Guides on building, designing and growing apps from the Science of Apps team: what apps cost, how users decide and why they drop off, how product teams work, and the AI tools and startup moves shaping 2027.
How Instagram, Dropbox, Tinder, Netflix, X and Amazon build on pride, greed, lust, envy, gluttony, wrath and sloth — and the virtue that keeps each one ethical.
All 38 languages with 50 million+ speakers (Ethnologue 2026): speakers, history, scripts, numerals and 'How are you?' in each — with every figure sourced.
A design history of 50 famous monuments, from 11,600-year-old Göbekli Tepe to the Burj Khalifa: who built them, when and how they changed, with a map.
Rotate a real 3D scan of the human body, peel back its layers and click any of 164 parts — bones, organs, senses, skin and nails — to see why each has its shape and whether it could sit elsewhere.
Why is every body part shaped the way it is? Domes protect, tubes carry, folds add surface, levers move. The design logic of 164 parts, and which can be moved.
The 10 best UX/UI design agencies of 2026, ranked on behavioral science, research, outcomes, speed and price: Science of Apps, NN/g, IDEO, frog and more.
What apps really cost in India, how long they take, who should build them and how to ship to the stores — written for founders, not agencies.
Step-by-step guides to making an app — with no-code tools, AI, Android Studio, Figma or a team — from validating the idea to login and payments.
App ideas, AI startup ideas, SaaS and micro-SaaS ideas, and project ideas for students — each with the user problem behind it and how to test it.
How apps make money, what downloads and ads really earn, pricing and monetization models, and realistic ways for developers and students to earn.
App store optimization, launch playbooks, reviews, retention benchmarks, push notifications and referrals — tactics that grow apps without tricks.
How to become a product manager in India, salaries, interview questions, frameworks, metrics, roadmaps and PRD templates — from a working product leader.
UI vs UX, how to become a UX designer in India, salaries, portfolios, research methods, dark patterns, accessibility and the Laws of UX — explained simply.
Vibe coding, AI coding tools, AI app builders, AI agents, MCP, RAG, prompt engineering, and how to show up in ChatGPT answers — explained without hype.
How to start a startup in India: registration, DPIIT recognition, company structure, seed funding, angels, VCs, pitch decks, ESOPs and government schemes.
Honest head-to-head comparisons of the tools startups use — design, analytics, payments, hosting, CRM and collaboration — with a clear verdict for each.
Flutter vs React Native, Kotlin vs Java, SQL vs NoSQL, the best backend and tech stack for startups, and what an API is — decisions explained simply.
Free templates and calculators for product teams: roadmaps, personas, journey maps, competitor analysis, RICE scoring, launch checklists and OKRs.
How the logos, typefaces, phones and screens we use every day were designed and redesigned, told with dated sources and archive images.
Why traffic lights are red, why the save icon is a floppy disk and why your feed never ends: the research and history behind everyday design.
How the world's great structures were designed and built — wonders, temples, World Heritage Sites, airports and metros — with dates, plans and photos.
How ChatGPT, Google Search and the internet actually work, what app permissions reveal and why famous products failed — explained with diagrams.
Science of Apps analyses of public app-store data and published benchmarks: ratings, pricing, retention and what top apps have in common.
Every Science of Apps certification gets a hiring playbook: how employers screen for the role, the interview loop, what it pays and a prep plan — each linked to its free test, so you can read, practise and prove it. Browse all 622 tests in the certification catalogue.
A/B testing interview questions and jobs in 2027: hypotheses, sample size, SRM, peeking, guardrails and CUPED, with answers, the roles that hire and a plan.
Read the playbook →Take the A/B Testing and Experimentation Certification →
Adaptability for 2027 careers: handling change, learning fast, resilience after setbacks, flexibility with roles and tools, adapting to AI and proving it.
Read the playbook →Take the Adaptability and Learning Agility Certification →
How to pass an advanced Excel test for analyst jobs in 2027: XLOOKUP, dynamic arrays, LET, Power Query, data models, real test tasks with answers and a plan.
Read the playbook →Take the Advanced Excel and Formulas Certification →
Advanced prompt engineering skills for AI engineer roles in 2027: system prompts, structured output, context engineering, evals, cost and injection.
Read the playbook →Take the Advanced Prompt Engineering Assessment →
Advanced SQL interview questions for senior analyst, analytics engineer and data engineer jobs in 2027: window functions, CTEs, gaps and islands, performance.
Agile and Scrum skills employers want in 2027: Agile Manifesto values, Scrum roles, events, artifacts, Sprint Goals, Definition of Done and scrum master jobs.
Read the playbook →Take the Agile and Scrum Fundamentals Certification →
A behavioral UX audit of your app or SaaS product, delivered in 2–4 weeks at a fixed price.
60 research-backed principles in 6 categories — what each one means, why it works on the human brain and how to use it on your own screens. Written by Sushant Singh, founder of Science of Apps, who has scaled consumer apps to lacs of users and spent 10+ years leading product across startups and digital businesses in the US, EU & India.
110 real paywalls from top apps, taken apart, rated out of 5 and decoded with the Laws of UX — plus the frameworks, copy and checklists to ship your own. By Sushant Singh, founder of Science of Apps.
Taj Mahal
Machu Picchu
Great Pyramid
