AppSnapify: We Built an App Store Monitoring Product

Here's a situation every agency that touches mobile work will recognise. You need an app's store creative, the screenshots, the icon, the works, at proper resolution. The client doesn't have the originals; the person who made them left two agencies ago; the only place the assets exist is the App Store listing itself. And when you right-click a screenshot on that listing, what you get is a thumbnail.

We hit this enough times on our own app launches and client work that we wrote a script for it. Then the script grew a product around itself. It's called AppSnapify, it's live now, and this is what it does and why.

The thumbnail problem, and the trick that solves it

Both Apple and Google serve listing images through a resizing CDN. The page you look at never loads the real artwork; it requests small WebP renditions, usually 300 to 600 pixels wide, because that's all a listing page needs. The full-resolution originals exist on the CDN, but nothing on the page ever links to them directly.

The listing page does, however, embed each image's true dimensions in its structured data. AppSnapify's free tool reads those real dimensions out of the page's JSON and asks the CDN for exactly that size. The CDN, helpfully literal, obliges. Paste a listing URL from either store, and you get the complete artwork set back as a ZIP at native resolution: every screenshot, the icon at its full size, for any app on either store. No account, no email gate, same rules as our Labs tools.

That alone has earned its keep in our own studio many times over. Rebuilding a listing, pitching a redesign against the current creative, or recovering assets a client has genuinely lost: all of it starts with actually having the pixels.

Then we realised the interesting part: listings change silently

While building the ripper we kept noticing something more valuable than the assets themselves. App store listings are living surfaces. Icons get refreshed, screenshots get reshuffled, titles grow keywords, versions roll. Your competitors are running these changes as experiments, and unless you're staring at their listing on the right day, you never see it happen. The stores publish no history. Yesterday's listing is simply gone.

For anyone doing ASO seriously, that invisible churn is the actual battlefield. When a competitor swaps their first screenshot, they're telling you what their data said about the old one. When their title changes, that's a keyword decision you can learn from for free. All of it evaporates unless something is watching.

So the product on top of the free tool is a watcher. AppSnapify snapshots the listings you track on a schedule, diffs each snapshot against the last, and alerts you the moment anything changes: screenshots, icon, title, version. Alerts arrive wherever you work, by email, Slack, webhook, or the in-app timeline, and the history builds into a record you can scroll back through. What did their listing look like before the redesign? Now there's an answer.

Who it's for

App marketers and ASO folks get competitor monitoring that doesn't depend on remembering to check. Watch your category's top apps and let the diffs come to you; over a few months the timeline becomes a record of what your competitors tested and what they kept, which is as close to reading their results as you can honestly get.

Agencies and studios get both halves. The ripper solves the where-are-the-originals problem we built it for, and the tracker quietly watches your own clients' listings too, because an unannounced change to a listing you're responsible for is something you want to hear about from a webhook, not from the client.

Founders with an app in the stores get an early-warning system on their own listing and their rivals', for the price of pasting a few URLs.

It's launched as a free beta while we finish billing: the ripper is free outright, and the tracker's free tier has beta limits that will stay generous for early users. The whole site runs in English, Spanish and German, because ASO is nowhere near an English-only discipline.

Why we keep doing this

AppSnapify is the same pattern as the rest of our product work, from Atchoo, our Shopify analytics app, to FORQ, our QR routing tool for app store links: hit a real problem in client work, solve it properly instead of once, and then ship the solution rather than keeping it in a drawer. An agency that builds and operates its own products makes different, better decisions with client money, because it has felt the same trade-offs from the owner's side of the table.

And there's a straightforwardly selfish reason too. Every product teaches us something we bring back to client work. AppSnapify has already sharpened how we think about the app store surface for the apps we build and market, the same way the ads trackers sharpened our reporting and the fee calculator sharpened our margin conversations.

If you have an app in the stores, or a competitor who does, go paste a URL into it. The first ZIP of native-resolution artwork tends to make the point faster than this article can.