# 明之算课外 vs 培优100

The clearest difference is in-app purchases: 培优100 at none against 明之算课外's 6. 培优100 also leads on ads (none vs shown). 明之算课外's advantage is iOS requirement (9.0 vs 12.0). On price, update cadence and device support there is nothing between them.

Both are free to download. 明之算课外 sells 6 one-off in-app purchases. 培优100 asks for nothing beyond the download.

明之算课外 ships an update every 6 weeks, 培优100 every 3 weeks. The most recent releases landed on October 10, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 明之算课外 | 培优100 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 6 weeks | **Every 3 weeks** |
| Size | 28 MB | 59 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [火明 蔡](https://appshunter.io/developer/1486723353) | [国云 李](https://appshunter.io/developer/1221763647) |

## What reviewers say

### 明之算课外

[App page](https://appshunter.io/ios/app/id1137104767)

**Features:** macOS Compatibility

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6L油量充值包 | $0.99 | one-time |
| 12L油量充值包 | $1.99 | one-time |
| 18L油量充值包 | $2.99 | one-time |
| 30L油量充值包 | $4.99 | one-time |
| 50L油量充值包 | $7.99 | one-time |
| 88L油量充值包 | $12.99 | one-time |


### 培优100

[App page](https://appshunter.io/ios/app/100/id1221763648)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 明之算课外 free?

明之算课外 is free to download, with in-app purchases available.

### Is 培优100 free?

培优100 is free to download, with no in-app purchases.

### Do 明之算课外 or 培优100 have ads?

明之算课外 shows ads; 培优100 does not.

### Which is updated more often, 明之算课外 or 培优100?

明之算课外 ships an update every 6 weeks, and 培优100 every 3 weeks. Most recently, 明之算课外 was updated on October 10, 2026 and 培优100 on October 5, 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.*