Comparison

Which WiFi vs Dual SIM Data Usage

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Which WiFi

Instantly see which Wi-Fi network and access point you are connected to. Receive notifications for connection changes and customize your network view with unique names, icons, and sounds. It helps you understand your Wi-Fi status without needing to open settings.

Highlights
  • Instant Wi-Fi connection status
  • Notifications for network changes
  • Customizable access point names
  • Colored icons and sounds for access points
  • Lock Screen and Home Screen widgets
  • Historical connection data
Features
Read full description

You are connected to Wi-Fi ... but, which Wi-Fi? See instantly which Wi-Fi you are connected to! Get notified when you connect, switch network or access point, or disconnect. See your Wi-Fi connection on your Lock Screen, your Home Screen, your Today View. or in StandBy. Distinguish between different access points serving the same Wi-Fi network. Assign individual names, colored icons, and sounds to your access points. See which Wi-Fi networks and which access points you were connected to. A small symbol in the top-right corner of your device shows that you are connected to Wi-Fi. But which Wi-Fi? You may slide down the top right corner of you screen and then long-press the Wi-Fi symbol to finally see the SSID of your Wi-Fi. Or you may look for the Settings app and open it. But you still don't know which access point. And your device does not tell you when you switch, connect, or disconnect. The Which WiFi app tells you, instantly. Which WiFi always tells you instantly about changes when the app is active (on the app's main page and through notifications) or running in the background (through notifications). To be fair, notifications may incur some delay when iOS stops the Which WiFi app while in the background. This may occur for example when your use memory-heavy apps. If you switch networks frequently, the widgets may hit iOS-imposed limitations and miss one or the other changes. You may notice both effects for a few days, but then iOS learns at what times or locations you actually look at Which WiFi's notifications and widgets. iOS also learns that the Which WiFi app is very frugal with power, memory, and computation consumption. After a while, background notifications and widgets get very reliable even in background mode. The Which WiFi app needs access to your location to work reliably. It stores such location information only on your device and on your personal iCloud account, where it consumes less than 0.02% of your free quota. It never sends such information to us or anybody else, because we know that location information is very critical for your privacy. This is also the reason why we finance the development of this app through a small upfront payment when you purchase the app, and why we refrain from financing it through advertisements. Any ad provider integrated in the app would also get access to your location information, and be tempted to abuse that information to track you.

About

Dual SIM Data Usage

Features
Read full description

A data usage tracker for people who use two SIMs (eSIMs) on one iPhone. The Settings app doesn't make it easy to see how much each SIM has used this period, or how much is left. This app records your cellular data separately for each SIM, based on which line was in use at the time. ■ Great for • Using a work SIM during the day and a personal SIM at night • Juggling two personal SIMs • Tiered plans where you want to stay in the cheaper tier but keep going over ■ Features • Usage, remaining data and days left for each SIM • Forecast for the end of the period at your current pace • Comparison with the same point last month • Monthly plans with a reset day, and plans valid for a fixed number of days (30/90/180/365) • Tiered plans (price depends on usage): see your current tier and how much more until the next one • Set a goal tier to see a daily allowance and today's usage • Count limited-time add-ons (e.g. for travel) separately • Charts for the last 7 days, 30 days and 12 months, filterable by SIM • Home Screen and Lock Screen widgets • Optional: track Wi-Fi by network (SSID) too — handy for capped pocket or travel Wi-Fi • Notifications at 80%/100%, before the next tier, and when you're on pace to exceed your goal • Match the numbers to your carrier's app ■ How it counts The app reads the iPhone's cellular data counter and adds the increase since the last count to the line that was in use. With the widget added, it counts automatically every 15–30 minutes. Usage while you switch lines between counts is estimated, so numbers may differ slightly from your carrier's. Prices are estimates — check your carrier's app or website for exact usage and charges. ■ Privacy No account needed. Records stay on this iPhone and are never sent anywhere. The app does not look at the content of your traffic or which apps you use.

Screenshots

Which WiFi4 screens
Dual SIM Data Usage4 screens

Verdict

The call

The clearest difference is price: Dual SIM Data Usage at Free against Which WiFi's $0.99. Dual SIM Data Usage also leads on update cadence (every 4 days vs every 22 months). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Dual SIM Data Usage is free to download; Which WiFi costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Which WiFi ships an update every 22 months, Dual SIM Data Usage every 4 days. The most recent releases landed on November 3, 2026 and October 31, 2026 respectively.

Scorecard2 real differences · 7 level
Which WiFi versus Dual SIM Data Usage: the parameters behind the verdict, then further details
ParameterWhich WiFiDual SIM Data Usage
Price$0.99Free — better
Rating5.0 (1 ratings) — better—
Number of ratings1 — better—
Update frequencyEvery 22 monthsEvery 4 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad — betteriPhone
Requires iOS16.0 — better17.0
Further details — not scored
Size9 MB3 MB
Age rating4+4+
DeveloperValue from Software LLCKENICHI AOMI

In-app purchases

None

Which WiFi

No in-app purchases

None

Dual SIM Data Usage

No in-app purchases

Questions

Is Which WiFi free?
Which WiFi costs $0.99, with no in-app purchases.
Is Dual SIM Data Usage free?
Dual SIM Data Usage is free to download, with no in-app purchases.
Do Which WiFi or Dual SIM Data Usage have ads?
Neither Which WiFi nor Dual SIM Data Usage shows ads.
Which is updated more often, Which WiFi or Dual SIM Data Usage?
Which WiFi ships an update every 22 months, and Dual SIM Data Usage every 4 days. Most recently, Which WiFi was updated on November 3, 2026 and Dual SIM Data Usage on October 31, 2026.

Other comparisons