# SZST新质OA vs Offline PDF Editor

The clearest difference is in-app purchases: SZST新质OA at none against Offline PDF Editor's 4. SZST新质OA also leads on update cadence (weekly vs monthly) and iOS requirement (15.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Offline PDF Editor sells 4 in-app purchases, starting at $1.99 per 7 days. SZST新质OA asks for nothing beyond the download.

SZST新质OA ships an update weekly, Offline PDF Editor monthly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | SZST新质OA | Offline PDF Editor |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (10 ratings)](https://appshunter.io/ios/app/offline-pdf-editor-properpdf/id6760956540/reviews)** |
| Number of ratings | — | **10** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | — | Freemium |
| Size | 38 MB | 40 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [AIMEI GROUP CO.,LTD.](https://appshunter.io/developer/1849853194) | [CHIRANJEEVI PANDEY](https://appshunter.io/developer/1887013698) |

## What reviewers say

### SZST新质OA

[App page](https://appshunter.io/ios/app/szstoa/id6757375093)

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

**In-app purchases:** none


### Offline PDF Editor

[App page](https://appshunter.io/ios/app/offline-pdf-editor-properpdf/id6760956540)

This app offers a comprehensive suite of PDF editing tools that operate entirely offline on your device. It allows you to merge, split, compress, convert, sign, and fill PDFs without needing an internet connection or uploading your files to the cloud. An AI chat feature is also available for summarizing and querying your documents locally.

**Highlights:** 100% Offline PDF Editing, Merge, Split, Compress PDFs, Convert PDF to Image, Sign and Fill Forms, On-device AI Chat, Password Protection, Zero Cloud Uploads

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ProperPDF Pro — Weekly | $1.99 | per 7 days |
| ProperPDF Pro — Monthly | $3.99 | per month |
| ProperPDF Pro — Annual | $19.99 | per year |
| ProperPDF Pro - Lifetime Access | $29.99 | one-time |


## Frequently asked questions

### Is SZST新质OA free?

SZST新质OA is free to download, with no in-app purchases.

### Is Offline PDF Editor free?

Offline PDF Editor is free to download, with in-app purchases available.

### Do SZST新质OA or Offline PDF Editor have ads?

Neither SZST新质OA nor Offline PDF Editor shows ads.

### Which is updated more often, SZST新质OA or Offline PDF Editor?

SZST新质OA ships an update weekly, and Offline PDF Editor monthly. Most recently, SZST新质OA was updated on October 24, 2026 and Offline PDF Editor on October 25, 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.*