Comparison

EVO BUG vs Libby, the library app

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

Head to head
About

EVO BUG

This app brings bugs to life through augmented reality when viewed through a smart device. Interact with 3D animated bugs, learn about them, and engage in fun activities. Requires a special AR book to use.

Highlights
  • Augmented reality bug experiences
  • Interactive 3D bug animations
  • Learn bug facts and sounds
  • Feed and interact with bugs
  • High-quality 3D animation and sound
  • User-friendly interface
Features
Read full description

EVO BUG – 3D AR ALZZAM Co., Ltd. Toys and reference materials ○ What is EVO BUG? - EVO BUG is a magical book in which bugs come to life and move when they are viewed through smart devices. - You will have experiences you’ve never had before with any other books. With the augmented reality technology, you can move bugs with your own hands. In addition, this application offers you the opportunity to have fun and learn while enjoying engaging activities, such as listening to information about bugs, hearing the sounds they make, and feeding them. ○ Features of EVO BUG - High quality 3D animation and sound - Implementation of augmented reality content on all of the cards - High recognition technology and user-oriented UI ○ How to use EVO BUG - You must purchase this augmented reality book and install the EVO BUG app. 1. Go to http://www.alzzam.co.kr/test/evo/bug/testpage.html to download and print the test page. 2. Install the EVO BUG app. 3. Open the EVO BUG app. You can experience marvelous 3D augmented reality when the printed image or image on the screen is viewed through the camera of a smart device. ○ 3D AR Book series 1. EVO DINO 2. EVO ANIMAL 3. EVO OCEAN 4. EVO BIRD 5. EVO FARM ANIMAL 6. EVO HERPTILE 7. EVO BUG ○ 3D AR Coloring book series 1. AREVO DINO 2. AREVO SAFARI 3. AREVO OCEAN 4. AREVO BIRD ○ 3D AR POPUP CARD series 1. 3D POPUP CARD ○ Developer info Tel. +82-70-8886-4858 Fax. +82-53-421-4858 E-mail. alzzam@alzzam.co.kr

About

Libby, the library app

Access millions of free ebooks and audiobooks from your local library. Borrow titles instantly with your library card, download for offline enjoyment, and enjoy a customizable reading and listening experience.

Highlights
  • Borrow ebooks and audiobooks
  • Download for offline access
  • Send ebooks to Kindle
  • Adjust reader settings
  • Customize audio player
  • Create book lists
Currently charting
Read full description

Libby connects you to your local library’s collection of ebooks, audiobooks, magazines, and more. With just your library card, you can instantly read or listen to books on your phone or tablet — for free, thanks to your public library! Browse and borrow everything from timeless classics to the latest New York Times bestsellers, and enjoy your next great read anytime, anywhere. What You Can Do with Libby - Browse your library’s digital catalog of books - Borrow and enjoy ebooks, audiobooks, and magazines - Send ebooks to your Kindle (U.S. libraries only) - Listen to audiobooks through Apple CarPlay - Download titles for offline reading, or stream them to save space - Use tags to create to-be--read lists or organize your favorite titles - Keep your reading position with automatic syncing across all your devices A Beautiful Reading Experience Enjoy a seamless reading experience with Libby’s elegant, easy-to-use ebook reader: - Adjust text size, background color, and book design to fit your preferences - Zoom into magazines, comics, and graphic novels - Define and search for words or phrases instantly - Read and listen to interactive read-alongs with your kids - Add bookmarks, notes, and highlights to personalize your reading An Immersive Audiobook Player Libby’s audiobook player makes listening effortless and enjoyable: - Slow down or speed up playback (0.6x to 3.0x) - Set a sleep timer for nighttime listening - Swipe easily to skip forward or backward - Add bookmarks, notes, and highlights as you listen Read Anywhere, Anytime Libby is designed for everyone, including kids, teens, and adults. Whether you’re exploring new stories, catching up on bestsellers, or revisiting your favorite books, Libby keeps reading simple, fun, and accessible. Built by OverDrive, Libby proudly supports public libraries and the joy of reading for all. Download Libby today and turn your device into your personal library.

Screenshots

EVO BUG4 screens
Libby, the library app4 screens

Verdict

The call

The clearest difference is review sentiment: Libby, the library app at 84% against EVO BUG's 0%. Libby, the library app also leads on chart position (#2 vs unranked). EVO BUG's advantage is update cadence (every 11 days vs monthly) and iOS requirement (5.1.1 vs 13.0). On price, ads, in-app purchases and monetization model 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. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

EVO BUG ships an update every 11 days, Libby, the library app monthly. The most recent releases landed on June 1, 2026 and October 1, 2026 respectively.

Scorecard4 real differences · 7 level
EVO BUG versus Libby, the library app: the parameters behind the verdict, then further details
ParameterEVO BUGLibby, the library app
PriceFreeFree
Rating—4.9 (4.5M ratings) — better
Positive reviews0.0% of reviews83.8% of reviews — better
Number of ratings—4.5M — better
Update frequencyEvery 11 days — betterMonthly
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
Best chart rank—#2 — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS5.1.1 — better13.0
Further details — not scored
Size277 MB5 MB
Age rating4+9+
DeveloperAlzzam Education Corp.OverDrive, Inc.

Customer experience

EVO BUG

Written reviews3 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Libby, the library app

All ratings4,537,350 ratings
Positive97.3%
Neutral1.4%
Negative1.3%
Written reviews9,507 reviews
Positive83.8%
Neutral4.9%
Negative11.3%

Bugs and requests

EVO BUG

Not enough reviews yet to summarise bugs or requests.

Libby, the library app

Reported bugs

5 issues
  • Frequent app crashes and freezes
  • Issues with downloading and syncing content
  • Unreliable playback controls for audiobooks
  • Inconsistent behavior when placing holds
  • Disappearing reading history and bookmarks

Requested features

6 requests
  • Ability to search across multiple libraries
  • Custom reading/listening speed controls
  • Improved recommendation and discovery tools
  • Option to purchase unavailable titles
  • Customizable reading experience (fonts, themes)
Show 1 more
  • Integration with other e-book/audiobook services

In-app purchases

None

EVO BUG

No in-app purchases

None

Libby, the library app

No in-app purchases

Questions

Is EVO BUG free?
EVO BUG is free to download, with no in-app purchases.
Is Libby, the library app free?
Libby, the library app is free to download, with no in-app purchases.
Do EVO BUG or Libby, the library app have ads?
Neither EVO BUG nor Libby, the library app shows ads.
Which is updated more often, EVO BUG or Libby, the library app?
EVO BUG ships an update every 11 days, and Libby, the library app monthly. Most recently, EVO BUG was updated on June 1, 2026 and Libby, the library app on October 1, 2026.

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