NetUsageLog vs DataLeft
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
NetUsageLog
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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
DataLeft
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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
Verdict
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
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.
NetUsageLog ships an update every 8 days, DataLeft every 2 weeks. Both last shipped on November 5, 2026.
| Parameter | NetUsageLog | DataLeft |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 8 days β better | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone, iPad β better | iPhone |
| Requires iOS | 17.0 β better | 18.0 |
| Further details β not scored | ||
| Size | 4 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | LiChuan Lin | Oh Hyeon Kwon |
In-app purchases
NetUsageLog
- Pro$2.99
DataLeft
- DataLeft Pro$2.99
Questions
Is NetUsageLog free?
Is DataLeft free?
Do NetUsageLog or DataLeft have ads?
Which is updated more often, NetUsageLog or DataLeft?
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