Comparison

O'Reilly vs LeetCode

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 expert-led books, videos, and courses on business and technology trends. Learn online or offline, sync progress across devices, and personalize your reading experience. Discover and organize content with playlists for easy access.

Highlights
  • Offline access to books, videos, and courses
  • Cross-device progress syncing
  • Content discovery and playlist creation
  • Personalized text display and night mode
  • Search across all learning materials
  • External keyboard support
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. • Read best-selling books and early releases from leading publishers. O’Reilly has the largest collection of titles and is the exclusive digital home for all O’Reilly and Pearson tech books. • 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

LeetCode

Practice coding challenges and prepare for technical interviews on the go. Discover company-specific questions, manage your practice lists, and track your progress. Stay updated with contests and daily quests to improve your skills.

Highlights
  • Search and discover company questions
  • Practice coding challenges
  • Manage practice lists
  • Track personal progress
  • Contest registration and calendar sync
  • Daily challenges and quests
Features
Read full description

One LeetCode a day keeps your reasoning in play. Introducing LeetCode for iOS and iPadOS. Enjoy LeetCoding right at your fingertips — jump in for quick practice, browse your collections, and stay on top of important events and progress. With LeetCode in the palm of your hand, you can easily: • Search and discover the latest company questions. • View and quickly practice your favorite challenges right in the palm of your hand. • Manage your lists or add to your wishlist to practice later. • Keep track of your personal progress with a rich profile view and widgets. • Stay notified and keep your streak alive — level up with new challenges and quests every day. • Register for contests and sync them to your calendar. Live Activities keep you updated on contest progress — so you never miss a moment. • And more content and features coming every month… Terms of Services: https://leetcode.com/terms/ Privacy Policy: https://leetcode.com/privacy/

Screenshots

O'Reilly4 screens
LeetCode4 screens

Verdict

The call

The clearest difference is in-app purchases: O'Reilly at none against LeetCode's 2. O'Reilly also leads on ratings volume (34K vs 611). LeetCode's advantage is iOS requirement (16.0 vs 18.5). On price, rating, review sentiment and update cadence 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. LeetCode sells 2 in-app purchases, starting at $35.00 per month. O'Reilly asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.7 for O'Reilly against 4.8 for LeetCode. That said, the two scores are not equally well evidenced: O'Reilly has 34K ratings behind it against 611, so its average is the more settled of the two. Written reviews are what separate them: 46% of O'Reilly's written reviews are positive against 44% of LeetCode's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. Both last shipped on October 6, 2026.

Scorecard4 real differences · 6 level
O'Reilly versus LeetCode: the parameters behind the verdict, then further details
ParameterO'ReillyLeetCode
PriceFreeFree
Rating4.7 (34K ratings)4.8 (611 ratings) — better
Positive reviews46.3% of reviews — better44.2% of reviews
Number of ratings34K — better611
Update frequencyEvery 2 weeksEvery 2 weeks
AdsNoNo
In-app purchasesNo — betterYes
MonetizationSubscriptionAd-supported — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.516.0 — better
Further details — not scored
Size63 MB110 MB
Age rating4+4+
DeveloperO'Reilly Media, Inc.LeetCode

Customer experience

O'Reilly

All ratings33,870 ratings
Positive94.2%
Neutral2.5%
Negative3.3%
Written reviews352 reviews
Positive46.3%
Neutral13.9%
Negative39.8%

LeetCode

All ratings611 ratings
Positive93.6%
Neutral2.1%
Negative4.3%
Written reviews52 reviews
Positive44.2%
Neutral28.8%
Negative26.9%

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

LeetCode

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

O'Reilly

No in-app purchases

2 purchases

LeetCode

Subscriptions2
  • LeetCode Premium Monthly$35.001 Month
  • LeetCode Premium Yearly$159.001 Year

Questions

Is O'Reilly free?
O'Reilly is free to download, with no in-app purchases.
Is LeetCode free?
LeetCode is free to download, with in-app purchases available.
Which has better reviews, O'Reilly or LeetCode?
LeetCode is rated higher. O'Reilly averages 4.7 out of 5 from 34K ratings, while LeetCode averages 4.8 from 611 ratings.
Do O'Reilly or LeetCode have ads?
Neither O'Reilly nor LeetCode shows ads.
Which is updated more often, O'Reilly or LeetCode?
O'Reilly ships an update every 2 weeks, and LeetCode every 2 weeks. Most recently, O'Reilly was updated on October 6, 2026 and LeetCode on October 6, 2026.

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