# Contacts Duster vs Calkillator

The clearest difference is update cadence: Contacts Duster at weekly against Calkillator's monthly. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Contacts Duster sells 8 in-app purchases, starting at $2.99 per month and Calkillator sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Contacts Duster ships an update weekly, Calkillator monthly. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Contacts Duster | Calkillator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (23 ratings)](https://appshunter.io/ios/app/contacts-duster-cleaner/id375973177/reviews)** | — |
| Number of ratings | **23** | — |
| Positive reviews | 51.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Weekly** | Monthly |
| Monetization | Free with in-app purchases | — |
| Size | 11 MB | 25 MB |
| Requires iOS | 17.0 | **16.6** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [MyClickapps.com LLC](https://appshunter.io/developer/303611122) | [221B STUDIO](https://appshunter.io/developer/1896370551) |

## What reviewers say

### Contacts Duster

[App page](https://appshunter.io/ios/app/contacts-duster-cleaner/id375973177)

This app helps you clean up your iPhone or iPad contacts by detecting and merging duplicate entries. It offers features to manage your address book efficiently, including cleaning 'zombies' and visualizing your contact data. Cloud backup is available via in-app purchase.

**Highlights:** Detect and merge duplicate contacts, Clean 'zombie' contacts, In-app backup and restore, Visualize address book with pie graph, Cloud backup of contacts, Localized in 12 languages

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

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Cloud Backup Monthly | $2.99 | per month |
| Cloud Backup Yearly | $19.99 | per year |
| Groups Manager | $0.99 | one-time |
| Pro | $0.99 | one-time |
| Auto Dust | $1.99 | one-time |
| Pro | $2.99 | one-time |
| Pro upgrade | $4.99 | one-time |
| Cloud Backup Lifetime | $19.99 | one-time |

**What reviewers like**

- 🚀 Efficient contact cleaning
- 👍 Useful for organizing contacts
- 🔒 Backup and sync features
- 👍 Simple and easy to use

**What reviewers complain about**

- 🐛 Crashes and bugs
- 💰 Paywall for full functionality
- 🤔 Unclear feature limitations in free version
- 🤷‍♀️ Inconsistent performance

**Reported bugs**

- Crashes during contact cleaning
- Deletes valid contacts
- Fails to detect all duplicate contacts
- Syncing issues with iCloud and other services

**Requested features**

- Allow merging of contact groups
- Provide more granular control over contact management
- Improve duplicate detection accuracy
- Add support for more cloud storage services


### Calkillator

[App page](https://appshunter.io/ios/app/calkillator/id6787863795)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Calkillator Minions | $0.99 | one-time |


## Frequently asked questions

### Is Contacts Duster free?

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

### Is Calkillator free?

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

### Do Contacts Duster or Calkillator have ads?

Neither Contacts Duster nor Calkillator shows ads.

### Which is updated more often, Contacts Duster or Calkillator?

Contacts Duster ships an update weekly, and Calkillator monthly. Most recently, Contacts Duster was updated on November 6, 2026 and Calkillator on November 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.*