# SpinopelvicMobilityApp vs ChatPDF

The clearest difference is price: ChatPDF at Free against SpinopelvicMobilityApp's $9.99. ChatPDF also leads on update cadence (every 4 days vs every 10 months). SpinopelvicMobilityApp's advantage is in-app purchases (none vs 2) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

ChatPDF is free to download; SpinopelvicMobilityApp costs $9.99 up front. ChatPDF sells 2 in-app purchases, starting at $14.99 per month. SpinopelvicMobilityApp asks for nothing beyond the download.

SpinopelvicMobilityApp ships an update every 10 months, ChatPDF every 4 days. The most recent releases landed on October 7, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | SpinopelvicMobilityApp | ChatPDF |
| --- | --- | --- |
| Price | $9.99 | **Free** |
| Rating | — | **[4.6 (92 ratings)](https://appshunter.io/ios/app/chatpdf-chat-pdf-ai/id6742454061/reviews)** |
| Number of ratings | — | **92** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 10 months | **Every 4 days** |
| Monetization | — | Free with in-app purchases |
| Size | 1 MB | 41 MB |
| Requires iOS | 15.6 | 15.6 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [ORTHOPRACTIS.COM SINGLE MEMBER P.C.](https://appshunter.io/developer/1286360877) | [ChatPDF GmbH](https://appshunter.io/developer/1711436087) |

## What reviewers say

### SpinopelvicMobilityApp

[App page](https://appshunter.io/ios/app/spinopelvicmobilityapp/id1369972895)

**Features:** Vision Pro support

**In-app purchases:** none


### ChatPDF

[App page](https://appshunter.io/ios/app/chatpdf-chat-pdf-ai/id6742454061)

This AI-powered tool allows you to ask questions and get summaries directly from your PDF documents. It supports multiple files, OCR, and multilingual interactions, making complex information easily accessible.

**Highlights:** Instant answers from PDFs, Quick document summaries, Chat with multiple PDFs, OCR for scanned documents, Multilingual support, Cross-device access

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Plus Subscription | $14.99 | per month |
| ChatPDF Yearly Plus Plan | $89.99 | per year |


## Frequently asked questions

### Is SpinopelvicMobilityApp free?

SpinopelvicMobilityApp costs $9.99, with no in-app purchases.

### Is ChatPDF free?

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

### Do SpinopelvicMobilityApp or ChatPDF have ads?

ChatPDF shows ads; SpinopelvicMobilityApp does not.

### Which is updated more often, SpinopelvicMobilityApp or ChatPDF?

SpinopelvicMobilityApp ships an update every 10 months, and ChatPDF every 4 days. Most recently, SpinopelvicMobilityApp was updated on October 7, 2026 and ChatPDF on October 16, 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.*