Frequently Asked Questions

Wondermayank (real name Mayank) is a student developer from Indore, Madhya Pradesh, India who has been building free educational tools since 2018. He runs the Wondermayank brand and the ThunderStudy ecosystem — 800+ tools, 6+ study platforms, 9 Telegram bots, and 7 YouTube channels, all built solo.

The journey started in 2018 with a YouTube gaming channel. After learning coding in 2024, he began building tools in HTML/CSS/JavaScript. By 2025 the ThunderStudy platform launched and by January 2026 everything went open-source on GitHub.

Wondermayank — the personal/utility hub covering 800+ general tools, design projects, Telegram bots, and content creation.

ThunderStudy — the education-focused brand with CUET, SSC, Banking, JEE-NEET, CLAT, and CAT platforms, all free for Indian competitive exam students.

Yes — 100% free. Every tool, mock test platform, Telegram bot, and AI tool in the ecosystem is completely free with no paywalls, no subscriptions, and no hidden charges. Free forever

You can reach Wondermayank via:

• Telegram bot: @Mindmaster_robot — fastest response
• Email: contact@wondermayank.indevs.in
• Tool request form: Google Form

There are 7 YouTube channels covering different content areas:

• @wondermayank — dev vlogs, tech, life
• @THUNDERSTUDY_OFFICIAL — exam prep, study tips
• @ThundercomedyOfficial — comedy, student life
• @Thunderxgaminglive — gaming, live streams
• @wondermayank_roast — roast content
• @Thundertechnologyofficial — tech tutorials
• @Wondermayank_creators — creator content

Primarily vanilla HTML, CSS, and JavaScript — single-file tools hosted on GitHub Pages. The wider stack includes:

Firebase (Auth + Firestore), Groq API (Llama 3.3 70B), Anthropic Claude API, Vercel serverless functions, Cloudflare DNS, Pollinations AI, Google Apps Script, jsPDF/html2canvas, Chart.js, React, and Telegram Bot API.

All tools are catalogued at wondermayank.github.io — the main hub. You can also find study-specific tools at commercesehoga.github.io and thunderstudy.github.io.

Yes — there are 5 Instagram accounts covering education, comedy, tech, and general content under the Wondermayank and Thunder brands. Started in 2023 to expand the community beyond YouTube.

The primary domain is wondermayank.in. The secondary is wondermayank.indevs.in. Study platforms live on commercesehoga.github.io (100K+ monthly views) and thunderstudy.github.io.

There are 9 active Telegram bots:

• @weather_thunder_robot — real-time weather
• @Quiz_Thunder_bot — quiz with countdown timer
• @Thunder_timer_bot — study timer
• @pikachu_thunder_bot — Thunder AI study assistant
• @Thunder_choose_bot — decision helper
• @Scribd_thunder_robot — Scribd downloader
• @Mindmaster_robot — primary contact bot
• @tiny2_thunder_bot — Groq Llama 3.3 + Pollinations AI
• TeleRemind — smart reminder system

Use the official tool request form: forms.gle/jtdRSiHot2beSZ5Q9. Alternatively, message @Mindmaster_robot on Telegram directly — many tools have been built from community requests!

Formula Story Mode is an AI-powered learning tool at formula.thunderstudy.indevs.in built with the Anthropic Claude API. It turns dry formulas into engaging stories and mnemonics so students actually remember them. Completely free.

The AI CBT Mock Test Maker at aimock.thunderstudy.indevs.in uses Claude (claude-sonnet-4-6) to generate custom CBT mock tests on any topic instantly. Just enter a subject and it creates a full test with questions, options, and answers.

Thunder Mind Map at mindmap.thunderstudy.indevs.in is a Groq-powered (Llama 3.3 70B) mind map generator. Features include multi-file Vercel deployment, a credit system, localStorage map saving, PNG/HTML download with tamper-detection, and preset maps for SSC/CUET/Banking.

SelfCare at selfcare.wondermayank.in covers skin care, hair care, intimate care, mental wellness, body care, and period/hormonal care. It includes an AI routine generator to create personalised routines.

MehndiVault is a Pinterest-style gallery with 654+ mehndi design images across 7 categories. It uses a dynamic database system via mehndi-db.js and is available at wondermayank.github.io/help/Mehendi.

Luna is a comprehensive period tracker — a single-file HTML app with localStorage data, PIN lock, PDF export, and 30+ features. Found under the Wondermayank help tools at wondermayank.github.io/help/period.

ThunderStudy is a free CUET preparation platform built by Wondermayank. It offers chapter-wise CBT mock tests, real-time score analytics, a class rank leaderboard, XP-based gamification, achievement badges, and streak tracking — all without any subscription fee.

ThunderStudy and Commerce Se Hoga cover CBSE, CUET, SSC (CGL/MTS/CHSL), Banking (SBI, IBPS, RBI), CLAT, CAT, NDA, and JEE-NEET across 6+ dedicated platforms with 100K+ monthly views.

Absolutely! ThunderStudy is fully responsive and works on all screen sizes. You can also install it as a PWA (Progressive Web App) on both Android and iOS — it works like a native app with offline support.

Core pages load offline after the first visit thanks to PWA caching. However, live features like leaderboard, score sync, and cloud analytics require an internet connection. Install the PWA for the best offline experience.

Commerce — Accountancy, Business Studies, Economics
Science — Physics, Chemistry, Biology, Mathematics
Humanities — History, Political Science, Geography, Sociology
Languages — English General Test
GAT — Reasoning, Quantitative Aptitude, GK
CS & IP, Physical Education

No separate native app yet. Instead install ThunderStudy directly as a PWA from the browser — it saves to your home screen and works like a native app. Android users see an automatic install prompt; iOS users: Share → Add to Home Screen.

Use the Report a Bug button in the platform's More section, or message @Mindmaster_robot on Telegram directly. Feature suggestions are always welcome!

Yes, 100%. Every feature — mock tests, analytics, leaderboard, badges, downloads — is completely free. No paywalls, no premium tiers. It is a passion project by Wondermayank for the CUET community. Free forever

CUET UG (Common University Entrance Test — Undergraduate) is a national-level entrance exam conducted by NTA for admission to undergraduate programs in central, state, deemed, and private universities across India. It replaced individual university entrance tests for most participating institutions.

+5 for each correct answer  −1 for each wrong answer  0 for unattempted

ThunderStudy's mock tests replicate this exact scheme so your practice score maps directly to your real exam score.

Domain subjects: 50 out of 60 questions. General Test (Section III): 60 out of 75 questions. Language papers: typically 50/50. Always verify the latest pattern from the official NTA notification as it may change each year.

For top central universities (DU, BHU, JNU) a score of 200–250 / 250 is typically competitive for popular programs. Use the Target Score Simulator in ThunderStudy Analytics to calculate how many correct answers you need. Varies by college & cutoff

Students can appear for a maximum of 6 domain subjects + at least 1 language + the General Test. Plan your subjects carefully to maximise your university options.

Section IA — 13 languages (reading, vocabulary, grammar)
Section IB — 19 additional languages
Section II — 27 domain-specific subjects (your stream)
Section III — General Test: GK, Current Affairs, Mental Ability, Logical Reasoning

Yes — CUET deducts −1 mark for every wrong answer. ThunderStudy analytics show your accuracy rate and warn you when guessing is hurting your net score. Use the Question Log to review every wrong answer.

CUET is conducted in online CBT mode at official test centres. ThunderStudy's CBT interface is designed to mimic this exactly so you are already comfortable with the format on exam day.

Go to the Tests tab → select your subject → choose a chapter → tap Start CBT. The CBT interface opens full-screen with a timer, question palette, and mark-for-review functionality.

Mock tests run with a live countdown and simulate exam conditions. Pausing is not supported — just like the real exam. If you close the tab, the test is auto-submitted with your answers so far.

Yes! After every test you get a detailed Question Log with your answer, the correct answer, and the explanation. Filter by Correct / Wrong / Skipped. All past tests are saved in your Results history.

Yes, unlimited retakes! Each attempt is tracked separately so you can see improvement over time. Your Best Score is highlighted on the chapter card.

Your answers are saved locally in your browser as you go. If your connection drops and you reload within the session window, your answers are restored. The timer continues — so reconnect quickly.

Chapter CBTs focus on a single chapter — perfect for targeted revision. Full mock tests cover the entire syllabus in one sitting matching the actual CUET pattern. Use chapter CBTs during preparation, full mocks in the final weeks.

ThunderStudy includes a mix of NTA-pattern original questions and curated questions aligned with NCERT and previous CUET papers. The question bank is continuously reviewed and updated.

Chapter CBTs use scaled time (~1.2 min/question). Full mock tests use the exact CUET time allocation — 45 to 60 minutes depending on section. The countdown turns red in the final 5 minutes to simulate exam pressure.

Score Trend chart, Subject Breakdown donut, Accuracy Rate, Predicted Score, Chapter Heatmap, and Time-per-Question speed analysis. All in the Analytics section of the dashboard.

Based on a weighted average of recent test performances, accuracy, and the CUET +5/−1 scheme. Recent tests carry higher weight so the prediction stays current. Indicative only

Yes! Use Download PDF Report in Analytics to generate a PDF scorecard with performance summary, chapter breakdown, and trend chart. You can also download badge certificates and share them.

Open the Target Score Simulator in Analytics, drag sliders to set your target per subject, and ThunderStudy calculates exactly how many correct answers you need. Gap shown with a colour-coded progress bar.

Yes — when signed in, all test results, scores, streaks, XP, and badges sync via Firebase. Switch between phone and laptop seamlessly.

Yes — the Chapter Heatmap uses colour coding (green = strong, red = needs work). Tap any chapter in the heatmap to jump directly to its practice CBT.

Go to Settings → Data & Privacy → Clear Test History. This is irreversible — your analytics charts will reset.

The Question Log is your post-test review: every question with your answer, the correct answer, explanation, and time spent. Filter by Correct, Wrong, or Skipped. The most powerful revision tool on the platform.

The Leaderboard ranks all users by total XP and average test score. See your global rank, subject-mates ranking, and how far you are from the next rank. Refreshes in real time after every test.

Rank is based on your total XP points earned by completing tests, maintaining streaks, unlocking badges, and achieving milestones. Tie-breaking is done by average score percentage.

Yes! Filter tabs for each subject group — Commerce, Science, Humanities, GAT, and more. There is also a Weekly Rank view showing just the past 7 days.

Yes — the leaderboard shows display names publicly. If you prefer privacy, change your display name to a nickname in Settings → Profile. Your email and personal details are never visible.

The All-Time Leaderboard never resets. The Weekly Leaderboard resets every Monday at midnight. Follow @thunderstudy on Telegram for announcements.

1. Maintain your daily streak — bonus XP multiplies over time
2. Score 80%+ accuracy — high-accuracy tests give bonus XP
3. Unlock badges — each gives a one-time XP bonus
4. Complete all chapters for the subject mastery bonus

XP (Experience Points) — earned by completing CBTs, scoring 100%, maintaining streaks, unlocking badges, and daily login bonuses. XP determines your leaderboard rank and unlocks new profile levels.

First Test, Streak Master (7/30/100 days), Perfect Score, Subject Champ, Speed Demon, Top 10 Leaderboard. Go to Achievements to see the full badge gallery with locked/unlocked status.

Consecutive days you have completed at least one CBT. The longer your streak, the higher your XP multiplier. Streaks reset to 0 if you miss a day — so keep studying daily!

Unfortunately yes — streaks require daily activity. ThunderStudy sends a daily reminder notification to help you remember. Streak freeze feature is planned for a future update.

Yes! Tap any earned badge → Download Certificate. You get a beautifully designed PNG/PDF certificate. Share it on Instagram or WhatsApp — tag @wondermayank to get featured!

Yes. Your XP, badges, and profile progress are permanently saved to your account. Only the weekly leaderboard resets. Your achievements are yours forever.

Levels: Beginner → Explorer → Scholar → Expert → Champion → Legend. Each unlocks a new profile frame, title, and bonus features. Progress bar shown on your Home dashboard Profile card.

Go to Settings → Notifications → Daily Study Reminder and toggle on. Set a custom reminder time (e.g. 8 PM). Sent as a browser push notification or app notification if PWA is installed.

You can take some tests as a guest, but a free account is strongly recommended — it unlocks cloud sync, the leaderboard, XP, badges, notifications, and full analytics. Sign up with Google (one tap) or email/password.

Tap Sign In on the home page or sidebar. Sign in with Google (one-tap, recommended) or email + password. Secured by Firebase Authentication.

Go to Settings → Profile → Edit Profile. Change your display name and choose from built-in avatars or upload your own. Changes reflect on the leaderboard instantly.

Tap the sun/moon icon in the top bar, or go to Settings → Appearance → Theme. Choose Light, Dark, or System. Preference is saved to your account.

Go to Settings → My Subjects. Add or remove domain subjects that appear in your Tests tab and Analytics. Personalises your dashboard to show only your CUET subjects.

Yes. ThunderStudy uses Firebase (Google) for secure auth and data storage. Your email is never visible to other users. No personal data is sold or shared. Only display name and public XP appear on the leaderboard.

Go to Settings → Data & Privacy → Delete Account. Permanently removes all your data — scores, XP, badges, streaks. This action is irreversible.

On the sign-in screen tap Forgot Password and enter your email. You will receive a reset link from Firebase. If you signed up with Google, just sign in with Google again. Check spam if the email doesn't arrive.

1. Hard refresh — Ctrl+Shift+R (Windows) / Cmd+Shift+R (Mac)
2. Clear browser cache for the site
3. Switch networks (mobile data vs Wi-Fi)
4. Update your browser
5. Try incognito mode to rule out extension conflicts

Score saving requires being signed in, an active internet connection when the test ends, and cookies/Firebase not blocked. If offline, the score is saved locally and syncs when you come back online.

Charts use Chart.js loaded from a CDN. If a content blocker or firewall blocks it, try: 1) Disable ad-blocker or allow cdn.jsdelivr.net. 2) Ensure JavaScript is enabled. Charts also need at least 1 completed test to render.

iOS push notifications for web apps require: 1) ThunderStudy installed as a PWA. 2) iOS 16.4+. 3) Notifications allowed in iOS Settings → ThunderStudy → Notifications. Safari browser tabs don't support push notifications on iOS.

Best Chrome (Android & Desktop), Edge (Desktop)
Good Firefox (Desktop), Samsung Internet (Android)
Limited Safari (iOS) — PWA features require iOS 16.4+

Usually caused by browser extensions (like Dark Reader) overriding the site's CSS. Disable dark mode extensions for this site and try the built-in toggle again. Check browser settings to allow per-site theme control.

Auto-submission requires JavaScript running and the tab active. If you switched tabs on mobile, the browser may have throttled the background timer. Hit Submit manually when you notice. Report with your device/browser details.

Absolutely! ThunderStudy uses a responsive layout optimised for tablets. Landscape mode shows the full desktop sidebar. Portrait mode shows the mobile dock.