Comparison

HLL Pdf Reader vs Key memos

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

Head to head
About

HLL Pdf Reader

This app offers a streamlined PDF reading experience with an iBooks-inspired interface. It provides features like recent reading history, page cropping for larger content views, and an outline for easy navigation. Zooming is simplified with double-tap gestures.

Highlights
  • iBooks-like design
  • Reading history
  • Page cropping
  • Document outline
  • Double-tap zoom
  • Automatic fit on rotation
Features
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Universal app - Support for iPhone / iPad iBooks-like design - Support your reading experience with simple User Interface. Recently read books - Show your reading histories. Therefore you can find books that you read recently. Cropping - Crop page merging to show contents bigger automatically. Outline - Show current document structure so that you can see your position and move around easily. No more pinch in/out. - Zoom in/out with double tap. - Fit document to device size automatically when rotating.

About

Key memos

This app helps you store hints for your passwords and login information for various online services. It allows for organized storage in folders and offers optional PIN code protection and iCloud synchronization.

Highlights
  • Store password hints and login details
  • Organize with folders
  • Optional PIN code protection
  • iCloud synchronization
  • Hide cards and folders
  • Export and restore data
Features
Read full description

This app is for those who still remember their passwords, but there are so many of them that sometimes you need hints to remember. And for those who keep their passwords in Notes, then this app will definitely be the best place to store them. There are no subscriptions or in-app purchases. IT IS IMPORTANT TO REMEMBER: The information inside is NOT encrypted. Write down only the hints that you understand here! CARDS The application stores cards with password hints and other information for logging into various online services. In each card, you can write: - name, - a note, - url or website address, - login or login prompt, - password hint opportunities: + Create new folders without restrictions + Add cards to folders without restrictions + The ability to use without a PIN code + You can still add a PIN code and expand the functionality of the application. + Synchronization via iCloud - Your data will not be lost when you change your device (you can disable this in the settings) + You can hide both folders with cards and each card separately from prying eyes. + If you do not use iCloud, it is possible to output all the application data in a separate file, save it and then restore this data from the file. This file is not readable by normal means.

Screenshots

HLL Pdf Reader1 screens
Key memos4 screens

Verdict

The call

The clearest difference is price: HLL Pdf Reader at Free against Key memos's $0.99. HLL Pdf Reader also leads on iOS requirement (15.0 vs 17.0). On rating, ratings volume, update cadence and ads 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

HLL Pdf Reader is free to download; Key memos costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for HLL Pdf Reader against 5.0 for Key memos. Both are backed by a comparable volume of ratings — 1 and 1 respectively.

UpkeepUpdate frequency

HLL Pdf Reader ships an update every 9 months, Key memos every 6 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard3 real differences · 6 level
HLL Pdf Reader versus Key memos: the parameters behind the verdict, then further details
ParameterHLL Pdf ReaderKey memos
PriceFree — better$0.99
Rating5.0 (1 ratings)5.0 (1 ratings)
Number of ratings11
Update frequencyEvery 9 monthsEvery 6 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationFree — betterPaid
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size15 MB2 MB
Age rating4+4+
Developerhades lade lamEvgeny Turchaninov

Customer experience

HLL Pdf Reader

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Key memos

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

HLL Pdf Reader

No in-app purchases

None

Key memos

No in-app purchases

Questions

Is HLL Pdf Reader free?
HLL Pdf Reader is free to download, with no in-app purchases.
Is Key memos free?
Key memos costs $0.99, with no in-app purchases.
Which has better reviews, HLL Pdf Reader or Key memos?
HLL Pdf Reader and Key memos are both rated 5.0 out of 5 on the App Store, from 1 and 1 ratings respectively.
Do HLL Pdf Reader or Key memos have ads?
Neither HLL Pdf Reader nor Key memos shows ads.
Which is updated more often, HLL Pdf Reader or Key memos?
HLL Pdf Reader ships an update every 9 months, and Key memos every 6 months. Most recently, HLL Pdf Reader was updated on November 2, 2026 and Key memos on November 3, 2026.

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