# 乘法題目練習 vs protostar

The clearest difference is price: protostar at Free against 乘法題目練習's $4.99. protostar also leads on update cadence (every 3 weeks vs every 20 months) and iOS requirement (10 vs 15.0). 乘法題目練習's advantage is in-app purchases (none vs 1) and ads (none vs shown). On rating and ratings volume there is nothing between them.

protostar is free to download; 乘法題目練習 costs $4.99 up front. protostar sells 1 one-off in-app purchase. 乘法題目練習 asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for 乘法題目練習 against 5.0 for protostar. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

乘法題目練習 ships an update every 20 months, protostar every 3 weeks. The most recent releases landed on October 14, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | 乘法題目練習 | protostar |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/id1492244702/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/protostar/id1504821938/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 20 months | **Every 3 weeks** |
| Monetization | — | Free with in-app purchases |
| Size | 24 MB | 155 MB |
| Requires iOS | 15.0 | **10** |
| Devices | **iPhone, iPad, iPod, Mac** | iPad |
| Age rating | 4+ | 4+ |
| Developer | [Hamster Force Multimedia Ltd.](https://appshunter.io/developer/443416476) | [Longzhe Education Technology (Shanghai) Co., Ltd.](https://appshunter.io/developer/1504821937) |

## What reviewers say

### 乘法題目練習

[App page](https://appshunter.io/ios/app/id1492244702)

**In-app purchases:** none


### protostar

[App page](https://appshunter.io/ios/app/protostar/id1504821938)

This educational app is designed for students aged 7-12, offering a platform for watching learning videos and playing interactive games. It is exclusively for users of the protostar education company and is available on iPad.

**Highlights:** Learning videos, Educational games, Preview content, Review content, Designed for ages 7-12

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Protostar English Course | $299.99 | one-time |


## Frequently asked questions

### Is 乘法題目練習 free?

乘法題目練習 costs $4.99, with no in-app purchases.

### Is protostar free?

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

### Which has better reviews, 乘法題目練習 or protostar?

乘法題目練習 and protostar are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.

### Do 乘法題目練習 or protostar have ads?

protostar shows ads; 乘法題目練習 does not.

### Which is updated more often, 乘法題目練習 or protostar?

乘法題目練習 ships an update every 20 months, and protostar every 3 weeks. Most recently, 乘法題目練習 was updated on October 14, 2026 and protostar on October 4, 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.*