# Backup Contacts Cleaner vs UDH

The clearest difference is in-app purchases: UDH at none against Backup Contacts Cleaner's 1. UDH also leads on ads (none vs shown) and update cadence (every 2 days vs every 3 months). On price, device support and iOS requirement there is nothing between them.

Both are free to download. Backup Contacts Cleaner sells 1 one-off in-app purchase. UDH asks for nothing beyond the download.

Backup Contacts Cleaner ships an update every 3 months, UDH every 2 days. The most recent releases landed on October 23, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Backup Contacts Cleaner | UDH |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (517 ratings)](https://appshunter.io/ios/app/backup-contacts-cleaner/id1234917118/reviews)** | — |
| Number of ratings | **517** | — |
| Positive reviews | 70.4% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 48 MB | 60 MB |
| Requires iOS | **14.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Duong Bac](https://appshunter.io/developer/1090685560) | [United Diamond Technology UD-Tech](https://appshunter.io/developer/1636689869) |

## What reviewers say

### Backup Contacts Cleaner

[App page](https://appshunter.io/ios/app/backup-contacts-cleaner/id1234917118)

Safely back up, restore, and transfer all your phone contacts with a single tap. This secure and fast application ensures your contacts are saved even if your device is lost or broken. Easily manage your address book and keep your important information protected.

**Highlights:** Safe & secure contact backup, One-tap contact transfer, Manual sync option, Small in-app size, Easy contact saving

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |

**What reviewers like**

- 👍 Easy to use and understand
- 🚀 Fast and efficient backup
- ✅ Works well for contact backup
- ✨ Solves iCloud sync issues
- 💰 Free and supports developers

**What reviewers complain about**

- 🐛 App crashes frequently
- 🐛 Merging contacts causes crashes
- 🐛 Data loss after merging
- 🐛 Contacts merged incorrectly
- 🐛 Wiped out addresses and notes

**Reported bugs**

- App crashes when merging contacts
- Contacts are lost or deleted
- Addresses and notes are wiped out
- Backup files cannot be sent to email or dropbox
- App makes duplicate contacts

**Requested features**

- Support for more languages
- Fix CSV import issues with line endings
- Improve export functionality to email/dropbox
- Better handling of contact merging
- Fix the issue with sending only a few contacts


### UDH

[App page](https://appshunter.io/ios/app/udh/id6747332204)

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

**In-app purchases:** none


## Frequently asked questions

### Is Backup Contacts Cleaner free?

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

### Is UDH free?

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

### Do Backup Contacts Cleaner or UDH have ads?

Backup Contacts Cleaner shows ads; UDH does not.

### Which is updated more often, Backup Contacts Cleaner or UDH?

Backup Contacts Cleaner ships an update every 3 months, and UDH every 2 days. Most recently, Backup Contacts Cleaner was updated on October 23, 2026 and UDH on October 5, 2026.

---

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