Comparison

O'Reilly vs CitizenshipPrep

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. • 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

CitizenshipPrep

Features
Read full description

Prepare for the Canadian citizenship knowledge test with a focused study experience that works completely offline. Practice questions by topic, review explanations, and use 20-question mock tests with a 45-minute timer. Your results and topic progress are stored only on your device. Features: - Practice by topic - 20-question timed mock tests - Answer explanations - Review of incorrect answers - Progress statistics by topic - No account required - Works completely offline Citizenship Prep is an independent study app. It is not affiliated with or endorsed by Immigration, Refugees and Citizenship Canada (IRCC) or the Government of Canada. The app does not provide official test questions and does not guarantee a passing result.

Screenshots

O'Reilly4 screens
CitizenshipPrep3 screens

Verdict

The call

O'Reilly and CitizenshipPrep are too close to call on the numbers: across 6 compared parameters — price, update cadence, ads and in-app purchases among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

O'Reilly ships an update fortnightly, CitizenshipPrep every 3 weeks. The most recent releases landed on October 24, 2026 and October 9, 2026 respectively.

ScorecardNo meaningful differences
O'Reilly versus CitizenshipPrep: the parameters behind the verdict, then further details
ParameterO'ReillyCitizenshipPrep
PriceFreeFree
Rating4.7 (34K ratings) — better—
Positive reviews46.0% of reviews—
Number of ratings34K — better—
Update frequencyFortnightly — betterEvery 3 weeks
AdsNoNo
In-app purchasesNoNo
MonetizationSubscription—
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.517.0 — better
Further details — not scored
Size64 MB4 MB
Age rating4+4+
DeveloperO'Reilly Media, Inc.Farnaz Kohankhaki

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

CitizenshipPrep

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

O'Reilly

No in-app purchases

None

CitizenshipPrep

No in-app purchases

Questions

Is O'Reilly free?
O'Reilly is free to download, with no in-app purchases.
Is CitizenshipPrep free?
CitizenshipPrep is free to download, with no in-app purchases.
Do O'Reilly or CitizenshipPrep have ads?
Neither O'Reilly nor CitizenshipPrep shows ads.
Which is updated more often, O'Reilly or CitizenshipPrep?
O'Reilly ships an update fortnightly, and CitizenshipPrep every 3 weeks. Most recently, O'Reilly was updated on October 24, 2026 and CitizenshipPrep on October 9, 2026.

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