# PDFW·电子签名 vs SealMaker

The clearest difference is in-app purchases: SealMaker at none against PDFW·电子签名's 1. PDFW·电子签名's advantage is update cadence (every 3 weeks vs every 5 months) and iOS requirement (15.6 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. PDFW·电子签名 sells 1 one-off in-app purchase. SealMaker asks for nothing beyond the download.

PDFW·电子签名 ships an update every 3 weeks, SealMaker every 5 months. The most recent releases landed on October 6, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | PDFW·电子签名 | SealMaker |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 3 weeks** | Every 5 months |
| Size | 3 MB | 51 MB |
| Requires iOS | **15.6** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [上海寻程网络科技有限公司](https://appshunter.io/developer/1500716476) | [郑州山茶网络技术有限公司](https://appshunter.io/developer/1890882583) |

## What reviewers say

### PDFW·电子签名

[App page](https://appshunter.io/ios/app/pdfw/id6756837676)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁完整功能 | $29.99 | one-time |


### SealMaker

[App page](https://appshunter.io/ios/app/sealmaker/id6761686772)

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

**In-app purchases:** none


## Frequently asked questions

### Is PDFW·电子签名 free?

PDFW·电子签名 is free to download, with in-app purchases available.

### Is SealMaker free?

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

### Do PDFW·电子签名 or SealMaker have ads?

Neither PDFW·电子签名 nor SealMaker shows ads.

### Which is updated more often, PDFW·电子签名 or SealMaker?

PDFW·电子签名 ships an update every 3 weeks, and SealMaker every 5 months. Most recently, PDFW·电子签名 was updated on October 6, 2026 and SealMaker on September 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.*