Blog · 488 guides

Career guides by Science of Apps for 2027: the certifications worth earning

Ranked guides to the certifications worth earning in 2027: by subject, job, life stage, country and goal. Every pick names the issuer, the fee and study time as of November 2026, links straight to the official page, and pairs it with a free Science of Apps test you can take today.

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Free certification

Turn what you know into a credential.

Free, test-based UX, UI and product certifications. Answer real product scenarios, graded on our server, and earn a founder-signed certificate anyone can verify and you can add to LinkedIn.

  • Credential ID
  • QR verification
  • LinkedIn-ready
Free PDF · 74 pages · 2 editions

The Laws of UX, in one field guide

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.

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Free PDF · 74 pages

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Free PDF · 90 pages · 2 editions

100+ Subscription Paywalls, decoded

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.

  • 110 paywalls rated
  • 34 Laws of UX
  • 12 frameworks

Which paywall scored 4.8 out of 5, and which scored 2.6? It’s all inside.

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Free PDF · 90 pages

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