The PainHunt Blog

Guides on validating startup ideas, honest tool comparisons, and data-backed opportunities — drawn from the real complaints founders usually never see.

All articles — page 2

Guide

Next.js App Router migration without breaking production

How to migrate a real Next.js app from Pages Router to App Router — the four failure modes that hit production apps, and an incremental path that avoids each.

Sep 10, 2026 · 5 min read
Guide

How to find SaaS ideas in app store reviews

App store reviews are where people complain about products they already paid for. How to mine them for buildable ideas — and what to ignore.

Sep 10, 2026 · 5 min read
Guide

How to check if your SaaS idea already exists

Most founders check Google and Product Hunt, then stop. Seven places competitors actually hide — and why finding one is usually good news.

Sep 10, 2026 · 5 min read
Comparison

The best embedded databases for Node.js in 2026

A neutral comparison of embedded databases for Node.js — relational, document, key-value, and analytical — and the trade-offs that decide between them.

Sep 10, 2026 · 5 min read
Opportunity

Google Merchant Center suspended for misrepresentation

Suspended merchants get a policy list, not a failing field. 34 high-scoring threads show weeks of guessing — and where a diagnostic tool actually fits.

Sep 7, 2026 · 5 min read
Opportunity

Fixing Google Merchant Center product disapprovals

Products vanish from Shopping over a GTIN, a unit format, or a price mismatch. 45 merchant threads describe validating the feed after rejection, never before.

Sep 7, 2026 · 5 min read
Opportunity

Resume screening when every CV is AI-optimized

Keyword matching worked because writing a perfect resume was expensive. It isn't anymore. 34 threads describe screening that now sorts noise from noise.

Aug 25, 2026 · 5 min read
Opportunity

Detecting malicious npm packages before they install

Vulnerability scanners answer a different question than supply chain attacks ask. 208 threads describe compromise arriving through install scripts.

Aug 25, 2026 · 5 min read
Blog (page 2) — Startup idea validation & SaaS opportunities | PainHunt