Comparison

Battery Day vs BatteryMonitorComplication

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

Head to head
About

Battery Day

This app provides an at-a-glance estimate of your device's battery discharge time. It offers various widgets, gauges, and charts to visualize battery level history and predict remaining usage. The app requires active widget usage to record battery consumption.

Highlights
  • Battery discharge time estimation
  • Variety of widgets, gauges, and charts
  • Battery level history visualization
  • Battery usage prediction
  • Color-coded battery usage indication
  • Requires active widget for data recording
Features
Read full description

Battery Day estimates the time of your battery discharge on your iPhone, iPad and Apple Watch. Get your battery remaining time at a glance thanks to a variety of widgets, gauges and charts. Visualize your battery level history with a chart including battery level prediction and color for battery usage indication. In order for the app to record your battery usage, Battery Day must be active as a widget.

About

BatteryMonitorComplication

Features
Read full description

BatteryMonitor – Battery life for your Apple Watch BatteryMonitor estimates how long your Apple Watch will last — in the app and as a watch face complication. KEY FEATURES • Smart calculation – learns from your charge and discharge cycles • Automatic measurements – every 5% battery change • Day, night, and workout drain – different discharge rates • Complication – remaining time on your watch face • Date & Weekday – shows date until threshold is reached, then remaining time. • Statistics – long-term cycles and usage overview • Measurement history – all values including discharge rates WORKOUTS & HIGH DRAIN • Adjusts the display during workouts or high activity • Workout badge on the circular complication • Optional push prompt to improve statistics HIGHLIGHTS • Accounts for recent charging • For Apple Watch Series 6–12, SE, and Ultra • Shows estimated time until battery is empty • Multiple complication sizes WHY BATTERYMONITOR? After just a few days, you get a much more useful forecast than a percentage alone — especially with the complication enabled. IMPORTANT Accuracy improves with regular use. Measurements happen in 5% steps; exact battery readings are limited by the system, so updates may feel slightly delayed. Questions or feedback? Use App Support.

Screenshots

Battery Day4 screens
BatteryMonitorComplication3 screens

Verdict

The call

The clearest difference is update cadence: BatteryMonitorComplication at every 6 days against Battery Day's every 5 months. BatteryMonitorComplication also leads on price ($0.99 vs $2.99). On ads, in-app purchases, device support and iOS requirement there is nothing between them.

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

CostPrice · In-app purchases · Ads · Monetization

Battery Day costs $2.99 and BatteryMonitorComplication $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Battery Day ships an update every 5 months, BatteryMonitorComplication every 6 days. The most recent releases landed on October 10, 2026 and October 7, 2026 respectively.

Scorecard2 real differences · 8 level
Battery Day versus BatteryMonitorComplication: the parameters behind the verdict, then further details
ParameterBattery DayBatteryMonitorComplication
Price$2.99$0.99 — better
Rating4.0 (1 ratings) — better—
Positive reviews33.3% of reviews—
Number of ratings1 — better—
Update frequencyEvery 5 monthsEvery 6 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, Apple Watch — betteriPhone, Apple Watch
Requires iOS16.0 — better17.6
Further details — not scored
Size3 MB9 MB
Age rating4+4+
DeveloperEliott MorgenszternMichael Burch

In-app purchases

None

Battery Day

No in-app purchases

None

BatteryMonitorComplication

No in-app purchases

Questions

Is Battery Day free?
Battery Day costs $2.99, with no in-app purchases.
Is BatteryMonitorComplication free?
BatteryMonitorComplication costs $0.99, with no in-app purchases.
Do Battery Day or BatteryMonitorComplication have ads?
Neither Battery Day nor BatteryMonitorComplication shows ads.
Which is updated more often, Battery Day or BatteryMonitorComplication?
Battery Day ships an update every 5 months, and BatteryMonitorComplication every 6 days. Most recently, Battery Day was updated on October 10, 2026 and BatteryMonitorComplication on October 7, 2026.

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