Calculator on Watch vs BatteryMonitorComplication
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Calculator on Watch
A straightforward and functional calculator designed for smartwatches. It offers a simple, user-friendly interface for quick calculations directly on your wrist.
- Simple interface
- Easy to use
- Highly functional
- Beautiful design
- On-wrist calculations
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The best smart calculator on Apple Watch! It is simple, easy to use, highly function and beautiful!!
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.
- Smart battery life calculation
- Watch face complication display
- Automatic 5% battery measurements
- Adjusts for workouts and high drain
- Long-term usage statistics
- Measurement history
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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
Verdict
The clearest difference is review sentiment: BatteryMonitorComplication at 100% against Calculator on Watch's 25%. BatteryMonitorComplication also leads on rating (5.0 vs 4.0) and update cadence (weekly vs every 17 months). Calculator on Watch's advantage is iOS requirement (12.0 vs 17.6). On price, ratings volume, ads and in-app purchases 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
Calculator on Watch costs $0.99 and BatteryMonitorComplication $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.
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 Calculator on Watch's written reviews are positive against 100% of BatteryMonitorComplication's.
Calculator on Watch ships an update every 17 months, BatteryMonitorComplication weekly. The most recent releases landed on November 1, 2026 and October 28, 2026 respectively.
| Parameter | Calculator on Watch | BatteryMonitorComplication |
|---|---|---|
| Price | $0.99 | $0.99 |
| Rating | 4.0 (1 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 25.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 1 | 1 |
| Update frequency | Every 17 months | Weekly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Paid |
| Devices | iPhone, iPod, Apple Watch — better | iPhone, Apple Watch |
| Requires iOS | 12.0 — better | 17.6 |
| Further details — not scored | ||
| Size | 17 MB | 9 MB |
| Age rating | 4+ | 4+ |
| Developer | Sing Fu Chan | Michael Burch |
Customer experience
Calculator on Watch
BatteryMonitorComplication
In-app purchases
Calculator on Watch
No in-app purchases
BatteryMonitorComplication
No in-app purchases
Questions
Is Calculator on Watch free?
Is BatteryMonitorComplication free?
Which has better reviews, Calculator on Watch or BatteryMonitorComplication?
Do Calculator on Watch or BatteryMonitorComplication have ads?
Which is updated more often, Calculator on Watch or BatteryMonitorComplication?
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