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Screenshots are one of the biggest levers in App Store Optimization. Design a scroll-stopping first screen, tell a clear story across the set, and export store-ready images - free, in your browser.
App Store Optimization has two halves. Keywords, title and category decide whether the listing is shown. Icon, screenshots and rating decide whether the person who sees it installs. ASO screenshots are the second half: they do not earn impressions, they convert the impressions you already have.
That makes them the cheapest thing to improve. A new screenshot set needs no code change and no new build review on Google Play, and on the App Store it can be tested against the current set before you commit to it.
The first one to three screenshots are what most users actually see, in search results and at the top of the listing, so put your biggest benefit up front. Use short, benefit-led headlines and highlight the words that matter for your category.
A consistent visual rhythm across the set signals quality and keeps users swiping - which is exactly what ASO rewards.
Screenshot 1 states the main outcome in five words or fewer over the screen that proves it. Screenshot 2 shows the feature people search for. Screenshot 3 answers the obvious objection: price, privacy, setup time or offline use. Screenshots 4 and later cover secondary features, integrations and settings, one idea per screen.
Write the headlines first, as a list, before touching the design. If the list does not read as a pitch on its own, the pictures will not rescue it. Then drop the captures in and keep the headline position, type size and background family the same from the first tile to the last.
Say what the user gets, not what the app has. “Split a bill in ten seconds” is a benefit. “Advanced bill splitting engine” is a feature name. Keep each headline to one line at phone size, and check it as a thumbnail, because that is how it appears in search.
Google Play’s metadata policy does not allow ranking or promotional claims on screenshots: “Best”, “#1”, “Top”, “New”, “Sale”, “Million Downloads”, and calls to action such as “Download now” or “Install now”. Play also asks that a tagline take up no more than about 20% of the image. The review step in this generator flags those words before you export.
For the App Store, export the iPhone 6.9" set at 1320×2868 and, if the app runs on iPad, the 13" set at 2064×2752. For Google Play, export 1080×1920 (9:16) and upload at least four, which is the minimum for Play’s recommendation modules. The complete tables are at https://freeappscreenshots.com/app-store-screenshot-sizes and https://freeappscreenshots.com/google-play-screenshot-guidelines.
Design once and export both stores from the same project. Play prefers the real in-app UI without extra device frames, so consider a frameless variant of the same set for Play.
ASO is iterative. Because there is no signup and no waiting, you can quickly try new headlines, backgrounds and orderings, then re-export the full set. Apple’s Product Page Optimization in App Store Connect and store listing experiments in Play Console both split traffic between your current screenshots and a variant.
Change one thing per test: the first screenshot, the headline wording, or the background. If you change all three you will not know which one moved the conversion rate. Everything runs locally in your browser, so your unreleased designs stay private.