# Battery Testing vs Battery Day

The clearest difference is price: Battery Testing at Free against Battery Day's $2.99. Battery Testing also leads on rating (4.5 vs 4.0) and update cadence (fortnightly vs every 5 months). Battery Day's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Battery Testing is free to download; Battery Day costs $2.99 up front. Battery Testing sells 1 one-off in-app purchase. Battery Day asks for nothing beyond the download.

Battery Testing holds the better App Store score, 4.5 against 4.0. That said, the two scores are not equally well evidenced: Battery Testing has 12K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 23% of Battery Testing's written reviews are positive against 33% of Battery Day's, so the app with the better star average is not the one people write more warmly about.

Battery Testing ships an update fortnightly, Battery Day every 5 months. The most recent releases landed on September 26, 2026 and September 3, 2026 respectively.

## The numbers

| Metric | Battery Testing | Battery Day |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[4.5 (12K ratings)](https://appshunter.io/ios/app/battery-testing/id887730232/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/battery-day/id6444242509/reviews) |
| Number of ratings | **12K** | 1 |
| Positive reviews | 23.3% of reviews | **33.3% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Fortnightly** | Every 5 months |
| Monetization | **Free with in-app purchases** | Paid |
| Size | 61 MB | 3 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple Watch |
| Age rating | 9+ | 4+ |
| Developer | [Binh Tran](https://appshunter.io/developer/1386007300) | [Eliott Morgensztern](https://appshunter.io/developer/1478504124) |

## What reviewers say

### Battery Testing

[App page](https://appshunter.io/ios/app/battery-testing/id887730232)

This app helps you understand your iOS device's battery performance. It identifies battery runtimes and provides data to help you determine if your battery needs replacement. Monitor your device's battery health and runtime with detailed insights.

**Highlights:** Monitor device runtimes, Estimated and raw battery data, Check battery health, Identify battery issues

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Advertisements | $1.99 | one-time |

**What reviewers like**

- 👍 Useful for testing battery health
- 🙂 Provides detailed battery information
- 💡 Helpful for refurbished/older devices

**What reviewers complain about**

- 🔋 Inaccurate battery health readings
- 📺 Excessive ads interrupting testing
- 🐛 Inconsistent and unreliable results
- 🤔 Unclear what the scores represent

**Reported bugs**

- App crashes or stops responding during testing
- Incorrect device information detection

**Requested features**

- Provide more detailed battery health metrics
- Improve accuracy of battery testing
- Reduce ad interruptions during testing


### Battery Day

[App page](https://appshunter.io/ios/app/battery-day/id6444242509)

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:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Battery Testing free?

Battery Testing is free to download, with in-app purchases available.

### Is Battery Day free?

Battery Day costs $2.99, with no in-app purchases.

### Which has better reviews, Battery Testing or Battery Day?

Battery Testing is rated higher. Battery Testing averages 4.5 out of 5 from 12K ratings, while Battery Day averages 4.0 from 1 ratings.

### Do Battery Testing or Battery Day have ads?

Battery Testing shows ads; Battery Day does not.

### Which is updated more often, Battery Testing or Battery Day?

Battery Testing ships an update fortnightly, and Battery Day every 5 months. Most recently, Battery Testing was updated on September 26, 2026 and Battery Day on September 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*