Sampled from 6 of USGS WaterFlow's App Store screenshots — background, accent and theme, measured by LaunchShots (not something Apple publishes).
#04143C bg
#273457
#8CDCD4 accent
#FFFFFF text
WaterFlow turns every USGS streamgauge in the country into a pocket-sized field guide for moving water. It was built for one moment: you wake up, glance at your phone, and the river is already there. The Home Screen widget shows live flows for the gauges you watch — no app to open, no websites, just the number that decides your day. Behind the widget is the full field guide: real-time flow rates (cubic feet per second), gauge height, water temperature, and the local NOAA forecast — drawn straight from the official sources, no middleman. — HOME-SCREEN WIDGET — The reason WaterFlow exists. Pin the gauges you watch and wake up to their current flow: big clear numbers with a seven-day sparkline each. Small, Medium, and Large layouts, plus lock-screen accessory widgets so even a glance at the clock tells you whether the river came up overnight. — BY STATE — Pick a state, see every active…
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 16 screenshots above are USGS WaterFlow's answers to those questions — they're public, they're real, and they made it through Apple's review.
What the numbers say: USGS WaterFlow runs a mixed light-and-dark set where the background shifts from screenshot to screenshot (first shot #04143C) — each image has to stand on its own, so the captions carry more of the story. The accent colour we picked up, #8CDCD4, 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 Weather apps approach the same problem? Browse more Weather 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.