# Sleek Calendar vs PDF Reader

The clearest difference is rating: Sleek Calendar at 4.5 against PDF Reader's 4.0. Sleek Calendar also leads on review sentiment (83% vs 50%) and ratings volume (45 vs 4). PDF Reader's advantage is update cadence (every 4 days vs every 3 weeks) and monetization model (ad-supported vs free with in-app purchases). On price, ads, in-app purchases and iOS requirement there is nothing between them.

Both are free to download. Sleek Calendar sells 2 in-app purchases, starting at $1.99 per month and PDF Reader sells 1 in-app purchase, starting at $19.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Sleek Calendar holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Sleek Calendar has 45 ratings behind it against 4, so its average is the more settled of the two. Written reviews point the same way: 83% of Sleek Calendar's written reviews are positive against 50% of PDF Reader's.

Sleek Calendar ships an update every 3 weeks, PDF Reader every 4 days. The most recent releases landed on October 5, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Sleek Calendar | PDF Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (45 ratings)](https://appshunter.io/ios/app/sleek-calendar/id1139617717/reviews)** | [4.0 (4 ratings)](https://appshunter.io/ios/app/pdf-reader-smart-reader/id6756703231/reviews) |
| Number of ratings | **45** | 4 |
| Positive reviews | **83.3% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 3 weeks | **Every 4 days** |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 78 MB | 85 MB |
| Requires iOS | **15.6** | 16.4 |
| Devices | **iPhone, iPod, Apple Watch** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Thaqib Halwani](https://appshunter.io/developer/410453120) | [truong nguyen xuan](https://appshunter.io/developer/552933291) |

## What reviewers say

### Sleek Calendar

[App page](https://appshunter.io/ios/app/sleek-calendar/id1139617717)

This app offers a clean and intuitive calendar and planner experience. Easily manage personal events with colorful icons, drag-and-drop rescheduling, and automatic event creation from photos. It also includes step tracking and event sharing capabilities.

**Highlights:** Automatic event creation from photos, Daily step goal tracking, Drag and drop event rescheduling and cloning, Colorful event icons, Event sharing with other users, Widgets and Apple Watch support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Sleek Monthly Subscription | $1.99 | per month |
| Annual Subscription | $19.99 | per year |


### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-smart-reader/id6756703231)

This app is a fast and lightweight document viewer for PDF, Word, Excel, and PowerPoint files. It offers smart file management, offline access, and easy sharing, making it ideal for students and professionals. Enjoy a seamless reading experience with features like search, bookmarks, and dark mode.

**Highlights:** All-in-one document viewer (PDF, DOCX, XLSX, PPTX, TXT), Smart file manager, Offline document access, Fast and smooth performance, Search and bookmarking, Dark mode support, Easy document sharing

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription - 1 week | $19.99 | per 7 days |


## Frequently asked questions

### Is Sleek Calendar free?

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

### Is PDF Reader free?

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

### Which has better reviews, Sleek Calendar or PDF Reader?

Sleek Calendar is rated higher. Sleek Calendar averages 4.5 out of 5 from 45 ratings, while PDF Reader averages 4.0 from 4 ratings.

### Do Sleek Calendar or PDF Reader have ads?

Both Sleek Calendar and PDF Reader show ads.

### Which is updated more often, Sleek Calendar or PDF Reader?

Sleek Calendar ships an update every 3 weeks, and PDF Reader every 4 days. Most recently, Sleek Calendar was updated on October 5, 2026 and PDF Reader on October 6, 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.*