# Days Left vs PDF Reader

The clearest difference is in-app purchases: PDF Reader at none against Days Left's 1. PDF Reader also leads on review sentiment (100% vs 78%). Days Left's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 114 months). On price and device support there is nothing between them.

Both are free to download. Days Left sells 1 one-off in-app purchase. PDF Reader asks for nothing beyond the download.

Days Left ships an update every 3 weeks, PDF Reader every 114 months. The most recent releases landed on October 26, 2026 and October 29, 2026 respectively.

## The numbers

| Metric | Days Left | PDF Reader |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (16 ratings)](https://appshunter.io/ios/app/days-left-countdown-to-event-date/id820954391/reviews)** | — |
| Number of ratings | **16** | — |
| Positive reviews | 77.8% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | **Every 3 weeks** | Every 114 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 13 MB | 8 MB |
| Requires iOS | **6.0** | 14.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Istiak Islam](https://appshunter.io/developer/764322538) | [Aishvarya Sadasivam](https://appshunter.io/developer/1062048241) |

## What reviewers say

### Days Left

[App page](https://appshunter.io/ios/app/days-left-countdown-to-event-date/id820954391)

This app helps you track upcoming events by counting down the days until they occur. It offers smart background customization based on event type and provides timely reminders. Share your countdowns with friends on social media.

**Highlights:** Countdown to event dates, Smart event type detection, Customized event backgrounds, Event reminders, Social media sharing, Unlimited event saving

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Purchase to remove ads | $0.99 | one-time |


### PDF Reader

[App page](https://appshunter.io/ios/app/pdf-reader-for-books/id1084659168)

Easily open and view all your important files, including PDFs, documents, spreadsheets, presentations, and images, in one straightforward app. Designed for simplicity and speed, it's your reliable companion for accessing digital materials and eBooks quickly with a clean interface.

**Highlights:** Open PDFs and eBooks, View Office files (.doc, .xls, .ppt), Access image files (.png, .jpg), Open .html web pages, Clean and clear interface, Fast and reliable file viewing

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

**In-app purchases:** none


## Frequently asked questions

### Is Days Left free?

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

### Is PDF Reader free?

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

### Do Days Left or PDF Reader have ads?

PDF Reader shows ads; Days Left does not.

### Which is updated more often, Days Left or PDF Reader?

Days Left ships an update every 3 weeks, and PDF Reader every 114 months. Most recently, Days Left was updated on October 26, 2026 and PDF Reader on October 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.*