Data Usage Monitor & Widget

Cellular Tracker per SIM/eSIM

Only for iPhone

Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.

iPhone

Counts both SIMs separately and automatically, tells you the day your pack runs dry, and puts it on the Lock Screen. One payment, no subscription. 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/

Ratings & Reviews

  • This app hasn’t received enough ratings or reviews to display an overview.

The developer, Abdelkarime Achtaou, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    Abdelkarime Achtaou
    Size
    6.7 MB
    Category
    Utilities
    Compatibility
    Requires iOS 18.0 or later.
    • iPhone
      Requires iOS 18.0 or later.
    • Mac
      Requires macOS 15.0 or later and a Mac with Apple M1 chip or later.
    • Apple Vision
      Requires visionOS 2.0 or later.
    Languages
    English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    © Data Usage 2026
  • Privacy Policy

    • More by Abdelkarime Achtaou

    You Might Also Like