# 九斗 vs MathBench

九斗 and MathBench 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. 九斗 sells 10 one-off in-app purchases and MathBench sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

九斗 ships an update every 3 days, MathBench weekly. Both last shipped on November 6, 2026.

## The numbers

| Metric | 九斗 | MathBench |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.0 (8 ratings)](https://appshunter.io/ios/app/id1239671074/reviews)** | — |
| Number of ratings | **8** | — |
| Positive reviews | 9.5% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | Free with in-app purchases | — |
| Size | 251 MB | 7 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hunan Sanwen Online Education Technology Co., Ltd](https://appshunter.io/developer/1577284953) | [献慧 陈](https://appshunter.io/developer/1896370005) |

## What reviewers say

### 九斗

[App page](https://appshunter.io/ios/app/id1239671074)

This app enhances teaching and learning for university students and faculty with AR/VR capabilities. It offers tools for classroom organization, student progress tracking, and interactive, gamified learning experiences.

**Highlights:** AR/VR learning environments, Classroom organization tools, Student progress tracking, Interactive 3D animations, Gamified learning, Instant teaching information access

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 九斗币 | $0.99 | one-time |
| 9九斗币 | $1.99 | one-time |
| 13九斗币 | $2.99 | one-time |
| 21九斗币 | $3.99 | one-time |
| 42九斗币 | $8.99 | one-time |
| 70九斗币 | $14.99 | one-time |
| 108九斗币 | $15.99 | one-time |
| 168九斗币 | $25.99 | one-time |
| 198九斗币 | $29.99 | one-time |
| 140九斗币 | $29.99 | one-time |


### MathBench

[App page](https://appshunter.io/ios/app/mathbench-equation-solver/id6824338641)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support, iPhone Duo support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Lifetime | $4.99 | one-time |


## Frequently asked questions

### Is 九斗 free?

九斗 is free to download, with in-app purchases available.

### Is MathBench free?

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

### Do 九斗 or MathBench have ads?

Neither 九斗 nor MathBench shows ads.

### Which is updated more often, 九斗 or MathBench?

九斗 ships an update every 3 days, and MathBench weekly. Most recently, 九斗 was updated on November 6, 2026 and MathBench on November 6, 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.*