Shopify powers well over 4 million live stores, and every one of those sites has the same problem: adding a small piece of live data — how many people are reading, which countries visit, where people click — usually means installing an app you'll have to maintain, update and trust.
No app. Shopify renders raw HTML and script tags inside a Custom Liquid block, so there is nothing to install from the App Store. Every widget below is one snippet, pasted in once. Pick one and the page tells you the exact menu path for Shopify, the gotchas, and what to do if you're on an older theme or a page builder.