Sampled from 4 of ZeroBooks Reader's App Store screenshots — background, accent and theme, measured by LaunchShots (not something Apple publishes).
#040404 bg
#272727
#0C8CEC accent
#FFFFFF text
Reading the caption text from the screenshots in your browser…
ZeroBooks Reader brings a new generation of reading experience to books and documents alike. • Advanced text recognition (OCR) • AI voices and AI-powered OCR • Background sounds • Customizable speed settings • Customizable pronunciation options • Multi-language support • Notes, and cross-references between them • Quotes taken straight from a document • Bookmarks • Select a passage of a spoken document and turn it into a repeating loop • Turn a selected passage into a separate document • Organize files into collections • Convert documents between formats • Edit documents • Formatting such as bold and italic, and moving between formatted content With all of this, ZeroBooks Reader gives you a fluent and comfortable reading and listening experience. NOTE: AI voices and AI OCR require API keys from third-party AI providers, which are supplied by the user. The voices of the device's own on…
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 ZeroBooks Reader's answers to those questions — they're public, they're real, and they made it through Apple's review.
What the numbers say: ZeroBooks Reader runs a dark set with one background colour (#040404) carried across every screenshot — the listing reads as a single poster when the shots sit side by side in search results. The accent colour we picked up, #0C8CEC, 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 Book apps approach the same problem? Browse more Book 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.