# Ghai Chemistry Classes vs AskPDF

The clearest difference is in-app purchases: Ghai Chemistry Classes at none against AskPDF's 6. Ghai Chemistry Classes also leads on iOS requirement (12.0 vs 15). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. AskPDF sells 6 in-app purchases, starting at $7.99 per 7 days. Ghai Chemistry Classes asks for nothing beyond the download.

Ghai Chemistry Classes ships an update every 11 months, AskPDF every 7 months. The most recent releases landed on October 25, 2026 and November 2, 2026 respectively.

## The numbers

| Metric | Ghai Chemistry Classes | AskPDF |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | — | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 11 months | **Every 7 months** |
| Monetization | — | Free with in-app purchases |
| Size | 89 MB | 86 MB |
| Requires iOS | **12.0** | 15 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ginger Webs Pvt. Ltd.](https://appshunter.io/developer/808743814) | [Cihat Akkiraz](https://appshunter.io/developer/1535970770) |

## What reviewers say

### Ghai Chemistry Classes

[App page](https://appshunter.io/ios/app/ghai-chemistry-classes/id1530252379)

**In-app purchases:** none


### AskPDF

[App page](https://appshunter.io/ios/app/askpdf-chat-pdf-ai-summary/id6746080072)

Transform any PDF into an interactive study tool. Ask questions, get AI-powered summaries, create flashcards, and test your knowledge with custom quizzes. Ideal for students and professionals who prefer active learning.

**Highlights:** Chat with PDFs, AI summaries, Flashcard generation, Quiz creation, Section detection, Multi-language support

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

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AskPDF Pro Weekly | $7.99 | per 7 days |
| AskPDF Pro Monthly | $19.99 | per month |
| AskPDF Pro Package 1 | $4.99 | one-time |
| AskPDF Pro Package 2 | $9.99 | one-time |
| AskPDF Pro Package 3 | $24.99 | one-time |
| AskPDF Pro Package 4 | $29.99 | one-time |


## Frequently asked questions

### Is Ghai Chemistry Classes free?

Ghai Chemistry Classes is free to download, with no in-app purchases.

### Is AskPDF free?

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

### Do Ghai Chemistry Classes or AskPDF have ads?

Neither Ghai Chemistry Classes nor AskPDF shows ads.

### Which is updated more often, Ghai Chemistry Classes or AskPDF?

Ghai Chemistry Classes ships an update every 11 months, and AskPDF every 7 months. Most recently, Ghai Chemistry Classes was updated on October 25, 2026 and AskPDF on November 2, 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.*