# Math Orbs vs 卡爾維特

The clearest difference is price: 卡爾維特 at Free against Math Orbs's $0.99. Math Orbs's advantage is update cadence (weekly vs every 23 months) and iOS requirement (13.0 vs 15.0). On ads, in-app purchases and device support there is nothing between them.

卡爾維特 is free to download; Math Orbs costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Math Orbs ships an update weekly, 卡爾維特 every 23 months. The most recent releases landed on October 19, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Math Orbs | 卡爾維特 |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (2 ratings)](https://appshunter.io/ios/app/math-orbs/id6475911131/reviews)** | — |
| Number of ratings | **2** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Weekly** | Every 23 months |
| Monetization | Paid | — |
| Size | 72 MB | 196 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Knowledge Vortex, LLC](https://appshunter.io/developer/1725396723) | [Chi Hsien Lai](https://appshunter.io/developer/1039759515) |

## What reviewers say

### Math Orbs

[App page](https://appshunter.io/ios/app/math-orbs/id6475911131)

This app offers Grade 1-6 algebra practice for children, allowing parents to track progress and identify areas of difficulty. It features interactive quests, collectible orbs, and a virtual scratchpad for calculations, making learning engaging and eliminating the need for workbooks.

**Highlights:** Grade 1-6 algebra practice, Parental progress tracking, Identify areas of struggle, Interactive quests, Collectible orbs, Virtual scratchpad

**Features:** Vision Pro support

**In-app purchases:** none


### 卡爾維特

[App page](https://appshunter.io/ios/app/id6736607212)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Math Orbs free?

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

### Is 卡爾維特 free?

卡爾維特 is free to download, with no in-app purchases.

### Do Math Orbs or 卡爾維特 have ads?

Neither Math Orbs nor 卡爾維特 shows ads.

### Which is updated more often, Math Orbs or 卡爾維特?

Math Orbs ships an update weekly, and 卡爾維特 every 23 months. Most recently, Math Orbs was updated on October 19, 2026 and 卡爾維特 on September 18, 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.*