# Battery HD+ vs UMuseum

The clearest difference is ads: UMuseum at none against Battery HD+'s shown. UMuseum also leads on review sentiment (100% vs 75%) and monetization model (free vs ad-supported). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Battery HD+ ships an update every 2 months, UMuseum every 3 months. The most recent releases landed on September 28, 2026 and June 10, 2026 respectively.

## The numbers

| Metric | Battery HD+ | UMuseum |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (2.7K ratings)](https://appshunter.io/ios/app/battery-hd-plus/id331453283/reviews)** | — |
| Number of ratings | **2.7K** | — |
| Positive reviews | 74.6% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Ad-supported | **Free** |
| Size | 62 MB | 50 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [smalltech sarl](https://appshunter.io/developer/289934568) | [轲 赵](https://appshunter.io/developer/1478255786) |

## What reviewers say

### Battery HD+

[App page](https://appshunter.io/ios/app/battery-hd-plus/id331453283)

This app provides a detailed battery monitoring experience for your phone or tablet. It offers calibration features for increased accuracy and displays estimated usage times for various activities, from listening to music to GPS navigation.  It also includes charge alerts and a widget for quick access to information.

**Highlights:** Battery calibration, Usage time estimates, Charge alerts, Widget support, Detailed usage charts

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Accurate battery information
- 👍 Helpful for devices without battery percentage
- 🔋 Provides battery usage estimates
- 👍 Easy to understand interface
- 👍 Customizable battery display

**What reviewers complain about**

- 🐛 Inaccurate battery level notifications
- 🐛 Calibration issues and bugs
- 🔋 Battery drain issues after using the app
- 💸 Ads in free version
- 🐛 Widget not working as expected

**Reported bugs**

- Calibration never completes
- Battery level not detected
- Incorrect battery percentage displayed

**Requested features**

- Battery health monitoring
- Battery usage by app breakdown
- Improved charging notifications
- Apple Watch support


### UMuseum

[App page](https://appshunter.io/ios/app/umuseum/id1478255787)

Explore university museums and collections globally through a comprehensive database. This app connects enthusiasts with cultural institutions, fostering a worldwide community around academic heritage.

**Highlights:** Global museum database, University collection access, Community building, Increased visibility for museums, Portable device accessibility

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Battery HD+ free?

Battery HD+ is free to download, with no in-app purchases.

### Is UMuseum free?

UMuseum is free to download, with no in-app purchases.

### Do Battery HD+ or UMuseum have ads?

Battery HD+ shows ads; UMuseum does not.

### Which is updated more often, Battery HD+ or UMuseum?

Battery HD+ ships an update every 2 months, and UMuseum every 3 months. Most recently, Battery HD+ was updated on September 28, 2026 and UMuseum on June 10, 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.*