Comparison

O'Reilly vs UniversalClass

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

Head to head
About

O'Reilly

Access a vast library of tech books, videos, and courses to build in-demand skills. Stay current with the latest in programming, AI, cloud, and more. Learn on the go with offline downloads and progress syncing.

Highlights
  • Thousands of books, videos, and courses
  • Content on programming, AI, cloud, DevOps, cybersecurity
  • Audiobooks for multitasking
  • Live events and on-demand training
  • Playlists for content organization
  • Offline downloads and progress syncing
  • AI-powered search and overviews
Features
Read full description

Build the skills you need for the job you have—or the one you want. With the O’Reilly app paired with a membership, you’ll get access to thousands of books, videos, and courses trusted by tech practitioners around the world. Whether you’re a developer, data professional, or technology leader, O’Reilly helps you stay ahead in a rapidly evolving industry. Here are just a few ways you can use the O’Reilly app to learn today’s most critical skills: • Explore the latest in programming, AI, cloud, DevOps, and cybersecurity, with content from the people actually putting the technology to work—plus in-depth content on leadership, soft skills, and much more. • Discover best-selling titles and early releases from leading publishers, all in one digital library built for technology professionals. • Listen to thousands of audiobooks to keep the learning going while you multitask. • Watch live events and training sessions, or dive into 5,000+ courses on-demand. • Use playlists to save and organize content you’re exploring, and share them with your friends and coworkers. • Learn on the go, anywhere, with downloadable content and progress syncing across devices. • Quickly find the resources that will help you solve the problems you encounter in your day-to-day work with AI-powered search, plus AI overviews (with citations) to get up to speed on the basics. Powerful tools to support your learning: • Recommendations based on your interests and history • Playlists to organize the content you want to learn • Deep search to find answers fast across 75K+ titles, 3.7K+ audiobooks, 30K+ hours of video, and much more • Highlights and notes to capture key ideas • Adjustable reading settings including font size and night mode • Playback speed controls for faster learning Get started with one of our most popular skills: • AI and machine learning • Software development and programming • Data engineering and data science • Cloud, DevOps, and infrastructure • Cybersecurity • Product management and leadership The O’Reilly app works best with a membership. Learn more at oreilly.com.

About

UniversalClass

Access a wide range of online courses to learn new skills, advance your career, or explore personal interests from your mobile device. Continue lessons on the go with a seamless experience, track your progress, and learn at your own pace.

Highlights
  • Access enrolled courses anywhere
  • Seamless mobile learning experience
  • Course materials and progress tracking
  • Learn at your own pace
  • Professional development courses
  • Personal enrichment courses
Features
Read full description

Take your education anywhere with the UniversalClass app. UniversalClass gives you access to a wide range of online courses designed to help you learn new skills, advance your career, or explore personal interests—all from your iPhone or iPad. With the UniversalClass app, you can: - Access your enrolled courses anytime, anywhere - Continue lessons on the go with a seamless mobile experience - Stay organized with course materials, progress tracking, and updates - Learn at your own pace, whether you're at home or on the move From professional development to personal enrichment, UniversalClass makes it easy to keep learning wherever life takes you. Note: A UniversalClass account is required to access course content.

Screenshots

O'Reilly4 screens
UniversalClass4 screens

Verdict

The call

The clearest difference is rating: O'Reilly at 4.7 against UniversalClass's 3.2. O'Reilly also leads on review sentiment (46% vs 20%) and ratings volume (34K vs 13). UniversalClass's advantage is iOS requirement (15.0 vs 18.5). On price, update cadence, ads and in-app purchases 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.

ReceptionRating · Positive reviews · Number of ratings

O'Reilly holds the better App Store score, 4.7 against 3.2. That said, the two scores are not equally well evidenced: O'Reilly has 34K ratings behind it against 13, so its average is the more settled of the two. Written reviews point the same way: 46% of O'Reilly's written reviews are positive against 20% of UniversalClass's.

UpkeepUpdate frequency

O'Reilly ships an update fortnightly, UniversalClass every 3 weeks. The most recent releases landed on November 3, 2026 and October 25, 2026 respectively.

Scorecard4 real differences · 6 level
O'Reilly versus UniversalClass: the parameters behind the verdict, then further details
ParameterO'ReillyUniversalClass
PriceFreeFree
Rating4.7 (34K ratings) — better3.2 (13 ratings)
Positive reviews46.5% of reviews — better20.0% of reviews
Number of ratings34K — better13
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS18.515.0 — better
Further details — not scored
Size65 MB637 MB
Age rating4+17+
DeveloperO'Reilly Media, Inc.Universal Class, Inc.

Customer experience

O'Reilly

All ratings33,922 ratings
Positive94.2%
Neutral2.5%
Negative3.3%
Written reviews355 reviews
Positive46.5%
Neutral13.8%
Negative39.7%

UniversalClass

All ratings13 ratings
Positive46.2%
Neutral7.7%
Negative46.2%
Written reviews5 reviews
Positive20.0%
Neutral0.0%
Negative80.0%

Bugs and requests

O'Reilly

Reported bugs

4 issues
  • Frequent crashes and freezes
  • Unreliable downloads and offline access
  • Login issues and loss of progress
  • Inconsistent behavior across updates

Requested features

4 requests
  • Improved bookmarking and note-taking
  • Customizable text formatting and layout
  • Better search and content discovery
  • Seamless sync across devices

UniversalClass

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

O'Reilly

No in-app purchases

None

UniversalClass

No in-app purchases

Questions

Is O'Reilly free?
O'Reilly is free to download, with no in-app purchases.
Is UniversalClass free?
UniversalClass is free to download, with no in-app purchases.
Which has better reviews, O'Reilly or UniversalClass?
O'Reilly is rated higher. O'Reilly averages 4.7 out of 5 from 34K ratings, while UniversalClass averages 3.2 from 13 ratings.
Do O'Reilly or UniversalClass have ads?
Neither O'Reilly nor UniversalClass shows ads.
Which is updated more often, O'Reilly or UniversalClass?
O'Reilly ships an update fortnightly, and UniversalClass every 3 weeks. Most recently, O'Reilly was updated on November 3, 2026 and UniversalClass on October 25, 2026.

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