# Dafaa: High School Lessons — Algerian secondary curriculum > Free Algerian high school physics and chemistry lessons, exercises, and simulations. (iPhone/iPad app by Dahmani Walid.) - Source: https://appshunter.io/ios/app/dafaa-high-school-lessons/id6825998347 (this page in markdown: same URL + `.md`) - Developer: [Dahmani Walid](https://appshunter.io/developer/6825998349) - Category: Education, Reference - Price: Free - Rating: 4.70/5 from 3 App Store ratings - Age rating: 4+ - Requires: iOS 16.4 · 79 MB - Languages: Arabic - Released: 2026-10-29 - Data updated: 2026-11-10 - Monetization: free ## What is Dafaa? Notice: Dafaa is not a government app. It is an independent, private app. It does not represent the Algerian Ministry of National Education or any government entity, and it has no link with them. دَفْعَة: دروس التعليم الثانوي دفعة: دروس التعليم الثانوي Dafaa is a free app for high-school students in Algeria: physics and chemistry lessons, exercises solved step by step up to baccalaureate (BAC) level, and interactive simulations, all in one place. Who is it for? • 1st, 2nd and 3rd year of secondary education. • Streams: experimental sciences, mathematics, technical mathematics, and the common core in science and technology. • For tests, term exams and the baccalaureate. Original content, made by us: Every lesson, explanation, solution and simulation in Dafaa is original content, written by the app's developer (Majal) with a small team of teachers. It follows the Algerian school curriculum taught in public high schools: the same units and the same terms you study in class. The app is in Arabic, like the classes. What you'll find in the app: • Clear physics and chemistry lessons, one part at a time, with a summary for every unit. • Exercises solved step by step, from easiest to hardest, up to BAC level. Try first, then reveal the result and the steps. • Units such as: following a chemical reaction over time, mechanics and Newton's laws, work and kinetic energy, potential energy, conductance… with new units opening through the year. • A lab in your pocket: interactive simulations, even offline. • Lesson questions with their answers. • Unlimited practice: five answers in a day add a day to your streak. • From the magazine to the solution: every exercise in our printed revision magazines has a QR code that opens it in the app. • Practice tests and term exams with their solutions. • A weekly calendar with reminders for tests and sessions. • Live sessions and notifications for every new unit. Subjects: • Available now: physical sciences (physics and chemistry), 1st to 3rd year secondary. • Dafaa will cover every high-school subject; mathematics comes next. Why Dafaa? • 100% free, no ads. • No account needed: type your name, pick your year and stream, and start. • Works offline once a unit is downloaded. Dafaa is an independent app made by Majal. Its content is original. It is not a government app and does not represent any government entity. ## Key features - Step-by-step solved exercises - Interactive simulations - Clear physics and chemistry lessons - Practice tests and term exams - Offline functionality - Weekly calendar with reminders ## Is Dafaa safe? Not enough ratings yet to assess Dafaa. ## Is Dafaa legit? Dafaa: High School Lessons has limited verification signals. The AppsHunter Legitimacy Score for Dafaa is 58 out of 100 points across 7 verification signals from App Store and developer data. ## Frequently asked questions about Dafaa ### What subjects does Dafaa cover? Currently, Dafaa offers physical sciences, including physics and chemistry, for all three years of secondary education. Mathematics is planned to be added next. ### Is Dafaa a government app? No, Dafaa is an independent, private app developed by Majal. It is not affiliated with or representative of the Algerian Ministry of National Education or any government entity. ### Can I use Dafaa offline? Yes, once a unit is downloaded, Dafaa works offline. This includes interactive simulations, allowing for practice anytime, anywhere. ### How does Dafaa help with exam preparation? Dafaa provides exercises solved step-by-step up to the baccalaureate (BAC) level, practice tests, and term exams with solutions. It also offers summaries for every unit to aid revision. ### What is the content like in Dafaa? All lessons, explanations, solutions, and simulations in Dafaa are original content created by the developer and a team of teachers. The material follows the Algerian school curriculum precisely. ### Does Dafaa have ads? No, Dafaa is 100% free and does not contain any advertisements. ### How often is Dafaa updated? The app was last updated on November 10, 2026, with version 1.3.0. New units are opened throughout the year, and live sessions and notifications are provided for new content. ### What devices does Dafaa support? Based on the available data, Dafaa currently supports iPhones. ## Version history (last 5 releases) ### 1.3.0 — 2026-11-10 • Graph reader: read a point to the millimetre, draw the tangent with A and B and check its slope. • New scientific calculator: fractions and powers as in your notebook, physical constants. • Graph plotter: your table of values gives the best-fit curve, or plot an equation. • Phone on its side: the buttons move to a side rail (right or left, in Settings). • Share the app with classmates using our website link. • New content on every launch, and a faster guide. ### 1.2.4 — 2026-11-06 • The unit summary now opens straight as a PDF. • Saving a magazine or summary now explains where to find it (Files › Downloads). • Clearer, simpler equation boxes. • Simulations and lessons open faster, with stability improvements. • The exercise number moved into the statement heading, and the teacher code field stays above the keyboard. ### 1.2.3 — 2026-11-04 • New: take notes in every lesson, exercise, question page and PDF: text, lists, to-dos, gallery pictures and finger drawing. • A "My notes" card on the home screen: all your notes sorted by year and subject, plus general notes. Hold a note to move it or attach it to a lesson or an exercise. • Teacher mode: all three years and every stream, teacher-only notifications, and units that open to teachers before students for review. The teacher code is free. • A new icon with the Algerian flag. • The calculator button is now an icon, and titles no longer overlap the buttons. • Smoother on iPhone, and no more getting stuck loading on a slow connection. ### 1.1.6 — 2026-10-30 • Wider exercise page: the statement and solution use the full screen width. • Small text is now the default; pick "Big" in Settings. • A clearer calculator button. • Fixed pages opening twice on a quick double tap. ### 1.1.5 — 2026-10-29 • Every notification now shows the date and time it was sent. • Simpler notification cards; you only see notifications sent after you installed the app. • Exercise page: clearer question labels (1a, 1b…) and a button to show the solution steps. • Right-to-left layout fixed on iPhone, plus performance improvements. ## Related topics [miage rabat](https://appshunter.io/ios/topics/miage-rabat) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-10.*