# Battery Day — Battery Prediction

> Estimates iPhone, iPad, and Apple Watch battery discharge time with widgets and charts. (iPhone/iPad app by Eliott Morgensztern.)

- Source: https://appshunter.io/ios/app/battery-day/id6444242509 (this page in markdown: same URL + `.md`)
- Developer: [Eliott Morgensztern](https://appshunter.io/developer/1478504124)
- Category: Utilities
- Price: $2.99
- Rating: 4.00/5 from 1 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 16.0 · 3 MB
- Languages: American English
- Released: 2022-11-07
- Data updated: 2026-07-22
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/battery-day/id6444242509/reviews.md

## What is Battery Day?

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.

## Key features

- 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

## Chart rankings

- #191 in Top Paid · Utilities (US App Store)

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/battery-day/id6444242509/reviews.md

### 1/5 — Unreliable predictions

*2024-10-10*

I had high hopes for this app. The UI design is very nice and it seems to function very well on both my iPhone and Apple Watch BUT the predictions for battery life are WAY off because it only looks at the power usage for the past 12 hours or so. Like take my Apple Watch Ultra for example. It can go about 2 days (48 hours) on a full charge. When I woke up this morning, it said I had 183 hours of battery life (because I had been sleeping and using hardly any power) and then after an hour and a half of being awake it now says 77 hours of battery remaining and this will continue to drop as the day goes on until I sleep and then it will shoot back up to 100+ hours. It’s useless. I have another battery tracking app called “Battery Grapher” which is way more basic, it doesn’t have the beautiful UI design of this app but the predictions are WAY more accurate because it actually learns your usage patterns and stores this data so that it can accurately predict your battery life. It’s so much more accurate and doesn’t have wild swings in its predictions because it’s actually learning instead of just estimating battery life based on your recent usage with no logic. I really hope the developer can fix this because it’s actually a really nice app but the one thing that it is designed to do, it does very poorly.

### 3/5 — more contrast needed, bad readability at the watch

*2022-12-06*

So fare a good app, but it‘s not good to read, every thing is to small and the background should be black and the text white.
Thanks

### 4/5 — Not 100% worth $3…

*2022-11-12*

So I’ve only used the app for about 20 minutes now, and I’ve noticed that the dead time gets cut off on the widget, it bothers me so much. It says “05:…”. So I know that’s probably fixable, and if this app ever gets big, that should be fixed before a ton of people rate badly.

UPDATE: Developer fixed the problem, responded to me (which was nice)

**Developer response:** Hello,
Thank you for your comment and for noticing this bug. It is now fixed with version 1.1.
Best regards

## Frequently asked questions about Battery Day

### How accurate is Battery Day's battery prediction?

Battery Day estimates your battery discharge time. The accuracy of these predictions relies on the app actively recording your battery usage, which requires it to be active as a widget.

### What devices does Battery Day support?

Battery Day is designed for Apple devices, specifically supporting the iPhone, iPad, and Apple Watch.

### How much does Battery Day cost?

Battery Day is a paid application, available for a one-time purchase of $2.99.

### Does Battery Day have ads?

No, Battery Day does not contain advertisements. It is a paid app without any ad interruptions.

### How often is Battery Day updated?

The latest version of Battery Day is 1.2, and it was last updated on August 19, 2023. This indicates regular updates to improve functionality and compatibility.

### What is the age rating for Battery Day?

Battery Day has an age rating of 4+, making it suitable for a wide range of users.

### What do users like about Battery Day?

Based on the limited rating data, users appreciate the app's ability to provide battery life estimates at a glance through its various widgets and charts.

### Can I see my battery history with Battery Day?

Yes, Battery Day allows you to visualize your battery level history with a chart that includes predictions and color-coded indications for battery usage.

## Version history (last 3 releases)

### 1.2 — 2023-08-19

Two new indicators:

• Time at 100%
Indicates battery discharge time when fully charged.

• Instant discharge time
Indicates time of your battery discharge based on current (not average) usage

### 1.1 — 2022-11-10

Text cut off on widget bug fixed.

### 1.0 — 2022-11-07

No release notes.

## Apps similar to Battery Day

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Battery Life Health Doctor Pro](https://appshunter.io/ios/app/battery-life-health-doctor-pro/id1180887748) | 4.4 (7,858) | Free | Utilities |
| [Charging Animation for Battery](https://appshunter.io/ios/app/charging-animation-for-battery/id1672934637) | 4.6 (967) | Free | Utilities |
| [Battery HD+](https://appshunter.io/ios/app/battery-hd-plus/id331453283) | 4.5 (2,596) | Free | Utilities |
| [Battery Life Status, Saver](https://appshunter.io/ios/app/battery-life-status-saver/id1562152284) | 4.0 (111) | Free | Utilities |
| [Battery Saver - Power Master](https://appshunter.io/ios/app/battery-saver-power-master/id1514077251) | 4.1 (230) | Free | Utilities |
| [Battery Testing](https://appshunter.io/ios/app/battery-testing/id887730232) | 4.5 (12,129) | Free | Utilities |

## More apps by Eliott Morgensztern

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- [Menu Builder](https://appshunter.io/ios/app/menu-builder/id1491717254)
- [Spraze](https://appshunter.io/ios/app/spraze/id1521801688)
- [Enigma cryptoMachine](https://appshunter.io/ios/app/enigma-cryptomachine/id1526629687)
- [A-Eye: Artificial Eye](https://appshunter.io/ios/app/a-eye-artificial-eye/id1528880705)

All apps by Eliott Morgensztern: https://appshunter.io/developer/1478504124

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*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 2026-07-22.*