# Contacts Duster Pro vs SmartLock N

The clearest difference is price: SmartLock N at Free against Contacts Duster Pro's $2.99. SmartLock N also leads on in-app purchases (none vs 3) and iOS requirement (11.0 vs 17.0). Contacts Duster Pro's advantage is update cadence (weekly vs every 3 months). On ads and device support there is nothing between them.

SmartLock N is free to download; Contacts Duster Pro costs $2.99 up front. Contacts Duster Pro sells 3 in-app purchases, starting at $2.99 per month. SmartLock N asks for nothing beyond the download.

Contacts Duster Pro ships an update weekly, SmartLock N every 3 months. The most recent releases landed on September 24, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | Contacts Duster Pro | SmartLock N |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[2.8 (37 ratings)](https://appshunter.io/ios/app/contacts-duster-pro-clean/id504230126/reviews)** | — |
| Number of ratings | **37** | — |
| Positive reviews | 56.2% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Weekly** | Every 3 months |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 9 MB |
| Requires iOS | 17.0 | **11.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [MyClickapps.com LLC](https://appshunter.io/developer/303611122) | [BIO-key HK](https://appshunter.io/developer/1249294306) |

## What reviewers say

### 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


### SmartLock N

[App page](https://appshunter.io/ios/app/smartlock-n/id1512759883)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Contacts Duster Pro free?

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

### Is SmartLock N free?

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

### Do Contacts Duster Pro or SmartLock N have ads?

Neither Contacts Duster Pro nor SmartLock N shows ads.

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

Contacts Duster Pro ships an update weekly, and SmartLock N every 3 months. Most recently, Contacts Duster Pro was updated on September 24, 2026 and SmartLock N on September 19, 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.*