# 九章 vs ComboReduce

The clearest difference is in-app purchases: 九章 at none against ComboReduce's 2. 九章 also leads on iOS requirement (9.0 vs 15.6). ComboReduce's advantage is update cadence (every 2 months vs every 5 months). On price, ads and device support there is nothing between them.

Both are free to download. ComboReduce sells 2 in-app purchases, starting at $1.99 per month. 九章 asks for nothing beyond the download.

九章 ships an update every 5 months, ComboReduce every 2 months. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 九章 | ComboReduce |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/comboreduce/id6757107116/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 2 months** |
| Monetization | — | Freemium |
| Size | 19 MB | 3 MB |
| Requires iOS | **9.0** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Shanghai Di'an Software Tech Co.,Ltd.](https://appshunter.io/developer/726881721) | [Didier ALCARAZ](https://appshunter.io/developer/1864570434) |

## What reviewers say

### 九章

[App page](https://appshunter.io/ios/app/id1515534654)

**Features:** macOS Compatibility

**In-app purchases:** none


### ComboReduce

[App page](https://appshunter.io/ios/app/comboreduce/id6757107116)

This tool helps organize and generate number grids for lotteries. It uses predefined combinatorial systems to reduce the number of grids based on your selected numbers. You can also check results against real draws.

**Highlights:** 5-number and 6-number formats, Select base numbers, Generate grids with predefined systems, Check results against real draws, Organize lottery numbers

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $1.99 | per month |
| Premium Annual | $17.99 | per year |


## Frequently asked questions

### Is 九章 free?

九章 is free to download, with no in-app purchases.

### Is ComboReduce free?

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

### Do 九章 or ComboReduce have ads?

Neither 九章 nor ComboReduce shows ads.

### Which is updated more often, 九章 or ComboReduce?

九章 ships an update every 5 months, and ComboReduce every 2 months. Most recently, 九章 was updated on November 7, 2026 and ComboReduce on October 30, 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.*