# Data Usage Monitor & Widget — Cellular Tracker per SIM/eSIM

> Cellular Tracker per SIM/eSIM (iPhone/iPad app by Abdelkarime Achtaou.)

- Source: https://appshunter.io/ios/app/data-usage-monitor-and-widget/id6815763404 (this page in markdown: same URL + `.md`)
- Developer: [Abdelkarime Achtaou](https://appshunter.io/developer/1861126997)
- Category: Utilities, Travel
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 6 MB
- Languages: American English
- Released: 2026-09-30
- Data updated: 2026-10-21

## What is Data Usage Monitor & Widget?

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/

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Everything Unlocked | $4.99 | one-time |


## Is Data Usage Monitor & Widget safe?

Not enough ratings yet to assess Data Usage Monitor & Widget.

## Is Data Usage Monitor & Widget legit?

Data Usage Monitor & Widget appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Data Usage Monitor & Widget is 70 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-09-30

No release notes.

## Apps similar to Data Usage Monitor & Widget

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [my mobile data usage](https://appshunter.io/ios/app/my-mobile-data-usage/id6811533054) | — | Free | Utilities |
| [DNSimple](https://appshunter.io/ios/app/dnsimple/id6790056292) | — | Free | Utilities |
| [GigaGuard: Data Usage Widget](https://appshunter.io/ios/app/gigaguard-data-usage-widget/id6784099755) | — | Free | Utilities |
| [Privacy Vault - Hide Apps](https://appshunter.io/ios/app/privacy-vault-hide-apps/id6806910288) | 5.0 (1) | Free | Utilities |
| [Internet Data Tracker Manager](https://appshunter.io/ios/app/internet-data-tracker-manager/id1100091837) | 4.6 (112) | Free | Utilities |
| [Photo Countdown Widget](https://appshunter.io/ios/app/photo-countdown-widget/id6751094714) | 5.0 (5) | Free | Utilities |

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All apps by Abdelkarime Achtaou: https://appshunter.io/developer/1861126997

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-10-21.*