# HLL Pdf Reader vs Key memos

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.

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.

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.

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.

## The numbers

| Metric | HLL Pdf Reader | Key memos |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Rating | [5.0 (1 ratings)](https://appshunter.io/ios/app/hll-pdf-reader/id1083359852/reviews) | [5.0 (1 ratings)](https://appshunter.io/ios/app/key-memos/id1596886075/reviews) |
| Number of ratings | 1 | 1 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Every 6 months** |
| Monetization | **Free** | Paid |
| Size | 15 MB | 2 MB |
| Requires iOS | **15.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [hades lade lam](https://appshunter.io/developer/1066160322) | [Evgeny Turchaninov](https://appshunter.io/developer/517592625) |

## What reviewers say

### HLL Pdf Reader

[App page](https://appshunter.io/ios/app/hll-pdf-reader/id1083359852)

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:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### Key memos

[App page](https://appshunter.io/ios/app/key-memos/id1596886075)

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:** macOS Compatibility

**In-app purchases:** none


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