From Playa Apps:
SYNCS GROUPS. SYNCS AUTOMATICALLY. COMPATIBLE WITH GOOGLE APPS. With "Synctastic, " you can quickly & easily sync your Gmail & iPhone contacts so that you can have access to your contacts wherever you go. This app distinguishes itself with its reliability, ease of use, speed, and with a true "2-way sync" that merges changes made to both your Gmail & iPhone contacts. This is the #1 app for syncing Gmail contacts with iPhone/iPad/iPod both in terms of downloads & reviews. Also of significance, this app syncs contact groups with Google. For instance, you may have organized your Gmail contacts 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. Choose a 2-way sync to combine changes you've made to your contacts in both iPhone & Gmail. Choose a 1-way sync to transfer changes in one direction only. Choose a manual sync to sync selected contacts only. SYNC FILTERS INCLUDING GROUP FILTER: Sync specific contacts only by using filters. Apply the group filter to sync contacts that belong to the specified groups only. Apply the new contact filter to ignore contacts without an email address or phone number. Various other filters available. 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. AUTO ADD TO GROUP: Optionally add synced contacts to a specified group such as "Modified by Synctastic". INITIAL SYNC: During the initial sync, the contents of matching Gmail & iPhone contacts will be merged. CONFIRM CHANGES BEFORE SYNCING: Review each change before the sync actually begins. Easily override the suggested changes. AUTOMATIC SYNC: Automatically syncs contacts in the background 24/7. CONTACT ACCOUNTS: Choose which iPhone contact account you want to sync with Google whether it's an ordinary iPhone address book, iCloud, Exchange, Outlook, Yahoo, or even Facebook. 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. SYNC HISTORY: Monitor the results of the current sync, and review the results of the last 100 synchronizations. COMPATIBILITY: Compatible with iPhone, iPad, iPod, iOS8, iOS9, iOS10, iCloud, Google Apps, Exchange Server, ssO. 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.