# STATS™ Mobile vs ChatPDF

The clearest difference is in-app purchases: STATS™ Mobile at none against ChatPDF's 2. STATS™ Mobile also leads on ads (none vs shown) and rating (5.0 vs 4.6). ChatPDF's advantage is update cadence (every 4 days vs every 6 weeks) and ratings volume (94 vs 1). On price, device support and iOS requirement there is nothing between them.

Both are free to download. ChatPDF sells 2 in-app purchases, starting at $14.99 per month. STATS™ Mobile asks for nothing beyond the download.

STATS™ Mobile holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: ChatPDF has 94 ratings behind it against 1, so its average is the more settled of the two.

STATS™ Mobile ships an update every 6 weeks, ChatPDF every 4 days. The most recent releases landed on October 29, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | STATS™ Mobile | ChatPDF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/stats-mobile/id1513218922/reviews)** | [4.6 (94 ratings)](https://appshunter.io/ios/app/chatpdf-chat-pdf-ai/id6742454061/reviews) |
| Number of ratings | 1 | **94** |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 6 weeks | **Every 4 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 30 MB | 41 MB |
| Requires iOS | **15.1** | 15.6 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Decision Analyst](https://appshunter.io/developer/1250212248) | [ChatPDF GmbH](https://appshunter.io/developer/1711436087) |

## What reviewers say

### STATS™ Mobile

[App page](https://appshunter.io/ios/app/stats-mobile/id1513218922)

This application offers essential statistical calculators for marketing researchers and students. It provides tools for summary statistics, sample size determination, standard error calculations, and significance testing, with clear explanations of formulas.

**Highlights:** Summary statistics for CSV files, Sample size determination, Standard error of proportion, Significance testing, Formula explanations

**Features:** macOS Compatibility, 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 STATS™ Mobile free?

STATS™ Mobile is free to download, with no in-app purchases.

### Is ChatPDF free?

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

### Which has better reviews, STATS™ Mobile or ChatPDF?

STATS™ Mobile is rated higher. STATS™ Mobile averages 5.0 out of 5 from 1 ratings, while ChatPDF averages 4.6 from 94 ratings.

### Do STATS™ Mobile or ChatPDF have ads?

ChatPDF shows ads; STATS™ Mobile does not.

### Which is updated more often, STATS™ Mobile or ChatPDF?

STATS™ Mobile ships an update every 6 weeks, and ChatPDF every 4 days. Most recently, STATS™ Mobile was updated on October 29, 2026 and ChatPDF on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*