# Battery Grapher — Intelligent Battery Tracker > Graphs historical battery levels, predicts future usage, and offers low-energy tracking. (iPhone/iPad app by Joshua Bird.) - Source: https://appshunter.io/ios/app/battery-grapher/id1498632956 (this page in markdown: same URL + `.md`) - Developer: [Joshua Bird](https://appshunter.io/developer/1549690243) - Category: Utilities - Price: $1.99 - Rating: 4.38/5 from 146 App Store ratings · 143 written reviews indexed - Age rating: 4+ - Requires: iOS 14.0 · 7 MB - Languages: English - Released: 2020-02-14 - Data updated: 2026-06-20 - Monetization: free - User reviews in markdown: https://appshunter.io/ios/app/battery-grapher/id1498632956/reviews.md ## What is Battery Grapher? Battery Grapher graphs your historical battery levels and learns your habits to make smart predictions on what your future battery levels will be. Developed specifically with energy consumption in mind, Battery Grapher has almost no impact on battery life. SMART PREDICTIONS Battery Grapher uses historical battery levels to intelligently predict what your battery level will be throughout the rest of the day, allowing you to plan when to next charge your device. The longer you have Battery Grapher installed, the more accurate future battery level predictions will be. LOW ENERGY CONSUMPTION Battery Grapher is made for people who want to extend the battery life, meaning that low energy usage is a priority. The app runs a background task only once an hour, and doesn't require a network connection, which keeps energy consumption extremely low. CUSTOMIZABLE NOTIFICATIONS Battery Grapher allows you to set notifications that fit your needs. You can get the app to notify you when you battery drops below a preset percentage, or if you only have a certain number of hours left before your battery runs out. (currently only available on watchOS) ALL COMPLICATIONS & WIDGET SIZES SUPPORTED Battery Grapher supports all complications & widget sizes. Complications can show hours before needing to charge, or battery %. Both complications and widgets are customizable from within the app. ## Key features - Historical battery level graphing - Smart future battery predictions - Low energy consumption design - Customizable battery notifications - Supports all complications and widget sizes ## What do users think of Battery Grapher? Overall sentiment: mixed **Pros** - 💡 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 **Cons** - 🐛 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 **Commonly reported bugs** - Widget not displaying on initial installation - Complication shows stale data and doesn't refresh automatically - Battery percentage stuck at incorrect values (e.g., 73%, 68%) - Accuracy status fluctuates rapidly between good and bad - Missing data warnings despite app being in dock - Charge-discharge cycle recognition fails (shows straight lines) - App crashes on iPad and certain iOS versions - Complication capped at 47-48 hours on Apple Watch Ultra - Incorrect battery readings after full charge - Notifications arrive delayed or not at all - App shows charging when device is not charging - Data loss after watch pairing/unpairing - Graphs display inverted or incorrect usage patterns - 24-hour time format setting non-functional - Text cutoff on complication at bottom of watch face - Accuracy never improves beyond 'bad' status - App requires manual watch face switching to update - Predictions wildly inaccurate on newer Apple Watch models **Most requested features** - Watch complication for Smart Stack (watchOS 10+) - Support for Apple Watch Ultra with correct 36-hour battery display - Low power mode detection and separate prediction profiles - Force refresh button in app - More frequent update intervals (user-configurable) - 24-hour time format option - Charging time estimation while device is charging - Notifications for full charge completion - Battery percentage display in widgets - MacBook app version - App-specific battery drain identification - Historical data view (weekly/monthly) - Cross-device battery information (iPhone battery on Watch, etc.) - Landscape mode graph expansion - Multiple widget size options - Portuguese/Brazilian Portuguese localization - Manual dark mode toggle for iPhone - Watch complication for multiple stacks ## Recent user reviews (10 of 143) All indexed reviews: https://appshunter.io/ios/app/battery-grapher/id1498632956/reviews.md ### 2/5 — Random? *2026-02-14, version 2.0.5* 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.. ### 4/5 — No longer functional (fixed) *2026-01-30* 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. ### 1/5 — Die App ist der reine Absturz *2025-04-13* 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. ### 5/5 — Very accurate and very worth it *2025-03-20, version 2.0.5* Very accurate, I didn’t know an app could get this much data from Apple’s locked down battery telemetry! ### 5/5 — funciona mal *2025-03-12, version 2.0.5* la aplicacion es buenisima y bonita lastima que no la actualicen no funciona muy bien animo desarroyador actualiza ### 1/5 — Nic co warte jest pieniędzy ! *2025-01-29, version 2.0.5* Raczej nie polecam bo nie dowiemy się zbyt wiele od aplikacji o stanie swojej baterii lub jak ją ładować. Zauważyłem że jednak aplikacja pobiera z zegarka znaczną ilość energii co powoduje że on działa znacznie krócej. Poza tym co najgorsze nie pokazuje aktualnego stanu naładowania baterii. Gdy miałem 20 % zacząłem ładować zegarek i gdy miałem już 100 % bo pojawił się sygnał dźwiękowy z zegarka, zdjąłem go i zacząłem nosić na ręku. Gdy spojrzałem na tarczę program Battery Grapfher pokazywał nie 100 % naładowania a 19% tak jakby nawet nastąpił spadek energii. Po kilku minutach i kliknieciach w zegarek nastąpiło odświeżenie danych i pojawiło się 100 % .. Czyli aplikacja nie jest intuicyjna i nie działa dobrze więc nawet te kilka złotych nie jest warte by ją kupić. Zdecydowanie odradzam. W iPhone także zbyt wielu wykresów lub informacji nie uzyskamy. Umówmy się jeśli będziemy ładować baterie pomiędzy 20-80 % to będzie jej kondycja wydłużona. Żadna aplikacja nie pomoże w tym nam… ### 1/5 — 全然動かない *2024-12-21* 購入したけど、どの値も変わらない。なにこれ？ 時間だけしかあってない。最悪。 金返せ ### 5/5 — Won’t open on iPad (iPadOS 17.7.3) *2024-12-12, version 2.0.5* Battery Grapher won’t open on my (very old) iPad Pro 10.5in, but widget still updates. Just a small quirk that doesn’t affect the usability of the app all too much Your app is awesome btw!! ### 5/5 — Great Widget! *2024-11-01* It's very accurate throughout my Apple ecosystem! Please add Watch complication for stacks, that would be very handy. ### 3/5 — Problem on Ultra 2 watch *2024-10-23, version 2.0.5* On Apple Watch Ultra 2, it is showing a maximum of 18h battery life for a battery at 100%. For this watch Apple is announcing 36h for a full charge. ## Frequently asked questions about Battery Grapher ### 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. ## Version history (last 5 releases) ### 2.0.5 — 2023-02-01 - Fixed bug where Apple Watch complication would not show a predicted battery life of greater than 48h ### 2.0.4 — 2021-09-17 This app has been updated by Apple to display the Apple Watch app icon. - Added new Usage Habits graph! ### 2.0.2 — 2021-01-02 - Description updates ### 2.0.1 — 2020-09-18 - Bug fixes - New App Store screenshots ### 2.0.0 — 2020-09-17 - iPhone and iPad app is released! Free for everyone who purchased the watchOS app - Added iOS 14 widget support - WatchOS app now has more detailed data and smoother scrolling - WatchOS app bug fixes ## Apps similar to Battery Grapher | App | Rating | Price | Category | | --- | --- | --- | --- | | [Battery Widget: CPU x Monitor](https://appshunter.io/ios/app/battery-widget-cpu-x-monitor/id1571029388) | 4.4 (1,263) | Free | Utilities | | [Battery HD+](https://appshunter.io/ios/app/battery-hd-plus/id331453283) | 4.5 (2,596) | Free | Utilities | | [Battery Life - check runtimes](https://appshunter.io/ios/app/battery-life-check-runtimes/id1080930585) | 4.6 (33,031) | Free | Utilities | | [Battery saver - wifi analyzer](https://appshunter.io/ios/app/battery-saver-wifi-analyzer/id1178712789) | 4.2 (192) | Free | Utilities | | [Battery Widget 2.0](https://appshunter.io/ios/app/battery-widget-20/id1561658854) | 3.9 (47) | $7.99 | Utilities | | [Battery Life Health Doctor Pro](https://appshunter.io/ios/app/battery-life-health-doctor-pro/id1180887748) | 4.4 (7,719) | Free | Utilities | ## More apps by Joshua Bird - [Word Swipe for Watch](https://appshunter.io/ios/app/word-swipe-for-watch/id1497264233) All apps by Joshua Bird: https://appshunter.io/developer/1549690243 ## Related topics [kedron lfp battery](https://appshunter.io/ios/topics/kedron-lfp-battery) --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-20.*