Battery Tracker

Battery Tracker is more than just a battery percentage display. It's your personal battery coach, helping you understand your charging habits by tracking charge and discharge records, and discover ways to extend your battery's lifespan. ■ Real-time Battery Monitor • At-a-glance view of battery level, charging, discharging, and full charge status with a large gauge • Displays charging speed (%/h) and speed rating (Slow, Normal, Fast, Super Fast) • Shows estimated time to target charge and full charge • Displays discharge speed (%/h) while using the battery • Real-time chart of recent battery level changes • Provides battery status and charging tips for different charge levels • Shows current charging session's start time, charged amount, and elapsed time ■ Automatic Charge & Discharge Logging • Automatically records charging and battery usage as sessions • Summarizes start/end times, battery levels, and duration • Compares estimated vs. actual time to reach target charge • View battery level change graphs in session details • Name your chargers to differentiate them • Records persist even if you close and reopen the app; all data is stored only on your device ■ Battery Analysis (Premium) • Number of observed cycles calculated from charging records • Recent average charging speed (%/h) • Long-term charging speed trend graph for 7 days, 30 days, and all time • Compare named chargers/cables by charge amount per hour (%/h) • Estimated remaining usage time based on average discharge speed (Free) ■ Smart Notifications • Charging cable disconnected alert (Free) • Target charge level alert: Choose from 80, 85, 90, 95, 100% (Premium) • Low battery alert: Set your own threshold between 5-25% (Premium) • Do Not Disturb time settings, such as bedtime (Premium) ※ Notifications work while the app collects battery information. Due to iOS background policies, notifications may not be delivered immediately after the app is completely closed. ■ Charging Tools • 5-minute real-time extended chart • Custom charging plans tailored to your goals • Charging speed diagnostics and battery care guide • Premium users can use anytime; Free users can access for the current session by watching an ad ■ Data Export • Export charging records as CSV files (Excel compatible) • Export sessions and measurement samples as JSON files • Option to delete all saved records at once ■ Battery Tracker Premium • Remove all ads • Observed cycles, long-term charging speed trends, charger/cable speed comparison • Target charge level & low battery alerts, Do Not Disturb times • Instant access to 5-minute real-time chart, custom charging plans, charging speed diagnostics • Offers 1-month, 3-month, 6-month, 12-month auto-renewing subscriptions and a lifetime purchase option ■ Free Features • Real-time battery monitor, charging speed, estimated full charge time • Charge/discharge records and session details • Estimated remaining usage time • Cable disconnected alert • CSV & JSON export ■ Privacy Policy • Battery records and settings are stored only on your device. • We do not transmit or sell your charge/discharge records to servers. ■ Please Note • iOS only provides battery level and charging status information. Temperature, voltage, current, power (W), and battery maximum capacity/health cannot be displayed due to iOS policy, and this app does not offer these features. • Charging speed and estimated times are calculated estimates based on battery level changes and may vary depending on screen usage, heat generation, battery protection features, and cable/charger quality. • The more charging sessions you record, the more accurate the analysis becomes. • App-specific battery usage is not provided. - Terms of Use: https://drendrendren.com/terms?app=battery-tracker - Privacy Policy: https://drendrendren.com/privacy?app=battery-tracker Healthy charging habits start with good records.

• Added subscription plans • Added permanent storage for charge and discharge sessions • Added battery analysis feature • Added smart notifications • Added history analysis screen • Added export functionality • Added estimated time to target charge/discharge history • Improved battery measurement accuracy