# KongDoc vs Simple PDF

The clearest difference is update cadence: KongDoc at every 5 days against Simple PDF's every 3 weeks. KongDoc also leads on iOS requirement (11.0 vs 16.6). On price, ads, in-app purchases and device support there is nothing between them.

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

KongDoc ships an update every 5 days, Simple PDF every 3 weeks. The most recent releases landed on October 10, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | KongDoc | Simple PDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (3 ratings)](https://appshunter.io/ios/app/simple-pdf-pdf-reader/id6746363157/reviews)** |
| Number of ratings | — | **3** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 days** | Every 3 weeks |
| Monetization | — | Free |
| Size | 91 MB | 12 MB |
| Requires iOS | **11.0** | 16.6 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [敏 罗](https://appshunter.io/developer/1543674579) | [Chang Keun Jung](https://appshunter.io/developer/1813307401) |

## What reviewers say

### KongDoc

[App page](https://appshunter.io/ios/app/kongdoc/id6444048339)

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

**In-app purchases:** none


### Simple PDF

[App page](https://appshunter.io/ios/app/simple-pdf-pdf-reader/id6746363157)

This application allows users to view, annotate, and edit PDF documents with ease. Features include document management, OCR capabilities, and a built-in scanner. It's designed for students and professionals to stay productive on the go.

**Highlights:** View, annotate, and edit PDFs, Full-text search and navigation, Free-draw and text box annotation, Page reordering and PDF merging, Scan documents with built-in camera, OCR for text extraction, Home screen widget for quick access

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

**In-app purchases:** none


## Frequently asked questions

### Is KongDoc free?

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

### Is Simple PDF free?

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

### Do KongDoc or Simple PDF have ads?

Neither KongDoc nor Simple PDF shows ads.

### Which is updated more often, KongDoc or Simple PDF?

KongDoc ships an update every 5 days, and Simple PDF every 3 weeks. Most recently, KongDoc was updated on October 10, 2026 and Simple PDF on October 6, 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.*