daily math practice

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

**In-app purchases:** none


### 开局五个亿

[App page](https://appshunter.io/ios/app/id6744356917)

Embark on an entrepreneurial journey with a substantial starting capital. Build a business empire, make critical investment decisions, and navigate complex relationships with unique characters. Explore branching narratives and discover hidden stories shaped by your choices.

**Highlights:** Business empire building, Investment decision simulation, Interactive character relationships, Branching narrative paths, Hidden stories and Easter eggs, Real-world economics inspiration

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ¥6购买单章 | $0.99 | one-time |
| ¥12购买全部 | $1.99 | one-time |
| ¥18购买全部 | $2.99 | one-time |
| ¥24购买全部 | $2.99 | one-time |
| ¥30购买全部 | $3.99 | one-time |


## Frequently asked questions

### Is Math Oral Calculation free?

Math Oral Calculation costs $0.99, with no in-app purchases.

### Is 开局五个亿 free?

开局五个亿 costs $0.99, and also offers in-app purchases.

### Do Math Oral Calculation or 开局五个亿 have ads?

Neither Math Oral Calculation nor 开局五个亿 shows ads.

### Which is updated more often, Math Oral Calculation or 开局五个亿?

Math Oral Calculation ships an update every 35 months, and 开局五个亿 every 5 weeks. Most recently, Math Oral Calculation was updated on October 29, 2026 and 开局五个亿 on October 30, 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.*