# 笔杆论文 vs i交院

The clearest difference is in-app purchases: i交院 at none against 笔杆论文's 19. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 笔杆论文 sells 19 one-off in-app purchases. i交院 asks for nothing beyond the download.

笔杆论文 ships an update every 11 days, i交院 every 3 weeks. The most recent releases landed on October 26, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 笔杆论文 | i交院 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 11 days** | Every 3 weeks |
| Size | 58 MB | 94 MB |
| Requires iOS | 12.0 | **11.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Wuhan Wendebao Technology Co., Ltd.](https://appshunter.io/developer/1480808833) | [上海树维信息科技有限公司](https://appshunter.io/developer/994850925) |

## What reviewers say

### 笔杆论文

[App page](https://appshunter.io/ios/app/id1492196127)

**Features:** macOS Compatibility

**In-app purchases (19)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 写作会员（月度） | $3.99 | one-time |
| 一键出稿服务_108 | $14.99 | one-time |
| 一键出稿服务_123 | $17.99 | one-time |
| 一键出稿服务_138 | $19.99 | one-time |
| 一键出稿服务_143 | $19.99 | one-time |
| 一键出稿服务_128 | $19.99 | one-time |
| 一键出稿服务_163 | $22.99 | one-time |
| 一键出稿服务_168 | $24.99 | one-time |
| 一键出稿服务_188 | $29.99 | one-time |
| 一键出稿服务_428 | $59.99 | one-time |
| 一键出稿服务_438 | $59.99 | one-time |
| 一键出稿服务_448 | $59.99 | one-time |
| 一键出稿服务_393 | $59.99 | one-time |
| 一键出稿服务_383 | $59.99 | one-time |
| 一键出稿服务_408 | $59.99 | one-time |
| 一键出稿服务_498 | $69.99 | one-time |
| 一键出稿服务_468 | $69.99 | one-time |
| 一键出稿服务_898 | $129.99 | one-time |
| 一键出稿服务_1998 | $299.99 | one-time |


### i交院

[App page](https://appshunter.io/ios/app/i/id1595531684)

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

**In-app purchases:** none


## Frequently asked questions

### Is 笔杆论文 free?

笔杆论文 is free to download, with in-app purchases available.

### Is i交院 free?

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

### Do 笔杆论文 or i交院 have ads?

Neither 笔杆论文 nor i交院 shows ads.

### Which is updated more often, 笔杆论文 or i交院?

笔杆论文 ships an update every 11 days, and i交院 every 3 weeks. Most recently, 笔杆论文 was updated on October 26, 2026 and i交院 on October 30, 2026.

---

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