# Math Orbs vs DOGTOR 逗課

The clearest difference is price: DOGTOR 逗課 at Free against Math Orbs's $0.99. Math Orbs's advantage is in-app purchases (none vs 2) and ads (none vs shown). On update cadence and device support there is nothing between them.

DOGTOR 逗課 is free to download; Math Orbs costs $0.99 up front. DOGTOR 逗課 sells 2 in-app purchases, starting at $9.99 per month. Math Orbs asks for nothing beyond the download.

Math Orbs ships an update weekly, DOGTOR 逗課 every 10 days. The most recent releases landed on September 15, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | Math Orbs | DOGTOR 逗課 |
| --- | --- | --- |
| 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** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Weekly** | Every 10 days |
| Monetization | Paid | — |
| Size | 72 MB | 151 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Knowledge Vortex, LLC](https://appshunter.io/developer/1725396723) | [Bohua Chen](https://appshunter.io/developer/1814880685) |

## 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


### DOGTOR 逗課

[App page](https://appshunter.io/ios/app/dogtor/id6751773627)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DOGTOR PRO 月度專業版 | $9.99 | per month |
| DOGTOR PRO 年度專業版 | $99.99 | per year |


## Frequently asked questions

### Is Math Orbs free?

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

### Is DOGTOR 逗課 free?

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

### Do Math Orbs or DOGTOR 逗課 have ads?

DOGTOR 逗課 shows ads; Math Orbs does not.

### Which is updated more often, Math Orbs or DOGTOR 逗課?

Math Orbs ships an update weekly, and DOGTOR 逗課 every 10 days. Most recently, Math Orbs was updated on September 15, 2026 and DOGTOR 逗課 on September 28, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*