ASO
App Store Screenshots That Convert: A Practical Guide for Indie Apps
Keywords get you into search results. Screenshots decide whether people tap. In a results list, users see your icon, name, subtitle and your first screenshots, next to competitors doing the same. Here's how to make those frames work.
The first two screenshots carry the page
Most people never scroll your gallery. Treat screenshot one as the headline and screenshot two as the proof. Everything else is for the few who are already interested.
- Screenshot 1: the main promise, in words a stranger understands, over the product's best moment.
- Screenshot 2: the proof: the feature that makes the promise believable.
- Screenshots 3+: secondary features, social proof, personalisation, widgets.
Write captions people can read at thumbnail size
- Three to six words per caption. Big type. High contrast.
- Speak about outcomes ("Learn history in 5 minutes") rather than features ("Narrated slideshows").
- Use the same words people search for. It reinforces relevance for the reader.
Show the real product
Real screens build trust; abstract illustrations make people wonder what the app actually looks like. Crop or zoom on the part that matters rather than shrinking a whole busy screen.
Keep one visual system
Same caption position, same type, same background treatment across frames. A consistent set looks like a real product; five different styles look like a template. On my own apps, I design screenshots to look like the app's own universe rather than generic marketing.
Don't forget the preview video
An app preview autoplays in some places, so its first seconds act like a screenshot. Show the product in use immediately, no logo intro. Check every frame: system UI like the status bar or Dynamic Island can look wrong in recordings.
Localise the captions
Captions in the user's language and spelling, with a hero screenshot adapted to each market if it makes sense. Even US and UK English differ.
Test, then keep what wins
Change one thing, ideally the first screenshot, wait for enough traffic, and compare conversion from page view to install. Keep the winner, test the next frame.
William Souef is the founder of Histia and Rockie, based in Antibes, France. He has shipped 7 iOS apps and audits mobile apps on ASO, onboarding, paywall and AI. App audits · LinkedIn