# Unshared PDF Reader vs Sleep Time

The clearest difference is review sentiment: Sleep Time at 100% against Unshared PDF Reader's 0%. Unshared PDF Reader's advantage is update cadence (every 3 days vs every 3 weeks) and iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Unshared PDF Reader ships an update every 3 days, Sleep Time every 3 weeks. The most recent releases landed on October 17, 2026 and October 20, 2026 respectively.

## The numbers

| Metric | Unshared PDF Reader | Sleep Time |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (7 ratings)](https://appshunter.io/ios/app/sleep-time-alarm-calculator/id6502281177/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | 0.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Monetization | Free | Free |
| Size | 1 MB | 73 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [迪 吴](https://appshunter.io/developer/895299436) | [Oleg Filimonov](https://appshunter.io/developer/1769783383) |

## What reviewers say

### Unshared PDF Reader

[App page](https://appshunter.io/ios/app/unshared-pdf-reader/id1543661709)

This free document reader allows you to easily open and view authorized PDF and .updf files. It is specifically designed for documents created by the PDF Unshare program.

**Highlights:** View PDF files, View .updf files, Supports authorized documents, Free to use, Designed for PDF Unshare program

**Features:** macOS Compatibility

**In-app purchases:** none


### Sleep Time

[App page](https://appshunter.io/ios/app/sleep-time-alarm-calculator/id6502281177)

This utility helps you wake up feeling rested by calculating ideal sleep and wake-up times. It considers the time it takes to fall asleep and provides timely notifications. Enjoy a more efficient sleep schedule with its user-friendly interface.

**Highlights:** Optimal sleep/wake time calculation, Bedtime and wake-up notifications, Includes time to fall asleep, User-friendly design, Feedback tab for reports

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

**In-app purchases:** none


## Frequently asked questions

### Is Unshared PDF Reader free?

Unshared PDF Reader is free to download, with no in-app purchases.

### Is Sleep Time free?

Sleep Time is free to download, with no in-app purchases.

### Do Unshared PDF Reader or Sleep Time have ads?

Neither Unshared PDF Reader nor Sleep Time shows ads.

### Which is updated more often, Unshared PDF Reader or Sleep Time?

Unshared PDF Reader ships an update every 3 days, and Sleep Time every 3 weeks. Most recently, Unshared PDF Reader was updated on October 17, 2026 and Sleep Time on October 20, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*