# Clean & Clear Duplicate Master Contact Cleaner - Monitor & Check Memory Disk RAM Free

> Contact cleaner and system monitor for efficient phone management. (iPhone/iPad app by Phan Nhut.)

- Source: https://appshunter.io/ios/app/clean-and-clear-duplicate-master-contact-cleaner-monitor-and-check-memory-disk-ram-free/id1027423435 (this page in markdown: same URL + `.md`)
- Developer: [Phan Nhut](https://appshunter.io/developer/849063753)
- Category: Utilities, Productivity
- Price: Free
- Rating: 3.04/5 from 71 App Store ratings · 43 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 18 MB
- Languages: English
- Released: 2015-09-17
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/clean-and-clear-duplicate-master-contact-cleaner-monitor-and-check-memory-disk-ram-free/id1027423435/reviews.md

## What is Clean & Clear Duplicate Master Contact Cleaner?

√ Clean duplicate contacts.

√ Clean contacts that no have number phone or email.

√ Quickly remove contacts.

√ Backup & Restore contacts.

√ Export backup contacts through email.

√ Check real-time system information such as: Memory (RAM) Usage, Disk Usage and system information,...

-------------------------------
[Thank you]
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√ You will be surprised about all things which Contacts Cleaner bring to you.

√ We always works hard to bring better apps to you. Please send me any feedback (question or request features) to us.

## Key features

- Clean duplicate contacts
- Remove contacts without phone number or email
- Quick contact deletion
- Backup and restore contacts
- Export contact backups via email
- Real-time system information monitoring

## Recent user reviews (10 of 43)

All indexed reviews: https://appshunter.io/ios/app/clean-and-clear-duplicate-master-contact-cleaner-monitor-and-check-memory-disk-ram-free/id1027423435/reviews.md

### 1/5 — Another dud

*2022-05-04, version 1.0.8*

Don’t know why these cleaner apps are still here collecting money when the developers don’t keep them up to date and tested :/ I wish there was a way to collect a refund for this very reason no matter how much time has passed.

### 1/5 — awful ads

*2020-03-19, version 1.0.8*

Completely unusable

### 5/5 — ContactClean

*2019-03-07, version 1.0.8*

The updated version of ContactClean is an excellent app, especially for iOS devices. Keeping memory and storage clean simply requires a tap.

### 1/5 — Not impressed

*2017-12-03, version 1.0.8*

This App had a lot more potential, but for some reason it seems the creator just fizzled out half way through.

### 1/5 — RIP OFF RIPP OFG

*2017-08-15, version 1.0.8*

DONT BOTHER UNLESS YOU WANT TO PAY. PIECE OF CRAP. WASTE OF TIME. MISLEADING. LIES ABOUT BEING FREE. WILL ONLY PISS YOU OFF UNLESS YOU WANT TO PAY. HAS NOTHING TO OFFER. SCAM. SCAM. SCAM.

### 1/5 — Completely Unusable, Deserves Zero

*2017-06-12, version 1.0.8*

I would like to say I have given this app a fair try before reviewing.  Right when I opened it, before I saw anything else, an add popped open, and I thought I might have opened a wrong app by mistake. Realizing it was the right one, and that it was an add, I clicked the X and moved on.. before I could even choose any of the App's options, another add opened and I accidentally clicked it trying to choose one of those options.  So now I am in the App Store looking at some app I don't want instead of trying to find out how to clean my phone. Back into the app again, I managed to click to clean/sort my contacts, and before I had even highlighted a couple as a test from this list of contacts, ANOTHER add popped up and I accidentally clicked it trying to click a contact!  So back to the App Store, then back to the App, and start over.  3rd times the charm?  I tried to do everything SUPER quick to try and at least see how it all worked, and when I clicked the next button, it popped up a notification that I needed to PAY for that option!!! To top it all off, when you click app support it takes you to a Twitter account, which tells you to check their Facebook page!  How lazy and greedy can you be?? Worst app I've ever downloaded, and THAT is saying something.

### 1/5 — Worthless

*2016-07-16, version 1.0.8*

Don't waste your time

### 1/5 — Crashes too often 6s+

*2016-06-30, version 1.0.8*

Looking for contacts cleaner and saw this app. Read the reviews and said what the hell, try it! Free version crashed every time. Upgraded to Pro version. Yup, crashes every time too.

### 1/5 — Do not download

*2016-06-26, version 1.0.8*

Everything I wanted to do is behind a pay wall. I won't pay for it. Download is free. You must PAY to do anything

### 5/5 — ari-yo

*2016-06-21, version 1.0.8*

what does the u.s. iTunes app store have against system optimizer apps, system memory refreshing apps, & battery boosting apps? 
seriously! 
every time i find one that does it all, inevitably the app store phases it out. 
these types of utilities are readily available in every other store, but not in the u.s. store.
it's as though apple doesn't want it's customers to be able to enjoy the benefits of this type of utility, and they don't have the right to decide that for their customers.
(and yet they have done just that)
hasn't anyone out there noticed this? 
i cannot be the only person.

## Frequently asked questions about Clean & Clear Duplicate Master Contact Cleaner

### What does this app do?

This app is designed to help you manage your phone's contacts and system information. It can clean duplicate contacts, remove contacts that are missing phone numbers or emails, and quickly delete unwanted entries. It also offers backup and restore features for your contacts.

### Can I back up and restore my contacts with this app?

Yes, the app provides a backup and restore functionality for your contacts. You can also export your contact backups through email, making it easy to save and transfer your contact list.

### What kind of system information does the app provide?

The app offers real-time system information, including your device's memory (RAM) usage and disk usage. It also provides general system information, helping you keep track of your phone's performance and storage.

### Is this app free to use?

Based on the provided information, the app is available for free. There are no mentions of in-app purchases or subscription models, indicating it is a free utility.

### How does this app help clean my contacts?

The app offers several ways to clean your contacts. It can identify and remove duplicate entries, as well as clean out contacts that lack essential information like a phone number or email address. It also allows for quick deletion of contacts you no longer need.

## Version history (last 1 release)

### 1.0.8 — 2016-02-27

This app has been updated by Apple to display the Apple Watch app icon.

- Fix crash when restoring contacts larger 50 contacts.

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## More apps by Phan Nhut

- [Smart Memory Pro - Check RAM & System Checker](https://appshunter.io/ios/app/smart-memory-pro-check-ram-and-system-checker/id849114011)
- [Smart Memory Lite - Check RAM & System Checker](https://appshunter.io/ios/app/smart-memory-lite-check-ram-and-system-checker/id873671623)
- [Memory & Disk Scanner - Check System Information](https://appshunter.io/ios/app/memory-and-disk-scanner-check-system-information/id923813218)
- [Folder Lock - Hide Photo,Video](https://appshunter.io/ios/app/folder-lock-hide-photovideo/id1015929512)
- [Password Lock Private Photo & Video - Don't Touch This](https://appshunter.io/ios/app/password-lock-private-photo-and-video-dont-touch-this/id1026958017)

All apps by Phan Nhut: https://appshunter.io/developer/849063753

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*