# Volume and Geometry vs 掌门1对1网课

The clearest difference is in-app purchases: 掌门1对1网课 at none against Volume and Geometry's 2. Volume and Geometry's advantage is update cadence (every 3 weeks vs every 11 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Volume and Geometry sells 2 one-off in-app purchases. 掌门1对1网课 asks for nothing beyond the download.

Volume and Geometry ships an update every 3 weeks, 掌门1对1网课 every 11 months. The most recent releases landed on August 6, 2026 and September 23, 2026 respectively.

## The numbers

| Metric | Volume and Geometry | 掌门1对1网课 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (178 ratings)](https://appshunter.io/ios/app/volume-and-geometry/id1280996873/reviews)** | — |
| Number of ratings | **178** | — |
| Positive reviews | 20.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 11 months |
| Monetization | Free with in-app purchases | — |
| Size | 13 MB | 27 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Maxime Haeyaert](https://appshunter.io/developer/1274130669) | [上海掌小门教育科技有限公司](https://appshunter.io/developer/1433379035) |

## What reviewers say

### Volume and Geometry

[App page](https://appshunter.io/ios/app/volume-and-geometry/id1280996873)

Calculate the volume of various geometric shapes quickly and easily. This app provides step-by-step calculation explanations, making it ideal for learning and understanding mathematical concepts.

**Highlights:** Volume calculation for geometric solids, Clear and intuitive interface, Step-by-step calculation explanations, Instant results, Learning and review tool

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Advertising | $0.99 | one-time |
| Detailed calculations | $0.99 | one-time |


### 掌门1对1网课

[App page](https://appshunter.io/ios/app/11/id1665340581)

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

**In-app purchases:** none


## Frequently asked questions

### Is Volume and Geometry free?

Volume and Geometry is free to download, with in-app purchases available.

### Is 掌门1对1网课 free?

掌门1对1网课 is free to download, with no in-app purchases.

### Do Volume and Geometry or 掌门1对1网课 have ads?

Neither Volume and Geometry nor 掌门1对1网课 shows ads.

### Which is updated more often, Volume and Geometry or 掌门1对1网课?

Volume and Geometry ships an update every 3 weeks, and 掌门1对1网课 every 11 months. Most recently, Volume and Geometry was updated on August 6, 2026 and 掌门1对1网课 on September 23, 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.*