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Battery Grapher

Battery Grapher

Intelligent Battery Tracker

154 ratings
145 reviews
🔧 Utilities
$1.99

Details

  • Released
  • Updated

Features

Developer

Joshua Bird
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Battery Grapher screenshot #1 for iPhone
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Battery Grapher screenshot #6 for iPhone
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Reviews summary↘︎
⭐145
Reviews↘︎
🔄6+ apps
Alternatives↘︎
❓5 answered
FAQ↘︎
📦~ in 2 months
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About

This app tracks your device's battery usage over time and uses your historical data to predict future battery levels. It's designed for low energy consumption and offers customizable notifications to help you manage charging times.

✓Historical battery level graphing
✓Smart future battery predictions
✓Low energy consumption design
✓Customizable battery notifications
✓Supports all complications and widget sizes
Show original description

What users say

Summarized from real user reviews of Battery Grapher. Based on 154 reviews and a 4.3/5 average, it highlights the 10 positives and 13 negatives reviewers mention most about this Utilities app.

Positive things

  • 💡Innovative battery prediction feature
  • ⌚Accurate Apple Watch complication display
  • 📊Detailed battery usage analytics and graphs
  • 🎯Learns usage patterns over time for better accuracy
  • 🔋Shows hours remaining instead of just percentage
  • 📱Works across iPhone, iPad, and Apple Watch
  • 💰One-time purchase with no subscriptions
  • 👍Clean, intuitive user interface design
  • ⚡Minimal resource consumption
  • 🎨Apple-like aesthetic and polish

Negative things

  • 🐛Complication fails to update frequently
  • ❌Widget missing or not appearing on installation
  • 🔴Inaccurate battery predictions, especially on newer devices
  • ⏰Updates only once per hour, causing stale data
  • 📉Accuracy takes weeks to improve on Apple Watch
  • 🚫Incompatible with watchOS 10/11 and newer devices
  • 💥App crashes or becomes non-functional
  • ⚠️Shows incorrect battery percentages after charging
  • 🔌Drains watch battery significantly
  • 😞Lacks developer support and responsiveness
  • 🔄Data resets unexpectedly after device repairs
  • 📊Graphs display incorrectly or inverted
  • ⏳Long initialization period required for data collection
See all reviews

What's New in Battery Grapher

2.0.7

September 22, 2026

fixing widgets

User reviews

Most RecentHighest RatedLowest Rated

Danke für das schnelle Update

Es ist einfach eine App die bei mir im Hintergrund läuft immer benutzt wird und ich nie drüber nachdenke. Bis ios27 ein Update benötigt hat.
Sie tut genau was sie soll und dafür liebe ich sie.
SedrahSedrah

Battery

Seit gestern keine Anzeige mehr
EZ70EZ70

Random?

I added the widget, but after a few months the app is not able to recognize charge-discharge cycles. It represents always a straight line going up and then down..
Dbio8Dbio8

No longer functional (fixed)

This is still advertised on the store yet its core requirement (having a widget for the app) is nonexistent. Update the app or remove it from the store.
Edit: although missing from the widget section when originally installed, it seems to now be present & I was successfully able to add it. Not sure what caused it to not show up at first.
Show more
drakes94drakes94

Die App ist der reine Absturz

Die App hat erst funktioniert jedoch zeigt sie mir die Batterie vom Telefon an und nicht von der Apple Watch oder anderen Geräten. Jetzt wo das Handy über Nacht vollständig geladen wurde geht die App nicht mal mehr auf. Die App ist eine Codeverschwendung und ihr Geld nicht wert.
MasterBerserkerMasterBerserker
See 140 more reviews

Developer apps

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User experience

🐞

Reported Bugs

18 issues

Widget not displaying on initial installation

Bug

Complication shows stale data and doesn't refresh automatically

Bug

Battery percentage stuck at incorrect values (e.g., 73%, 68%)

Bug

Accuracy status fluctuates rapidly between good and bad

Bug

Missing data warnings despite app being in dock

Bug

Charge-discharge cycle recognition fails (shows straight lines)

Bug

App crashes on iPad and certain iOS versions

Bug

Complication capped at 47-48 hours on Apple Watch Ultra

Bug

Incorrect battery readings after full charge

Bug

Notifications arrive delayed or not at all

Bug

App shows charging when device is not charging

Bug

Data loss after watch pairing/unpairing

Bug

Graphs display inverted or incorrect usage patterns

Bug

24-hour time format setting non-functional

Bug

Text cutoff on complication at bottom of watch face

Bug

Accuracy never improves beyond 'bad' status

Bug

App requires manual watch face switching to update

Bug

Predictions wildly inaccurate on newer Apple Watch models

Bug
✨

Requested Features

18 requests

Watch complication for Smart Stack (watchOS 10+)

Feature

Support for Apple Watch Ultra with correct 36-hour battery display

Feature

Low power mode detection and separate prediction profiles

Feature

Force refresh button in app

Feature

More frequent update intervals (user-configurable)

Feature

24-hour time format option

Feature

Charging time estimation while device is charging

Feature

Notifications for full charge completion

Feature

Battery percentage display in widgets

Feature

MacBook app version

Feature

App-specific battery drain identification

Feature

Historical data view (weekly/monthly)

Feature

Cross-device battery information (iPhone battery on Watch, etc.)

Feature

Landscape mode graph expansion

Feature

Multiple widget size options

Feature

Portuguese/Brazilian Portuguese localization

Feature

Manual dark mode toggle for iPhone

Feature

Watch complication for multiple stacks

Feature

FAQ

What does Battery Grapher do?

Battery Grapher graphs your historical battery levels and learns your habits to make smart predictions about your future battery levels. It helps you plan when to charge your device by showing you how much time you have left before your battery runs out.

How does Battery Grapher help extend battery life?

The app is developed with energy consumption in mind and has almost no impact on your device's battery life. It runs a background task only once an hour and does not require a network connection, keeping energy usage extremely low.

What kind of notifications can I set up?

You can set up customizable notifications to fit your needs. The app can alert you when your battery drops below a preset percentage or if you only have a certain number of hours left before your battery runs out. Note that this feature is currently only available on watchOS.

Is Battery Grapher compatible with widgets and complications?

Yes, Battery Grapher supports all complications and widget sizes. You can display information like hours before needing to charge or the current battery percentage directly on your watch face or home screen. These can be customized within the app.

Is Battery Grapher free to use?

Yes, based on the provided information, Battery Grapher is a free application. It does not have in-app purchases or advertisements, meaning you can use all its features without any cost.