# StudyPDF vs UpDraft Rx

The clearest difference is update cadence: UpDraft Rx at every 3 days against StudyPDF's every 9 days. UpDraft Rx also leads on iOS requirement (15.0 vs 17.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. StudyPDF sells 5 in-app purchases, starting at $5.99 per 7 days and UpDraft Rx sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

StudyPDF ships an update every 9 days, UpDraft Rx every 3 days. The most recent releases landed on October 28, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | StudyPDF | UpDraft Rx |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 9 days | **Every 3 days** |
| Monetization | Freemium | — |
| Size | 41 MB | 316 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Luis Henrich-Bandis](https://appshunter.io/developer/6786604816) | [Dallas Scott](https://appshunter.io/developer/1798285637) |

## What reviewers say

### StudyPDF

[App page](https://appshunter.io/ios/app/studypdf-ai-study-and-exam-prep/id6786604814)

Transform your course materials into personalized study aids. This AI-powered tutor generates flashcards, quizzes, and summaries from your uploaded notes, slides, or even YouTube lectures. Focus your revision on areas where you need the most improvement, with all information directly linked to its source.

**Highlights:** AI-powered study tutor, Personalized flashcards with spaced repetition, Quizzes and practice exams, Study guides and summaries, Mind maps and cheat sheets, Offline study capabilities, Source citation for all content

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Weekly | $5.99 | per 7 days |
| Pro Monthly | $11.99 | per month |
| Ultra Monthly | $19.99 | per month |
| Pro Yearly | $71.99 | per year |
| Ultra Yearly | $119.99 | per year |


### UpDraft Rx

[App page](https://appshunter.io/ios/app/updraft-rx/id6792164071)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock All Tracks | $19.99 | one-time |


## Frequently asked questions

### Is StudyPDF free?

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

### Is UpDraft Rx free?

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

### Do StudyPDF or UpDraft Rx have ads?

Neither StudyPDF nor UpDraft Rx shows ads.

### Which is updated more often, StudyPDF or UpDraft Rx?

StudyPDF ships an update every 9 days, and UpDraft Rx every 3 days. Most recently, StudyPDF was updated on October 28, 2026 and UpDraft Rx on October 11, 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.*