DatabitThe best data usage app for iPhone
A good data usage app for iPhone must measure in real time, reset itself with your billing cycle, warn you before you run out, and work with any carrier. Databit does all four — with 1-byte precision, widgets, alerts and CSV export, rated 4.6★, for a one-time $1.99 with no subscription.
The checklist for a data usage tracker
- Real-time measurement — not carrier-portal numbers that lag by hours.
- Automatic reset on your billing day; manual counters get abandoned within weeks.
- Low-data alerts — measuring is pointless if you learn about overages after they're billed.
- Widgets, so checking costs nothing.
- Any carrier, any plan, prepaid or postpaid.
- Configurable precision: carriers count in base 1000 or 1024 bytes per KB; your meter should match.
Databit, point by point
| Requirement | Databit |
|---|---|
| Real time | ✔ Continuous metering over LTE, 4G, 3G, EDGE |
| Auto reset | ✔ On your billing day, every cycle |
| Alerts | ✔ At 20%, at 10%, and when data runs out |
| Widgets | ✔ Two styles, refreshed about every 5 minutes |
| Carriers | ✔ All of them: Verizon, AT&T, T-Mobile, MVNOs… |
| Precision | ✔ 1 byte; base 1000/1024; optional upload counting |
| Extras | ✔ Daily chart, CSV export, Apple Watch, hotspot-friendly |
| Price | ✔ $1.99 once — no subscription, no ads |
How accurate is it?
Databit leverages your device's 64-bit architecture to register traffic with up to 1-byte precision — the same resolution your carrier bills with. Advanced options let you choose whether a KB is 1000 or 1024 bytes and whether uploads count, so your number and your carrier's speak the same language.
What no app can do (told straight)
Apple doesn't allow any third-party app to break usage down per app — that lives only in Settings > Cellular. Any app promising otherwise is overselling. Use Databit for the real-time total, cycle and alerts; use the Settings list to identify the culprit app.
Track your data usage in real time
Databit shows how many GB you have left, alerts you at 20% and 10%, and resets automatically on your billing day. One-time purchase, no subscription.
Get Databit — 4.6★ on the App Store