Comparison

Qlix vs CS Revision

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

Head to head
About

Qlix

Features
Read full description

Seamlessly create lesson plans, manage your timetable and stay connected across all your devices. Everything you need: - Quick and easy to setup or import lesson plans - View your timetable and set reminders - Flexible access across all your devices - Securely backed up and always available - Free updates with new and exciting features

About

CS Revision

This app provides revision notes, code snippets, and diagrams for International Baccalaureate Computer Science students. It includes practice questions, progress tracking, and a forum for discussion and motivation.

Highlights
  • Revision notes
  • Code snippets and diagrams
  • Progress tracking
  • MCQ and exam-style practice questions
  • Discussion forum
  • Friend motivation features
Features
Read full description

CS Revision helps you revise IB Diploma Computer Science in one focused place: learn a topic, practise it, then review what you got wrong until it sticks. LEARN EVERY TOPIC STEP BY STEP • 27 structured topics across Theme A, Theme B and the course components • Clear explanations, key ideas, worked examples and tables • Code examples in Python or Java, with syntax highlighting. Choose your language once. • Standard Level and Higher Level: HL-only material is labelled and can be hidden • Search, filter and bookmark topics PRACTISE WITH ORIGINAL QUESTIONS • Over 1,100 original practice questions written for this app • Single-answer, multiple-answer, code-output and short-answer questions • Instant feedback with an explanation for every question • Quick practice, topic practice and timed Theme A and Theme B practice sets • Report any answer that looks wrong straight from the question REVIEW AT THE RIGHT TIME • A spaced-review queue brings back questions just before you are likely to forget them • Progress charts, topic mastery and your weakest topics at a glance • A Due Review widget for your Home Screen • Optional daily practice reminders at a time you choose ASK THE QUESTION COACH Ask a follow-up about the lesson or question you are studying. The Question Coach uses Apple Intelligence on your device, so your questions are not sent to the developer or saved. It needs an iPhone or iPad that supports Apple Intelligence, with Apple Intelligence turned on. Responses are generated and can contain mistakes, so check them against the lesson. PRIVATE BY DESIGN • No account or sign-in • Your study profile and progress can sync between your iPhone and iPad through your own private iCloud • No advertising, no tracking and no third-party analytics • Export your progress or reset it at any time FREE AND FULL ACCESS Free: a selection of lessons and practice questions with explanations, up to three due review questions at a time, and one Question Coach conversation. Full Access (one-time in-app purchase): every lesson and question, unlimited practice and review, timed practice sets and unlimited Question Coach conversations. It is a single purchase with no subscription, and you can restore it on your other devices. CS Revision was developed independently from, and is not endorsed by, the International Baccalaureate (IB). International Baccalaureate and IB are registered trademarks of the International Baccalaureate Organization. All lessons and questions are original study material. They are not official IB examination questions or markschemes. Use the app alongside your teacher's guidance and the official course materials from your school. Terms of Use: https://grigor-dochev.github.io/ib-cs-revision-help/terms/

Screenshots

Qlix4 screens
CS Revision3 screens

Verdict

The call

The clearest difference is update cadence: Qlix at every 10 days against CS Revision's every 34 months. Qlix also leads on iOS requirement (15.0 vs 26.0). On price, in-app purchases and device support 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

Qlix ships an update every 10 days, CS Revision every 34 months. The most recent releases landed on October 25, 2026 and November 3, 2026 respectively.

Scorecard2 real differences · 7 level
Qlix versus CS Revision: the parameters behind the verdict, then further details
ParameterQlixCS Revision
PriceFreeFree
Rating—3.0 (1 ratings) — better
Number of ratings—1 — better
Update frequencyEvery 10 days — betterEvery 34 months
Ads—No
In-app purchasesNoNo
Monetization—Free
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better26.0
Further details — not scored
Size5 MB15 MB
Age rating4+4+
DeveloperQlix LimitedGrigor Dochev

In-app purchases

None

Qlix

No in-app purchases

None

CS Revision

No in-app purchases

Questions

Is Qlix free?
Qlix is free to download, with no in-app purchases.
Is CS Revision free?
CS Revision is free to download, with no in-app purchases.
Which is updated more often, Qlix or CS Revision?
Qlix ships an update every 10 days, and CS Revision every 34 months. Most recently, Qlix was updated on October 25, 2026 and CS Revision on November 3, 2026.

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