# Simple Pdf vs Wave ScanFlex

The clearest difference is in-app purchases: Wave ScanFlex at none against Simple Pdf's 3. Wave ScanFlex also leads on iOS requirement (12.0 vs 15.5). Simple Pdf's advantage is update cadence (every 4 months vs every 52 months) and device support. On price there is nothing between them.

Both are free to download. Simple Pdf sells 3 in-app purchases, starting at $3.99 per month. Wave ScanFlex asks for nothing beyond the download.

Simple Pdf ships an update every 4 months, Wave ScanFlex every 52 months. The most recent releases landed on October 21, 2026 and October 3, 2026 respectively.

## The numbers

| Metric | Simple Pdf | Wave ScanFlex |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.2 (6 ratings)](https://appshunter.io/ios/app/simple-pdf-reader/id1513739391/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 28.6% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | — |
| Update frequency | **Every 4 months** | Every 52 months |
| Monetization | Free with in-app purchases | — |
| Size | 113 MB | 9 MB |
| Requires iOS | 15.5 | **12.0** |
| Devices | **iPhone, iPad, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [AMARDEEP DHILLON](https://appshunter.io/developer/999752727) | [Wave Ticket Ltd](https://appshunter.io/developer/1613838615) |

## What reviewers say

### Simple Pdf

[App page](https://appshunter.io/ios/app/simple-pdf-reader/id1513739391)

Easily view, manage, and create PDF files. This app allows you to open local PDFs, load them from the internet, and even scan documents with your camera. It also supports merging, splitting, converting PDFs to images, and adding signatures.

**Highlights:** View local PDF files, Scan documents and convert to PDF, Merge and split PDF files, Convert PDF to images, Add digital signatures, Organize and manage files

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock all features | $3.99 | per month |
| Unlock feature yearly | $29.99 | per year |
| Remove ads | $2.99 | one-time |


### Wave ScanFlex

[App page](https://appshunter.io/ios/app/wave-scanflex/id1613838613)

**In-app purchases:** none


## Frequently asked questions

### Is Simple Pdf free?

Simple Pdf is free to download, with in-app purchases available.

### Is Wave ScanFlex free?

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

### Which is updated more often, Simple Pdf or Wave ScanFlex?

Simple Pdf ships an update every 4 months, and Wave ScanFlex every 52 months. Most recently, Simple Pdf was updated on October 21, 2026 and Wave ScanFlex on October 3, 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.*