Comparison

NetUsageLog vs DataLeft

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

Head to head
About

NetUsageLog

Features
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NetUsageLog helps you stay on top of your Wi-Fi and cellular data, grouped by plans that match your carrier bill. β€’ Custom plans: fixed date range (trips/short term), monthly billing cycle (auto rollover), and per-day quota (eSIM daily cards reset every day). You can also "Restart counting now", handy for an eSIM you activate abroad β€’ Limit alerts: a notification at 80% and 100% of your cap β€’ Today at a glance: today's Wi-Fi and cellular usage and current speed on the main screen, plus a 7-day chart β€’ Widgets: small and medium on the Home Screen, plus circular, rectangular, and inline styles on the Lock Screen. Choose which plan each widget shows β€’ Multi-SIM / eSIM: cellular data tracked per line, with custom line names β€’ 17 languages: switch right inside the app About accuracy (an honest note): iOS doesn't let apps read usage in the background. Usage accrues only when the app records it (when you open the app, or when a Pro Shortcuts automation runs); usage in between is added at the next recording, spread across the days by elapsed time (an estimate), and alerts and widgets only update after a recording. If your phone restarts in the meantime, usage not yet recorded before the restart is lost, and the app tells you which time span was affected. Numbers are for reference β€” rely on your carrier bill. Per-app usage can't be measured (a system limitation). Privacy: your usage data stays on device, no VPN needed. No ads, no tracking. Upgrade to Pro (one-time purchase, unlocked forever): β€’ Forecast & alerts: see when you'll hit your limit, set custom alert thresholds, and get notified when you go over today's suggested usage β€’ Usage calibration: match the usage your carrier shows, so limits, alerts, and widgets use the calibrated number β€’ Shortcuts automation: record automatically at a set time every day (no need to open the app) for more accurate usage across days β€’ Advanced history: 30-day / 12-month trends, per-line analysis, and summaries β€’ Data backup: export / import full backups so you never lose data when switching phones, or export an Excel spreadsheet

About

DataLeft

Features
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How much data is left? DataLeft answers on your Lock Screen β€” before you ever open the app. A calm gauge shows what's left of your plan and how many days it needs to last. If you're burning through data faster than the days, you'll see it in one glance β€” and get a heads-up before it's a problem. AT A GLANCE β€’ Remaining data as a dual-ring gauge: data left vs days left β€’ Widgets for Home Screen, Lock Screen, and StandBy β€’ Alerts at 50 / 80 / 95% β€” helpful, never alarming BUILT FOR TRAVEL β€’ Add your travel eSIM before you fly β€’ Get a reminder to switch on arrival, and another before it expires β€’ Fixed-period plans with D-day countdown PRIVATE BY DESIGN β€’ No subscription. No server. No VPN. β€’ Nothing leaves your device β€” there is nothing to collect β€’ Works entirely offline DATALEFT PRO (one-time purchase) β€’ Multiple plans β€” home plan and travel eSIMs side by side β€’ Deep insights: 30-day trends, weekly rhythm, cellular vs WiFi β€’ Daily budget alerts β€’ Premium widgets Note: iOS provides device-wide network counters to apps. DataLeft shows accurate totals for your device; per-app breakdowns are not possible for any third-party app.

Screenshots

NetUsageLog4 screens
DataLeft4 screens

Verdict

The call

NetUsageLog and DataLeft are too close to call on the numbers: across 6 compared parameters β€” price, update cadence, ads and in-app purchases among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

Both are free to download. NetUsageLog sells 1 one-off in-app purchase and DataLeft sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

NetUsageLog ships an update every 8 days, DataLeft every 2 weeks. Both last shipped on November 5, 2026.

ScorecardNo meaningful differences
NetUsageLog versus DataLeft: the parameters behind the verdict, then further details
ParameterNetUsageLogDataLeft
PriceFreeFree
Update frequencyEvery 8 days β€” betterEvery 2 weeks
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPad β€” betteriPhone
Requires iOS17.0 β€” better18.0
Further details β€” not scored
Size4 MB1 MB
Age rating4+4+
DeveloperLiChuan LinOh Hyeon Kwon

In-app purchases

1 purchases

NetUsageLog

One-time1
  • Pro$2.99
1 purchases

DataLeft

One-time1
  • DataLeft Pro$2.99

Questions

Is NetUsageLog free?
NetUsageLog is free to download, with in-app purchases available.
Is DataLeft free?
DataLeft is free to download, with in-app purchases available.
Do NetUsageLog or DataLeft have ads?
Neither NetUsageLog nor DataLeft shows ads.
Which is updated more often, NetUsageLog or DataLeft?
NetUsageLog ships an update every 8 days, and DataLeft every 2 weeks. Most recently, NetUsageLog was updated on November 5, 2026 and DataLeft on November 5, 2026.

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