Comparison

Days Left vs PDF Reader

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Days Left

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
Read full description

Days Left is a gorgeous event management app. It displays the number of days left from today until your event date. Days Left is simple and easy to use. Just select a date, type an event name and days left will keep counting the number of days left. It will remind you the day before and on the day your event is due. Days Left displays the events on a beautiful transparent table. Days Left is smart. It can detect your event type and place a gorgeous background just right for your event. You can share events on Facebook and Twitter. Days Left is very useful as a reminder for all sorts of events (such as Birthdays, Holidays, Parties, Functions, Meetings etc. It can even track how many days since you quit smoking.) And best of all Days Left is FREE! Features: • Can save unlimited number of events. • Days Left smartly detect your event type and displays customized background to match your event. • You can share your event on Facebook and Twitter. • Days Left can show remaining days in number of “Days” or in number of “Years Months and Days”. • Days Left will notify when your event is due. Which means you will never miss an event. • Very easy to use with clear on screen instructions.

About

PDF Reader

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
Read full description

PDF Reader-for Books is the straightforward and essential app for easily opening and viewing all your important files on your iPhone or iPad. Say goodbye to multiple apps—now you can access PDFs, documents, spreadsheets, presentations, and images all in one place. Designed for simplicity and speed, this app is your reliable companion for viewing all digital materials, including your favorite eBooks. Just tap to open your files and view them quickly with a clean, clear interface. Effortless File Access: • PDFs n eBooks: Open and read all your PDF documents and digital books. • Office Files: View popular Microsoft Office file types: .doc, .xls, and .ppt. • Images n Web: Easily open image files like .png and .jpg, plus .html web pages. Simple, Fast, and Reliable: PDF Reader-for Books is designed for maximum ease of use. No complicated features, just what you need to view your files quickly and reliably. Download today and simplify how you view all your documents and files!

Screenshots

Days Left4 screens
PDF Reader4 screens

Verdict

The call

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.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

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

UpkeepUpdate frequency

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.

Scorecard6 real differences · 4 level
Days Left versus PDF Reader: the parameters behind the verdict, then further details
ParameterDays LeftPDF Reader
PriceFreeFree
Rating4.1 (16 ratings) — better—
Positive reviews77.8% of reviews100.0% of reviews — better
Number of ratings16 — better—
Update frequencyEvery 3 weeks — betterEvery 114 months
AdsNo — betterYes
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesAd-supported — better
DevicesiPhone, iPodiPhone, iPad, iPod — better
Requires iOS6.0 — better14.0
Further details — not scored
Size13 MB8 MB
Age rating4+4+
DeveloperIstiak IslamAishvarya Sadasivam

Customer experience

Days Left

All ratings16 ratings
Positive81.3%
Neutral6.3%
Negative12.5%
Written reviews27 reviews
Positive77.8%
Neutral7.4%
Negative14.8%

PDF Reader

Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

1 purchases

Days Left

One-time1
  • Purchase to remove ads$0.99
None

PDF Reader

No in-app purchases

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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