# CSP Maintenance vs qapdf

The clearest difference is device support: CSP Maintenance at 2 against qapdf's —. CSP Maintenance also leads on iOS requirement (15.6 vs 17.2). On price and in-app purchases there is nothing between them.

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

## The numbers

| Metric | CSP Maintenance | qapdf |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/qapdf/id6503184102/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | — |
| Update frequency | Every 3 weeks | — |
| Monetization | — | Free |
| Size | 50 MB | 1 MB |
| Requires iOS | **15.6** | 17.2 |
| Devices | **iPhone, iPod** | — |
| Age rating | 4+ | 4+ |
| Developer | [Jet Chay](https://appshunter.io/developer/1657550949) | [Sau Sheong Chang](https://appshunter.io/developer/557180241) |

## What reviewers say

### CSP Maintenance

[App page](https://appshunter.io/ios/app/csp-maintenance/id6444873396)

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

**In-app purchases:** none


### qapdf

[App page](https://appshunter.io/ios/app/qapdf/id6503184102)

Interact with your PDF documents by asking questions and receiving answers directly from their content. This utility supports large files, enabling comprehensive analysis and information retrieval.

**Highlights:** View PDF files, Chat with PDF content, Ask questions about documents, Receive answers from PDFs, Supports large files (up to 1 million tokens)

**In-app purchases:** none


## Frequently asked questions

### Is CSP Maintenance free?

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

### Is qapdf free?

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

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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.*