# HWM PRISM vs Simple Pdf

The clearest difference is in-app purchases: HWM PRISM at none against Simple Pdf's 3. HWM PRISM also leads on ads (none vs shown) and iOS requirement (10.0 vs 15.5). Simple Pdf's advantage is update cadence (every 3 months vs every 8 months). On price and device support there is nothing between them.

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

HWM PRISM ships an update every 8 months, Simple Pdf every 3 months. The most recent releases landed on October 19, 2026 and November 7, 2026 respectively.

## The numbers

| Metric | HWM PRISM | Simple Pdf |
| --- | --- | --- |
| 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 | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 3 months** |
| Monetization | — | Free with in-app purchases |
| Size | 38 MB | 77 MB |
| Requires iOS | **10.0** | 15.5 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [HWM-Water Ltd](https://appshunter.io/developer/1250353559) | [AMARDEEP DHILLON](https://appshunter.io/developer/999752727) |

## What reviewers say

### HWM PRISM

[App page](https://appshunter.io/ios/app/hwm-prism/id1410739412)

**Features:** macOS Compatibility

**In-app purchases:** none


### Simple Pdf

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

This comprehensive utility allows users to view, edit, and manage PDF documents. Features include text editing, digital signatures, OCR for text extraction, document scanning, and file compression. It offers a fast and private offline experience for all your PDF needs.

**Highlights:** Fast PDF viewing and search, Read aloud functionality (TTS), OCR for text extraction, Edit PDF text and redact, Digital signatures, HD document scanning, Merge and split PDFs, PDF compression

**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 |


## Frequently asked questions

### Is HWM PRISM free?

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

### Is Simple Pdf free?

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

### Do HWM PRISM or Simple Pdf have ads?

Simple Pdf shows ads; HWM PRISM does not.

### Which is updated more often, HWM PRISM or Simple Pdf?

HWM PRISM ships an update every 8 months, and Simple Pdf every 3 months. Most recently, HWM PRISM was updated on October 19, 2026 and Simple Pdf on November 7, 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.*