# Battery HD+ vs Sentry Saver

The clearest difference is update cadence: Sentry Saver at every 10 days against Battery HD+'s every 2 months. Battery HD+'s advantage is device support (4 vs 2). On price, ads, in-app purchases and iOS requirement 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, Sentry Saver every 10 days. The most recent releases landed on October 15, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Battery HD+ | Sentry Saver |
| --- | --- | --- |
| 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 | 74.4% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | Every 2 months | **Every 10 days** |
| Monetization | Ad-supported | — |
| Size | 62 MB | 33 MB |
| Requires iOS | **15.6** | 16.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [smalltech sarl](https://appshunter.io/developer/289934568) | [Yuan-Yi Chang](https://appshunter.io/developer/784363421) |

## 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


### Sentry Saver

[App page](https://appshunter.io/ios/app/sentry-saver/id6802057873)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Battery HD+ free?

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

### Is Sentry Saver free?

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

### Do Battery HD+ or Sentry Saver have ads?

Both Battery HD+ and Sentry Saver show ads.

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

Battery HD+ ships an update every 2 months, and Sentry Saver every 10 days. Most recently, Battery HD+ was updated on October 15, 2026 and Sentry Saver on October 5, 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.*