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

This app estimates your Apple Watch's remaining battery life, offering a more detailed forecast than just a percentage. It learns from your usage patterns and displays the estimated time directly on your watch face complication.

Highlights
  • Smart battery life calculation
  • Watch face complication display
  • Automatic 5% battery measurements
  • Adjusts for workouts and high drain
  • Long-term usage statistics
  • Measurement history
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 review sentiment: BatteryMonitorComplication at 100% against Battery Day's 25%. BatteryMonitorComplication also leads on rating (5.0 vs 4.0) and update cadence (weekly vs every 5 months). On ratings volume, ads, in-app purchases and monetization model 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.

ReceptionRating · Positive reviews · Number of ratings

BatteryMonitorComplication holds the better App Store score, 5.0 against 4.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 25% of Battery Day's written reviews are positive against 100% of BatteryMonitorComplication's.

UpkeepUpdate frequency

Battery Day ships an update every 5 months, BatteryMonitorComplication weekly. The most recent releases landed on November 3, 2026 and November 8, 2026 respectively.

Scorecard4 real differences · 6 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)5.0 (1 ratings) — better
Positive reviews25.0% of reviews100.0% of reviews — better
Number of ratings11
Update frequencyEvery 5 monthsWeekly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPad, Apple Watch — betteriPhone, Apple Watch
Requires iOS16.0 — better17.6
Further details — not scored
Size4 MB9 MB
Age rating4+4+
DeveloperEliott MorgenszternMichael Burch

Customer experience

Battery Day

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive25.0%
Neutral50.0%
Negative25.0%

BatteryMonitorComplication

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

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.
Which has better reviews, Battery Day or BatteryMonitorComplication?
BatteryMonitorComplication is rated higher. Battery Day averages 4.0 out of 5 from 1 ratings, while BatteryMonitorComplication averages 5.0 from 1 ratings.
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 weekly. Most recently, Battery Day was updated on November 3, 2026 and BatteryMonitorComplication on November 8, 2026.

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