Databit iconDatabit
Data usage manager for iPhone

Track your data usage in real time

See how much mobile data you have left, get alerted before you run out, and find out if you're paying for gigabytes you never use. Databit measures byte by byte — the same way your carrier does, but on your side.

Download on the App Store
4.6 · 204 ratings · one-time $1.99
Databit on iPhone showing the circular data usage meter: 7.06 GB remaining, 70.6% of the plan
4.6 ★204 ratings
$1.99one-time, forever
1 byteprecision
$0/mono subscription
12languages

Stop paying data overage charges

When you run out of data, your carrier charges for every extra MB — and never warns you when you're close. Databit does. A one-time $1.99: no subscription, no ads, no in-app purchases.

Real-time usage

No calling your carrier or logging into their app: swipe and see how many GB you have left.

Alerts at 20% and 10%

Notifications when your data runs low and when it runs out. Zero bill surprises.

Widgets for iOS

Two widgets with remaining GB, used data and days left, always visible on your screen.

Automatic reset

The counter resets itself on your billing day. Works with any plan and any carrier.

Daily usage chart

Spot the day your usage spiked and export your full history as CSV.

Apple Watch & hotspot

Check your data from your wrist, and tether without fear.

Download Databit on the App Store

Minimalist design. Instant answers.

A circular meter you read at a glance, widgets so you never open the app, and charts for those who want the detail.

Circular mobile data meter in Databit: 7.06 GB remaining (70.6%) until November 1
Your remaining data, in real time
Daily mobile data usage chart in Databit with CSV export
Daily usage chart with CSV export
Databit widgets on iOS showing GB used, GB remaining and days left
Widgets: used, remaining and days left
Databit settings: plan data, billing reset date and usage alerts
Set your plan and billing day once
Databit widgets in the iPhone Today view with percentage and GB remaining
Also in Today View, right off the lock screen

How it works

Two minutes of setup and you'll never wonder how much data you have left again.

1

Set up your plan

Enter your plan's GB (5 GB, 15 GB, “unlimited” with a threshold…) and your billing day. Databit resets the counter automatically every cycle.

2

Watch your usage live

The circular meter shows your remaining GB and percentage, measured byte by byte over LTE, 4G, 3G and EDGE. Or just glance at the widget.

3

Get alerts and save

Databit warns you at 20%, at 10%, and when data runs out. If you have gigabytes left over month after month, you have the evidence to switch to a cheaper plan.

Data usage guides

Clear answers to the questions we all have about mobile data — and how to solve them with Databit.

iPhone

How to check data usage on iPhone

Where to find your usage in iOS, why the Settings counter misleads, and how to see it in real time.

Read guide → Data plan

How to see how much data you have left

Verizon, AT&T, T-Mobile or prepaid: every way to check your balance — and the fastest one.

Read guide → Apps

The best data usage app for iPhone

What a good data meter must do, and how Databit measures up point by point.

Read guide → Widgets

Data usage widget for iPhone

Put your remaining GB on the home screen with Databit's two widgets.

Read guide → Problems

Why is my data running out so fast?

The 7 most common causes of phantom drain and how to find yours with a daily chart.

Read guide → Math

How long does 5GB of data last?

A real-world table of what your bucket buys in video, music, social and browsing.

Read guide → Hotspot

Does hotspot use a lot of data?

Why your laptop devours your plan in minutes and how to tether without surprises.

Read guide → iPhone

Background data on iPhone

Which apps spend data while you're not looking and how to switch it off, step by step.

Read guide → Alerts

Data usage alerts on iPhone

iOS won't warn you before you run out. Here's how to get alerts at 20% and 10%.

Read guide → Apps

How much data do Spotify, YouTube and Netflix use?

Hourly usage for the most popular apps, with tables by playback quality.

Read guide → Savings

How to save mobile data on iPhone

10 settings that cut your usage today — and how to measure what you saved.

Read guide → Carriers

Check data usage on Verizon, AT&T and T-Mobile

How to check usage with each carrier, and why metering it yourself pays off.

Read guide →

Frequently asked questions

Everything people ask about mobile data usage and about Databit.

How do I check my data usage on iPhone?
You can see it in Settings > Cellular, but that counter never resets with your billing cycle. Databit shows your remaining data in real time, resets automatically on your billing day, and adds home-screen widgets. Learn more →
How do I know how much data I have left on my plan?
Enter your plan's GB and your billing date in Databit: it deducts usage measured byte by byte and shows how many GB remain and how many days are left — no carrier login needed. Learn more →
What's the best app to track mobile data on iPhone?
Databit is one of the top-rated: 4.6★ on the App Store. It meters LTE, 4G, 3G and EDGE with 1-byte precision, includes widgets, alerts and CSV export — one-time purchase, no subscription. Learn more →
Does Databit have a data usage widget for iPhone?
Yes, two: Databit and Databit Classic. They show GB used, GB remaining and days left on your home screen, refreshed about every 5 minutes. Learn more →
Why is my data running out so fast?
Usually high-quality video, background app refresh, cloud backups or hotspot use. Databit's daily usage chart shows exactly which day your usage spiked so you can find the culprit. Learn more →
How long does 5GB of data last?
Roughly 250 hours of browsing, ~70 hours of Spotify at normal quality, or just 5–10 hours of HD video. Databit shows your real daily usage so you know how long your bucket will truly last. Learn more →
Does personal hotspot use a lot of data?
Yes: a laptop on your hotspot can burn in minutes what your iPhone uses in a day (updates, cloud sync). Databit meters all traffic in real time, which makes it ideal for tethering. Learn more →
How do I turn off background data on iPhone?
Settings > General > Background App Refresh → set to Wi-Fi or off; add Low Data Mode in Settings > Cellular. Then check Databit's daily chart to confirm your usage actually dropped. Learn more →
Can I get an alert before I run out of data?
Yes. Databit sends notifications when your data drops below 20% and 10%, and again when it runs out — so you can slow down before overage charges kick in. Learn more →
How much data do Spotify, YouTube and Netflix use?
Per hour, roughly: Spotify 40–150 MB by quality; YouTube 260 MB (480p) to 1.5+ GB (1080p); Netflix 250 MB on saver to ~1 GB on high. Databit shows each session's real impact. Learn more →
How can I use less mobile data on iPhone?
Enable Low Data Mode, restrict background refresh, lower streaming quality and download on Wi-Fi. Databit lets you measure how many MB each change saves. Learn more →
Does Databit work with Verizon, AT&T and T-Mobile?
Yes. Databit measures traffic directly on your iPhone, so it works with every carrier and plan — Verizon, AT&T, T-Mobile, Mint, Visible and more, prepaid or postpaid. Learn more →
How accurate is Databit?
Databit uses your iPhone's 64-bit architecture to measure with up to 1-byte precision — the same resolution your carrier bills with. You can match their counting method (base 1000/1024) and choose whether uploads count. Learn more →
Does Databit require a subscription?
No. It's a one-time $1.99 purchase: no subscription, no ads, no in-app purchases. All advanced options included. See what's included →
Does Databit work with Apple Watch?
Yes. Databit supports Apple Watch (watchOS 4.0 or later), so you can check your remaining GB from your wrist. See what's included →
Can I export my data usage history?
Yes: Databit exports your full history as CSV — handy for spreadsheets or as evidence when disputing a charge with your carrier. Learn more →

Take control of your mobile data today

Join the users who stopped taking their carrier's word for it. Measure your usage byte by byte, get alerted in time, and find out if you could be paying less every month.

Download on the App Store

$1.99 · one-time purchase · iOS 11+, iPadOS, Apple Watch and visionOS