# pdf vs KERoster

The clearest difference is price: KERoster at $0.49 against pdf's $9.99. KERoster also leads on rating (5.0 vs 4.4) and update cadence (every 5 days vs every 2 weeks). pdf's advantage is ratings volume (27 vs 1) and iOS requirement (16.0 vs 18.0). On review sentiment, ads, in-app purchases and monetization model there is nothing between them.

pdf costs $9.99 and KERoster $0.49 up front. Neither carries in-app purchases, so what you see is what you pay.

KERoster holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: pdf has 27 ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 79% of pdf's written reviews are positive against 83% of KERoster's.

pdf ships an update every 2 weeks, KERoster every 5 days. The most recent releases landed on June 10, 2026 and September 29, 2026 respectively.

## The numbers

| Metric | pdf | KERoster |
| --- | --- | --- |
| Price | $9.99 | **$0.49** |
| Rating | [4.4 (27 ratings)](https://appshunter.io/ios/app/pdf-notes-for-ipad/id417200844/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/keroster/id6741789054/reviews)** |
| Number of ratings | **27** | 1 |
| Positive reviews | 79.2% of reviews | **83.3% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 5 days** |
| Monetization | Paid | Paid |
| Size | 138 MB | 5 MB |
| Requires iOS | **16.0** | 18.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 17+ |
| Developer | [AMuseTec Co., Ltd.](https://appshunter.io/developer/342152781) | [JUNGSUB YOON](https://appshunter.io/developer/1795609759) |

## What reviewers say

### pdf

[App page](https://appshunter.io/ios/app/pdf-notes-for-ipad/id417200844)

Manage and annotate PDF files on your iPad with fast page turning and intuitive finger-writing. Easily import, organize, and share your notes with friends. Offers a seamless reading and editing experience.

**Highlights:** Fast page turning and content scanning, Intuitive finger-writing with zoom-in, Easy PDF import via Dropbox, Email, or iTunes, Organized bookshelves with search, Variety of pens, highlighters, and text notes, Export annotated PDFs via email

**Features:** Vision Pro support

**In-app purchases:** none


### KERoster

[App page](https://appshunter.io/ios/app/keroster/id6741789054)

Easily input and view individual schedules by date or in a monthly calendar format. This app acts as a secondary calendar, displaying schedules as icons and allowing for detailed viewing, editing, and deletion. Additional flight-related functions will be added based on user feedback.

**Highlights:** Intuitive schedule input by date, Calendar view with schedule icons, Monthly calendar overview, Detailed schedule view, Schedule editing and deletion, List view of monthly schedules

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

**In-app purchases:** none


## Frequently asked questions

### Is pdf free?

pdf costs $9.99, with no in-app purchases.

### Is KERoster free?

KERoster costs $0.49, with no in-app purchases.

### Which has better reviews, pdf or KERoster?

KERoster is rated higher. pdf averages 4.4 out of 5 from 27 ratings, while KERoster averages 5.0 from 1 ratings.

### Do pdf or KERoster have ads?

Neither pdf nor KERoster shows ads.

### Which is updated more often, pdf or KERoster?

pdf ships an update every 2 weeks, and KERoster every 5 days. Most recently, pdf was updated on June 10, 2026 and KERoster on September 29, 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.*