$0 iOS App: Contacts Sync for Google Gmail with Auto Sync (Normally $3.79)

First time this has been free, and from the reviews, seems like an awesome app.

••• SYNCS GROUPS!
••• SYNCS AUTOMATICALLY!
••• #1 IN SALES & REVIEWS FOR 2+ YEARS!
••• FREE FOR ONE DAY ONLY!

"Contacts Sync for Google Gmail" allows you to quickly & easily sync your Gmail & iPhone contacts so you can have access to your contacts wherever you go. This app stands out from the competition with its reliability, ease of use, speed, and with a true "2-way sync" that allows you to merge changes you've made to your Gmail & iPhone contacts. This is the #1 app for syncing Gmail contacts with the iPhone/iPad/iPod both in terms of reviews & sales.

Also of significance, this app syncs contact groups with Google. For instance, you may have your Gmail contacts organized into groups such as "friends," "family," and "coworkers." After syncing, your iPhone groups will match your Gmail groups.

With the customizability that this app provides, it can be used in a number of creative ways. For example, you can backup your iPhone contacts to Gmail, you can sync iCloud or Exchange contacts with Gmail, or you can perform syncs in one direction only (such as Gmail to iPhone).

SYNC TYPES:
• Choose from one of the following sync types: 2-way sync, Gmail contacts -> iPhone, iPhone contacts -> Gmail, manual sync, & Facebook contacts -> Gmail
• Choose a 2-way sync to combine changes you’ve made to both your iPhone & Gmail contacts
• Choose a 1-way sync to transfer changes in one direction only

INITIAL SYNC:
• During the initial sync, the contents of matching Gmail & iPhone contacts will be combined with each other

CONFIRM BEFORE SYNCING:
• Review each change before the sync actually begins

SYNC HISTORY:
• Monitor the results of the current sync, and review the results of the last 100 synchronizations

GROUPS:
• Syncs groups in both directions including “My Contacts”
• Optionally select to sync specific groups only

SYNCS ALL FIELDS:
• Syncs all fields including names, phonetic names, nicknames, email addresses, phone numbers, postal addresses, company names, job titles, departments, birthdays, anniversaries, events, notes, web page addresses, relationships, instant messaging accounts, & social profiles
• Syncs contact photos
• Syncs custom labels & custom fields

CONTACT ACCOUNTS:
• Choose which iPhone contact account you want to sync specifically whether it's an iCloud account, an Exchange account, or just a local iPhone address book

AUTOMATIC SYNC:
• Automatically syncs contacts in the background 24/7 (requires iOS7 & in-app purchase)

DUPLICATES:
• Prevents duplicates by automatically matching your Gmail & iPhone contacts when syncing
• Warns you of potential duplicates in Gmail before they’re synced to your iPhone

COMPATIBILITY:
• Compatible with iPhone, iPad, iPod, iOS5, iOS6, iOS7, iCloud, Google Apps, & Exchange Server

LANGUAGES:
• English, French, German, Italian, Portuguese, Russian, Spanish, Swedish, Japanese, Korean, & Chinese

SUPPORT:
• In the case that you need support, our friendly American customer support team usually answers emails within 4 hours

RECENT REVIEWS (US App Store):
• "Absolutely ESSENTIAL app! Gives you just the right options, with clear instructions, and executes fast & flawlessly. Absolutely get this!"
• "Tried another app that claims it does same thing only to be disappointed. Downloaded this app & it worked 1st time!"
• "Keeping both Google contacts and iPhone contacts updated has never been this easy. You can make changes on either side and then sync both by simply clicking the 2-way sync button. Great job!"
• “This app is one of the best ones you will never find in the marketplace. It is fast, reliable, and fixes your entire contact list across many mediums. MUST GET!”