DataLeft vs Data Usage Monitor & Widget

How much data is left? DataLeft answers on your Lock Screen — before you ever open the app. A calm gauge shows what's left of your plan and how many days it needs to last. If you're burning through data faster than the days, you'll see it in one glance — and get a heads-up before it's a problem. AT A GLANCE • Remaining data as a dual-ring gauge: data left vs days left • Widgets for Home Screen, Lock Screen, and StandBy • Alerts at 50 / 80 / 95% — helpful, never alarming BUILT FOR TRAVEL • Add your travel eSIM before you fly • Get a reminder to switch on arrival, and another before it expires • Fixed-period plans with D-day countdown PRIVATE BY DESIGN • No subscription. No server. No VPN. • Nothing leaves your device — there is nothing to collect • Works entirely offline DATALEFT PRO (one-time purchase) • Multiple plans — home plan and travel eSIMs side by side • Deep insights: 30-day trends, weekly rhythm, cellular vs WiFi • Daily budget alerts • Premium widgets Note: iOS provides device-wide network counters to apps. DataLeft shows accurate totals for your device; per-app breakdowns are not possible for any third-party app.

Know how much cellular data you have left, and how long it will last. Data Usage counts what your phone actually sends and receives, groups it by billing period, and tells you the day your allowance runs dry at the pace you are going. KNOWS WHICH SIM SPENT IT Two lines, two plans, counted separately and attributed automatically. iOS tells the app the moment the data line switches, so you never pick a SIM by hand and never see one line's usage folded into the other. Physical SIM, eSIM, either, both. YOUR PLAN, NOT A TEMPLATE Monthly on a fixed date. A 30 day pack. Four weeks. A 365 day annual plan. Or a prepaid top up that does not renew at all and stays finished until you buy another. Set the size, set the date, done. TELLS YOU BEFORE IT IS TOO LATE Warnings at half, at eighty percent, and at the limit. A projected total for the period, and a daily rate that would make the pack last. No overage surprise on the bill. WIDGETS EVERYWHERE, FREE A Home Screen widget, all three Lock Screen sizes, and a Control Center button, so the number is there without opening anything. Free, all of them. EXACT, AND IT SHOWS ITS WORKING A diagnostics screen with the kernel's own byte counters, every reading the app took, the gap before each one, and a flag on any figure it had to estimate after a reboot or a counter reset. If you want to check the number, you can. Nobody else lets you. ABOUT PER APP USAGE iOS does not report which app used which bytes, and no App Store app can do it without rerouting your traffic through a proxy, or on a device your employer manages. If you have seen that promised in a screenshot somewhere, it was not on iPhone. We would rather say so here than have you find out after downloading. NO ACCOUNT. NO SERVER. NO TRACKING. Nothing leaves your phone. There is no login, no server and no analytics, and nothing reroutes, proxies or inspects your traffic in order to measure it. The counting happens on the device, from numbers iOS already keeps. ONE PAYMENT The counting is free forever, on every line. One optional payment unlocks the forecast, CSV export, the larger widgets and seven more typefaces. No subscription, no renewal, no second paywall behind the first. Ten typefaces, including a proper mono, because a number you check every day should be a number you like reading. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/