# PDF AI vs InterCal

The clearest difference is review sentiment: PDF AI at 88% against InterCal's 0%. PDF AI also leads on rating (4.8 vs 4.0) and ratings volume (151 vs 2). InterCal's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. PDF AI sells 5 in-app purchases, starting at $7.99 per 7 days. InterCal asks for nothing beyond the download.

PDF AI holds the better App Store score, 4.8 against 4.0. That said, the two scores are not equally well evidenced: PDF AI has 151 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 88% of PDF AI's written reviews are positive against 0% of InterCal's.

PDF AI ships an update every 3 weeks, InterCal every 5 days. The most recent releases landed on October 16, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | PDF AI | InterCal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (151 ratings)](https://appshunter.io/ios/app/pdf-ai-editor-scanner-chat/id6581489325/reviews)** | [4.0 (2 ratings)](https://appshunter.io/ios/app/intercal/id6744541491/reviews) |
| Number of ratings | **151** | 2 |
| Positive reviews | **88.4% of reviews** | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 169 MB | 11 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Yang Yang](https://appshunter.io/developer/1756128958) | [Mohammad Reza Reghabi](https://appshunter.io/developer/1808074291) |

## What reviewers say

### PDF AI

[App page](https://appshunter.io/ios/app/pdf-ai-editor-scanner-chat/id6581489325)

This application offers a comprehensive suite of AI-powered tools for managing PDF documents. Users can edit text and images, generate AI summaries, convert files to various formats, and securely sign documents. It prioritizes speed and privacy with local processing and encryption.

**Highlights:** Edit PDF text and images, AI-powered summaries and highlights, Annotate and collaborate on documents, Fill and e-sign forms, Convert PDFs to Word, Excel, PPT, Images, TXT, Secure offline scanning and organization

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

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly VIP | $7.99 | per 7 days |
| Weekly VIP | $9.99 | per 7 days |
| Weekly VIP | $9.99 | per 7 days |
| Monthly VIP | $14.99 | per month |
| Yearly VIP | $59.99 | per year |


### InterCal

[App page](https://appshunter.io/ios/app/intercal/id6744541491)

Manage your schedule across both Persian (Shamsi) and Gregorian calendars with this beautifully designed app. It offers dual calendar display, event management with notifications, and a customizable interface with widgets. Enjoy offline access and a privacy-focused experience.

**Highlights:** Dual calendar display, Event management with notifications, Customizable themes and dark/light mode, Widget support, Offline access, Holiday tracking

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

**In-app purchases:** none


## Frequently asked questions

### Is PDF AI free?

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

### Is InterCal free?

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

### Which has better reviews, PDF AI or InterCal?

PDF AI is rated higher. PDF AI averages 4.8 out of 5 from 151 ratings, while InterCal averages 4.0 from 2 ratings.

### Do PDF AI or InterCal have ads?

PDF AI shows ads; InterCal does not.

### Which is updated more often, PDF AI or InterCal?

PDF AI ships an update every 3 weeks, and InterCal every 5 days. Most recently, PDF AI was updated on October 16, 2026 and InterCal on October 6, 2026.

---

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