# 写作助手 vs Phone Sync

The clearest difference is update cadence: Phone Sync at every 2 months against 写作助手's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. 写作助手 sells 3 in-app purchases, starting at $4.99 per 7 days and Phone Sync sells 3 in-app purchases, starting at $6.00 per 7 days. Whichever you choose, the download price is not the number that matters.

写作助手 ships an update every 4 months, Phone Sync every 2 months. The most recent releases landed on September 28, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 写作助手 | Phone Sync |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 2 months** |
| Size | 45 MB | 54 MB |
| Requires iOS | 15.0 | **14** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 9+ | 4+ |
| Developer | [应夏 陈](https://appshunter.io/developer/1842122745) | [鸿滔 卢](https://appshunter.io/developer/1857713238) |

## What reviewers say

### 写作助手

[App page](https://appshunter.io/ios/app/ai/id6756476932)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 周会员 | $4.99 | per 7 days |
| 月会员 | $5.99 | one-time |
| 年会员 | $14.99 | one-time |


### Phone Sync

[App page](https://appshunter.io/ios/app/phone-sync-data-transfer/id6760521008)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly membership | $6.00 | per 7 days |
| Monthly membership | $13.00 | per month |
| Annual Membership | $28.00 | one-time |


## Frequently asked questions

### Is 写作助手 free?

写作助手 is free to download, with in-app purchases available.

### Is Phone Sync free?

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

### Do 写作助手 or Phone Sync have ads?

Neither 写作助手 nor Phone Sync shows ads.

### Which is updated more often, 写作助手 or Phone Sync?

写作助手 ships an update every 4 months, and Phone Sync every 2 months. Most recently, 写作助手 was updated on September 28, 2026 and Phone Sync 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.*