Train for CDS I 2027
Made by someone who walked this road. Free to practise. No ads.
Parth is a quiet, fast practice app for the Combined Defence Services exam: past CDS papers from UPSC, worked out clearly, plus original mocks with the real timing and negative marking. It works offline on any phone.
Beta opens for CDS I 2027 aspirants. We'll email you only about the beta and the launch.
For CDS aspirants · App available in English and Hindi
151 days
Exam on 11 April 2027, as per UPSC's annual calendar. Dates can change; always check upsc.gov.in. UPSC exam calendar
CDS I 2027 is done. Rest well. CDS II 2027 is next.
Your kit
Past CDS papers from UPSC, by year and by topic, each with the answer and our explanation.
Original practice questions, not past papers, with real timing and real negative marking, so exam day feels familiar.
Vocabulary, idioms and GK in short daily sets. Mistakes are allowed here; that is how you learn.
Fast on low-end Android, works offline, and never shows an ad.
Built by a former CDS aspirant. Past-paper questions from UPSC. Answers follow UPSC's key where one is published; where none exists, the answer is our own, and it's labelled.
Inside the app
Real screens from the test build, on a mid-range Android phone. Questions in these screens are samples.
Drill
A real question from UPSC's CDS (I) 2024 General Knowledge paper, Series A, question 86. Pick an answer.
What does BW stand for as per the Koeppen climate classification?
In Koeppen's scheme the letter B stands for dry climates, and the second letter W stands for desert (from the German word for desert), while S stands for steppe. So BW is the desert climate. Tundra is marked ET, and the mesothermal (warm temperate) climates come under the letter C.
Explanation: © Rohan Singh
Source: Union Public Service Commission (UPSC), CDS (I) 2024 General Knowledge, Series A, Q86. Question © UPSC. View the official paper on upsc.gov.in ↗
Plans
Lite is free for good. Premium goes deeper for those who want it. Nothing in Lite is locked or greyed out.
Free, no ads
Two one-time options. No auto-renewal.
Returning aspirants: ₹349 for the next cycle's pass.
Well-being check-ins and the Tele-MANAS helpline (14416) are in every plan, always.
Report in
We'll email you only about the beta and the launch.
Briefing
No. Parth is an independent practice service. It is not affiliated with or endorsed by UPSC, the Ministry of Defence or the Indian Armed Forces. Official notifications and papers are only on upsc.gov.in.
Yes. Lite is free, has no ads and has no locked items. It includes past CDS papers from UPSC, with our explanations. We will never take a free feature away.
A closed beta opens for CDS I 2027 aspirants. The full app is planned for CDS II 2027. Waitlist members hear first. Beta testers get a Beta Exam Pass for CDS I 2027, until 14 days after the exam.
Yes. The app is available in English and Hindi: you choose the language inside the app. GK and Maths explanations are available in Hindi; the English paper is in English, as in the exam. This website is in English.
Yes. Choose OTA and you get an English and GK mode, with mocks set up the same way.
No, and be careful of anyone who does. We help you practise well. Your effort does the rest.
We use them only to tell you about the beta and launch, and delete them no later than three months after the full launch. You can ask us to delete them sooner, with one email. The privacy notice has the details.