# AI Chat vs PDFLock

The clearest difference is in-app purchases: PDFLock at none against AI Chat's 8. PDFLock also leads on iOS requirement (13.0 vs 15.4). On price, ads and device support there is nothing between them.

Both are free to download. AI Chat sells 8 in-app purchases, starting at $5.99 per 7 days. PDFLock asks for nothing beyond the download.

## The numbers

| Metric | AI Chat | PDFLock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.7 (126 ratings)](https://appshunter.io/ios/app/ai-chat-nera-smart-assistant/id1667468949/reviews)** | — |
| Number of ratings | **126** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | Weekly | — |
| Monetization | Free with in-app purchases | — |
| Size | 40 MB | 50 MB |
| Requires iOS | 15.4 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 12+ | 4+ |
| Developer | [AirShape](https://appshunter.io/developer/1638120760) | [MSAPPS SERVICOS DE INFORMATICA E MARKETING LTDA](https://appshunter.io/developer/1806111583) |

## What reviewers say

### AI Chat

[App page](https://appshunter.io/ios/app/ai-chat-nera-smart-assistant/id1667468949)

This AI-powered chatbot provides accurate and comprehensive answers to complex questions. It clarifies details, helps with writing, and can solve math problems, acting as a creative assistant for both personal and professional use. Enjoy an ad-free, intuitive experience for quick information retrieval.

**Highlights:** AI-powered question answering, Writing and text improvement, Math problem solving, Organized and comprehensive responses, Ad-free experience, Search history log

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Nera AI Unlimited Access | $5.99 | per 7 days |
| Unlimited Monthly Subscription | $19.99 | per month |
| Unlimited AI Chat | $29.99 | per month |
| Nera AI Unlimited Access | $44.99 | per year |
| Unlimited Annual Subscription | $89.99 | per year |
| Unlimited AI Chat | $129.99 | per year |
| 20 AI Chat Messages | $9.99 | one-time |
| 100 AI Chat Messages | $19.99 | one-time |


### PDFLock

[App page](https://appshunter.io/ios/app/pdflock-senha-e-editor-pdf/id6783845658)

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

**In-app purchases:** none


## Frequently asked questions

### Is AI Chat free?

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

### Is PDFLock free?

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

### Do AI Chat or PDFLock have ads?

Both AI Chat and PDFLock show ads.

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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.*