# remove duplicate contacts pro vs Calendar AI Sync

The clearest difference is in-app purchases: Calendar AI Sync at none against remove duplicate contacts pro's 3. Calendar AI Sync also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. remove duplicate contacts pro sells 3 in-app purchases, starting at $0.99 per month. Calendar AI Sync asks for nothing beyond the download.

remove duplicate contacts pro ships an update monthly, Calendar AI Sync every 4 weeks. The most recent releases landed on September 19, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | remove duplicate contacts pro | Calendar AI Sync |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (49 ratings)](https://appshunter.io/ios/app/remove-duplicate-contacts-pro/id1630503689/reviews)** | — |
| Number of ratings | **49** | — |
| Positive reviews | 75.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Monthly | **Every 4 weeks** |
| Monetization | Free with in-app purchases | — |
| Size | 7 MB | 24 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Sounak Sarkar](https://appshunter.io/developer/1053781571) | [Yogesh Aher](https://appshunter.io/developer/1618947576) |

## What reviewers say

### remove duplicate contacts pro

[App page](https://appshunter.io/ios/app/remove-duplicate-contacts-pro/id1630503689)

Effortlessly manage your address book by identifying, merging, and removing duplicate contacts. This app uses intelligent algorithms to scan your entire database, offering customizable merge rules and batch processing for a streamlined contact list. It prioritizes privacy by operating locally on your device.

**Highlights:** Intelligent duplicate detection, Merge with precision, Customizable merge rules, Backup and restore contacts, Batch processing, Contact preview, Automatic scans

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Monthly | $0.99 | per month |
| Premium Yearly | $5.99 | per year |
| Remove all advertisements | Free | one-time |


### Calendar AI Sync

[App page](https://appshunter.io/ios/app/calendar-ai-sync/id6776671149)

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

**In-app purchases:** none


## Frequently asked questions

### Is remove duplicate contacts pro free?

remove duplicate contacts pro is free to download, with in-app purchases available.

### Is Calendar AI Sync free?

Calendar AI Sync is free to download, with no in-app purchases.

### Do remove duplicate contacts pro or Calendar AI Sync have ads?

remove duplicate contacts pro shows ads; Calendar AI Sync does not.

### Which is updated more often, remove duplicate contacts pro or Calendar AI Sync?

remove duplicate contacts pro ships an update monthly, and Calendar AI Sync every 4 weeks. Most recently, remove duplicate contacts pro was updated on September 19, 2026 and Calendar AI Sync on September 30, 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.*