# StudyPDF vs Sitday

StudyPDF and Sitday are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

## The numbers

| Metric | StudyPDF | Sitday |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | Freemium | — |
| Size | 40 MB | 3 MB |
| Requires iOS | 17.0 | 17.0 |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Luis Henrich-Bandis](https://appshunter.io/developer/6786604816) | [Pragmatiq](https://appshunter.io/developer/1620893651) |

## 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 |


### Sitday

[App page](https://appshunter.io/ios/app/sitday-exam-countdown/id6813721896)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sitday Plus | $4.99 | one-time |


## Frequently asked questions

### Is StudyPDF free?

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

### Is Sitday free?

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

### Do StudyPDF or Sitday have ads?

Neither StudyPDF nor Sitday shows 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.*