Sampled from 6 of WebCardio's App Store screenshots — background, accent and theme, measured by LaunchShots (not something Apple publishes).
#4C4C4C bg
#656565
#04BCD4 accent
#FFFFFF text
Reading the caption text from the screenshots in your browser…
WebCardio App is companion to the WebCardio continuous ECG monitoring body worn Biosensor.This App is intended to function only with the Biosensor which will be applied under medical supervision and available only on prescription.The App connects to WebCardio cloud backend and relays the data from the Biosensor to cloud periodically. Medical Disclaimer : Use the device under medical supervision only .
Every shipping app on the App Store has gone through the same decisions you're working through right now: which screenshot goes first, what caption sits over it, which device frame to show, what color the background should be. The 7 screenshots above are WebCardio's answers to those questions — they're public, they're real, and they made it through Apple's review.
What the numbers say: WebCardio runs a mixed light-and-dark set where the background shifts from screenshot to screenshot (first shot #4C4C4C) — each image has to stand on its own, so the captions carry more of the story. The accent colour we picked up, #04BCD4, is the one to reuse for badges, arrows and highlighted words if you borrow this look. Hit Use this style to open the editor with these exact colours and drop your own screenshot in.
Notice the first screenshot in particular. It's the one users see in search results and on the product page, and it's where most apps spend their best caption and tightest design. Look at the proportion of background to phone, where the text sits, what one thing the image is trying to communicate.
Want to see how other Medical apps approach the same problem? Browse more Medical apps in the showcase.
Open LaunchShots and design your App Store & Google Play screenshots — pick a device frame, drop captions, ship in minutes. Free, in your browser.
Open the screenshot editor →Closest background + accent colours among the listings we've analysed — useful when you want to see the same palette handled by a different team.