# Battery vs Contacts Duster Pro

The clearest difference is price: Battery at Free against Contacts Duster Pro's $2.99. Battery also leads on rating (3.5 vs 2.8) and iOS requirement (6.0 vs 17.0). Contacts Duster Pro's advantage is review sentiment (56% vs 29%) and update cadence (weekly vs monthly). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

Battery is free to download; Contacts Duster Pro costs $2.99 up front. Battery sells 1 one-off in-app purchase and Contacts Duster Pro sells 3 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

Battery holds the better App Store score, 3.5 against 2.8. Both are backed by a comparable volume of ratings — 13 and 38 respectively. Written reviews complicate that: 29% of Battery's written reviews are positive against 56% of Contacts Duster Pro's, so the app with the better star average is not the one people write more warmly about.

Battery ships an update monthly, Contacts Duster Pro weekly. The most recent releases landed on October 22, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Battery | Contacts Duster Pro |
| --- | --- | --- |
| Price | **Free** | $2.99 |
| Rating | **[3.5 (13 ratings)](https://appshunter.io/ios/app/battery/id398981675/reviews)** | [2.8 (38 ratings)](https://appshunter.io/ios/app/contacts-duster-pro-clean/id504230126/reviews) |
| Number of ratings | 13 | **38** |
| Positive reviews | 29.4% of reviews | **55.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Monthly | **Weekly** |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 4 MB | 11 MB |
| Requires iOS | **6.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Orgajja Co Ltd](https://appshunter.io/developer/368955015) | [MyClickapps.com LLC](https://appshunter.io/developer/303611122) |

## What reviewers say

### Battery

[App page](https://appshunter.io/ios/app/battery/id398981675)

Explore the fundamental principles of electrochemical cells and their conversion of chemical to electrical energy. Understand the distinction between disposable primary batteries and rechargeable secondary batteries, and their diverse applications.

**Highlights:** Electrochemical cell principles, Chemical to electrical energy conversion, Primary (disposable) batteries, Secondary (rechargeable) batteries, Applications of batteries

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade | $0.99 | one-time |

**What reviewers like**

- 🔋 Basic battery info provided
- 👍 Simple and not elaborate
- 👍 Useful for iPod Touch
- 👍 Accurate battery percentage
- 👍 Helpful for knowing battery level

**What reviewers complain about**

- 👎 Very basic information
- 👎 Forced to download other apps
- 👎 Too many ads
- 👎 Inaccurate battery percentage
- 👎 App crashes frequently

**Reported bugs**

- Crashes on opening
- Opens ads and redirects
- Lagging out device
- Cannot use all functions without download
- Doesn't open

**Requested features**

- Remove ads
- Upgrade option to remove ads
- Add more functions
- Remove slot machine game prompt
- Fix crashing issues


### Contacts Duster Pro

[App page](https://appshunter.io/ios/app/contacts-duster-pro-clean/id504230126)

This app helps you organize your contacts by detecting and merging duplicate entries like names, emails, and phone numbers. It also cleans up orphaned data and offers cloud backup for your address book.

**Highlights:** Detect and merge duplicate contacts, Clean zombie contacts, In-app backup and restore, Cloud backup (in-app purchase), Visualize address book with pie graph, Manual merge of duplicates

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cloud Backup Monthly | $2.99 | per month |
| Cloud Backup Yearly | $19.99 | per year |
| Cloud Back up Lifetime | $19.99 | one-time |

**What reviewers like**

- 🚀 Fast and efficient
- 💡 Useful contact management features
- 👍 Easy to use

**What reviewers complain about**

- 🐛 Crashes and bugs
- 💰 Expensive for a one-time use
- 🔓 Security and privacy concerns
- 🔌 Unreliable backup and restore functionality

**Reported bugs**

- Crashes and freezes
- Deleting or losing contacts
- Incompatibility with newer iOS versions

**Requested features**

- Improved contact merging and deduplication
- More customization options
- Better backup and restore capabilities


## Frequently asked questions

### Is Battery free?

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

### Is Contacts Duster Pro free?

Contacts Duster Pro costs $2.99, and also offers in-app purchases.

### Which has better reviews, Battery or Contacts Duster Pro?

Battery is rated higher. Battery averages 3.5 out of 5 from 13 ratings, while Contacts Duster Pro averages 2.8 from 38 ratings.

### Do Battery or Contacts Duster Pro have ads?

Neither Battery nor Contacts Duster Pro shows ads.

### Which is updated more often, Battery or Contacts Duster Pro?

Battery ships an update monthly, and Contacts Duster Pro weekly. Most recently, Battery was updated on October 22, 2026 and Contacts Duster Pro on October 23, 2026.

---

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