iPhone only · iOS 17.6+ · English & Español

Your iPhone, measured.

Live Wi-Fi quality, battery, CPU, memory, storage and the weather — in the Dynamic Island, on the Home Screen, and in Control Center. Everything is measured on device and nothing leaves it.

Download on the App Store One-time purchase · no subscription
0–100
Wi-Fi score
1 s
Sample rate
0
Accounts
DataFastView — the Now tab with the Wi-Fi quality score
The toolkit

Six things your iPhone already knows, finally visible.

All of it sampled locally, once a second, with the app open — and cached for the widgets when it is not.

Wi-Fi quality

A 0–100 score from router latency, internet latency, jitter and packet loss — not the bar count.

Energy & system

Battery level and state, Low Power Mode, thermal state, CPU, memory breakdown, storage and uptime.

Dynamic Island

Two metrics of your choosing, live, plus rotating Lock Screen phrases.

Home Screen widgets

Launch actions, a storage-and-Wi-Fi widget, and a large weather widget.

Weather

Now, feels-like, the next hours and the next days, from Apple Weather.

Password generator

Strong passwords made on device, with a live entropy readout and a clipboard that expires.

Guide

How to use DataFastView, screen by screen.

Four tabs. Here is what each one does and exactly how to reach it.

01 · Now

What your connection is actually doing

The Network card scores your link from 0 to 100 using four measurements you can read for yourself: round-trip time to your own router, round-trip time to the internet, jitter, and packet loss. Live upload and download rates sit next to the ring. Tap Measure download speed when you want a throughput number too — it is a deliberate action, never a background drain.

  • 1Open the app — you land on Now.
  • 2Give the score a few seconds; it says Collecting samples… until it has enough.
  • 3Tap How this score is measured to see the exact weighting.
ExcellentRouter latencyJitterPacket loss
Network card
02 · Now

Energy, system and the next two days

Below Network sit Energy — level, charging state, Low Power Mode and thermal state — and System: CPU with a fixed 0–100 % scale, a segmented memory bar (active, wired, compressed, free), free storage and uptime. Under those, a weather trend traces the next 48 hours, with a symbol on every peak and trough.

  • 1Scroll down on the Now tab.
  • 2The trend chart appears once the forecast has loaded.
  • 3There is no battery temperature or cycle count — iOS has no public API for either, so the app does not guess.
ActiveWiredCompressedFree48-hour trend
System card and weather trend
03 · Setup

Decide what the Dynamic Island shows

Pick one metric for the left side of the island and one for the right. Every option shows its live value while you choose, so you are picking from real numbers rather than names. The same tab holds the island's colour, the Home Screen actions and the rotating Lock Screen phrases.

  • 1Tap Setup in the tab bar.
  • 2Open Left side or Right side and tap the metric you want.
  • 3Turn the island on in Settings → Show in Dynamic Island.
CPUMemoryStorageUptimeClockThermal state
Metric picker
04 · Widgets

Three widgets, one of them the weather

A medium widget of your own launch actions, up to ten in two rows — and you can load a screenshot of your wallpaper so it reads as transparent. A small widget with free space and the last Wi-Fi reading. And a large weather widget: now, feels-like and five days, from Apple Weather.

  • 1Touch and hold the Home Screen, tap Edit → Add Widget.
  • 2Search for DataFastView and pick the size you want.
  • 3For the weather widget, open the app once so it can look up where you are.
Apple WeatherLargeMediumSmallControl Center
Weather widget on the Home Screen
05 · Tools

Passwords that never leave the device

Choose the length and which character classes to use, then let the generator draw from the system's cryptographic random source. Turn on Exclude look-alikes to drop O 0 I l 1, and Exclude runs to reject abc, 123 and qwe. The strength readout is real entropy in bits, not a mood ring. Nothing is stored, nothing is sent, and the clipboard copy expires.

  • 1Tap Tools in the tab bar.
  • 2Set the length and the character classes.
  • 3Tap the copy icon, or Regenerate for another one.
StrongEntropy in bitsOn deviceExpiring clipboard
Password generator
Pricing
One payment of US$ 1.99

Buy it once and it is yours, on every iPhone signed in to your Apple Account. There is no subscription, no trial that turns into a bill, and nothing to unlock later.

  • No account
  • No tracking
  • No ads
  • No in-app purchases
Get it on the App Store