# 业路百文 vs i 开大

The clearest difference is iOS requirement: 业路百文 at 10.0 against i 开大's 13.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

业路百文 ships an update every 2 months, i 开大 every 3 months. The most recent releases landed on November 11, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | 业路百文 | i 开大 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Size | 82 MB | 23 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [河南中冠网络科技有限公司](https://appshunter.io/developer/960504595) | [Kaifeng University](https://appshunter.io/developer/1486289863) |

## What reviewers say

### 业路百文

[App page](https://appshunter.io/ios/app/id1317658735)

**In-app purchases:** none


### i 开大

[App page](https://appshunter.io/ios/app/i/id1477281717)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 业路百文 free?

业路百文 is free to download, with no in-app purchases.

### Is i 开大 free?

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

### Do 业路百文 or i 开大 have ads?

Neither 业路百文 nor i 开大 shows ads.

### Which is updated more often, 业路百文 or i 开大?

业路百文 ships an update every 2 months, and i 开大 every 3 months. Most recently, 业路百文 was updated on November 11, 2026 and i 开大 on November 7, 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.*