Comparison

Contacts Sync Pro vs Sync2 Outlook Google & iCloud

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Contacts Sync Pro

Effortlessly synchronize your contacts across Google, iCloud, and Outlook. This reliable app ensures your contact information is up-to-date on your iPhone, supporting two-way syncing and preserving all contact details and groups.

Highlights
  • Sync Google, iCloud, and Outlook contacts
  • Two-way and one-way sync options
  • Syncs all contact fields and photos
  • Preserves Google labels and Outlook categories
  • Automatic background syncing
  • Duplicate contact elimination
  • Confirm changes before syncing
Features
Read full description

••• SYNC GOOGLE, ICLOUD, & OUTLOOK! ••• #1 SYNC APP FOR 15+ YEARS! ••• TRUSTED BY 10,000,000+ USERS! With Contacts Sync Pro, you can quickly & easily sync your Google or Outlook contacts with iPhone, giving you 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 either account. This is the #1 app for syncing contacts both in terms of downloads & reviews. Also of significance, this app syncs your Google labels or Outlook categories with your iPhone lists. For instance, you may have organized your Google contacts into groups such as "friends," "family," and "coworkers." After a sync, your iPhone and Google groups will match. With your groups configured on iPhone, you can easily send group emails or group messages. SYNC THE FOLLOWING ACCOUNTS: • Sync Google with iPhone • Sync Outlook with iPhone • Sync 2 Google accounts SYNC ANY IPHONE ACCOUNT: • Choose to sync all of your iPhone contacts, or choose to sync contacts from a specific iPhone account, such as iCloud, a local iPhone address book, Outlook, or a CardDAV account SYNC TYPES: • Choose from one of the following sync types: 2-Way Sync, 1-Way Sync, and Manual Sync • Choose a 2-Way Sync to sync changes in both directions • Choose a 1-Way Sync to transfer changes in one direction only • Choose a Manual Sync to sync specific contacts 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 INITIAL SYNC: • During the initial sync, the contents of matching contacts will be merged CONFIRM CHANGES BEFORE SYNCING: • Review each change before the sync actually begins AUTOMATIC SYNC: • Automatically syncs contacts in the background 24/7 APPLY FILTERS INCLUDING GROUP FILTER: • Apply the group filter, new contact filter, and more! DUPLICATE CONTACTS: • Eliminate duplicate contacts from both iPhone and Google

About

Sync2 Outlook Google & iCloud

Seamlessly synchronize your Microsoft Outlook data, including emails, calendars, and contacts, with Google, iCloud, and other cloud services. This companion app enables two-way syncing between your PC and mobile devices like iPhone and iPad, even when Outlook is closed.

Highlights
  • Sync Outlook with iPhone/iPad via Google
  • Sync Outlook Calendar with Google Calendars
  • Sync Outlook Contacts with Google Contacts
  • Sync Outlook Tasks with Google Tasks Lists
  • Two-way synchronization
  • Sync without Microsoft Exchange server
  • Automatic backups before sync
Read full description

This is a Complimentary Companion that helps you set up synchronization for Outlook with iCloud, Google, Office 365, Exchange and iPhone/iPad sync with iCloud and other cloud services. With Sync2 you will be able to synchronize your iPhone/iPad with Microsoft Outlook using your Google Account. PLEASE NOTE: THE SOFTWARE DOES NOT SUPPORT MICROSOFT OUTLOOK FOR MAC. Public Folder Sync to smartphones Public Folders sync solution. Microsoft Exchange Public Folders are not displayed natively on smartphones. Choose sync type “Public Folders on Mobile Device" and you will be guided to set up Sync2 Cloud. The new Sync2 Cloud helps to sync Public Folders. Sync & Share Public Folders on multiple platforms or smartphones (iPhone, iPad). Sync any type of Public folders (calendars, contacts, tasks, emails, notes). Sync Microsoft Outlook with your iPhone/iPad using Google account. Use Sync2 to set up synchronization of your Google account and Microsoft Outlook. Set up the Google account on your iPhone or iPad and have your data synchronized both ways. Set up the Sync2 PC application for Microsoft Outlook with Sync2 Companion in a few simple steps. Go through all the necessary settings to set up Sync2 on your PC. Get familiar with Sync2 functionality easily and without any trouble. About the Sync2 desktop app: The PC Microsoft Outlook synchronization software keeps your Emails, Calendar, Contacts and Tasks in sync between your Outlook, Google, iPhone, iPad and any other smartphone, tablet or PC. You can schedule automatic Outlook synchronization, perform manual sync on demand, or use an instant sync feature for changes made in Outlook to be moved immediately. Sync2 is the right tool for you if you are looking for a way to: - Sync Outlook with your iPhone or iPad using your Google account; - Sync your Outlook Contacts, Calendars and/or Tasks using one-way or two-way synchronization; - Easily sync your Outlook data, such as emails, calendars, contacts, tasks, notes, Outlook journals, between multiple PCs without the Microsoft Exchange server; - Synchronize specific Outlook folders with different workgroups. Main Sync2 features: - Sync Outlook with iPhone or iPad using a Google account. - Sync Outlook Calendar with Google Calendars. - Sync Microsoft Outlook between PC‘s without a server. - Instant synchronization of changes made in Microsoft Outlook. - Synchronize Microsoft Outlook Contacts with Google Contacts. - Sync Outlook Tasks with Google Tasks Lists. - Back up Contacts and Calendar folders automatically before each synchronization. - Synchronize data even when Microsoft Outlook is closed. - Manual or scheduled synchronization. - Sync Exchange folders.

Screenshots

Contacts Sync Pro4 screens
Sync2 Outlook Google & iCloud4 screens

Verdict

The call

The clearest difference is review sentiment: Contacts Sync Pro at 88% against Sync2 Outlook Google & iCloud's 18%. Contacts Sync Pro also leads on rating (4.7 vs 4.0) and update cadence (every 3 months vs every 8 months). Sync2 Outlook Google & iCloud's advantage is price (Free vs $9.99) and in-app purchases (none vs 4). On ads and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Sync2 Outlook Google & iCloud is free to download; Contacts Sync Pro costs $9.99 up front. Contacts Sync Pro sells 4 one-off in-app purchases. Sync2 Outlook Google & iCloud asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Contacts Sync Pro holds the better App Store score, 4.7 against 4.0. That said, the two scores are not equally well evidenced: Contacts Sync Pro has 812 ratings behind it against 114, so its average is the more settled of the two. Written reviews point the same way: 88% of Contacts Sync Pro's written reviews are positive against 18% of Sync2 Outlook Google & iCloud's.

UpkeepUpdate frequency

Contacts Sync Pro ships an update every 3 months, Sync2 Outlook Google & iCloud every 8 months. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

Scorecard9 real differences · 2 level
Contacts Sync Pro versus Sync2 Outlook Google & iCloud: the parameters behind the verdict, then further details
ParameterContacts Sync ProSync2 Outlook Google & iCloud
Price$9.99Free — better
Rating4.7 (812 ratings) — better4.0 (114 ratings)
Positive reviews87.7% of reviews — better18.2% of reviews
Number of ratings812 — better114
Update frequencyEvery 3 months — betterEvery 8 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
Best chart rank#111 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.015 — better
Further details — not scored
Size42 MB3 MB
Age rating4+4+
DeveloperPlaya AppsAlittera Ltd Inc

Customer experience

Contacts Sync Pro

All ratings812 ratings
Positive94.5%
Neutral1.8%
Negative3.7%
Written reviews440 reviews
Positive87.7%
Neutral2.5%
Negative9.8%

Sync2 Outlook Google & iCloud

All ratings112 ratings
Positive77.7%
Neutral8.0%
Negative14.3%
Written reviews11 reviews
Positive18.2%
Neutral0.0%
Negative81.8%

Bugs and requests

Contacts Sync Pro

Reported bugs

2 issues
  • Caused massive increase in number of contacts
  • Eliminated all existing contacts

Requested features

2 requests
  • Improved handling of duplicate contacts
  • Better side-by-side comparison of contacts

Sync2 Outlook Google & iCloud

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

Contacts Sync Pro

One-time4
  • Unlimited SyncsFree
  • Automatic Contact SyncingFree
  • Make Contribution$4.99
Show 1 more
  • Make Larger Contribution$9.99
None

Sync2 Outlook Google & iCloud

No in-app purchases

Questions

Is Contacts Sync Pro free?
Contacts Sync Pro costs $9.99, and also offers in-app purchases.
Is Sync2 Outlook Google & iCloud free?
Sync2 Outlook Google & iCloud is free to download, with no in-app purchases.
Which has better reviews, Contacts Sync Pro or Sync2 Outlook Google & iCloud?
Contacts Sync Pro is rated higher. Contacts Sync Pro averages 4.7 out of 5 from 812 ratings, while Sync2 Outlook Google & iCloud averages 4.0 from 114 ratings.
Do Contacts Sync Pro or Sync2 Outlook Google & iCloud have ads?
Neither Contacts Sync Pro nor Sync2 Outlook Google & iCloud shows ads.
Which is updated more often, Contacts Sync Pro or Sync2 Outlook Google & iCloud?
Contacts Sync Pro ships an update every 3 months, and Sync2 Outlook Google & iCloud every 8 months. Most recently, Contacts Sync Pro was updated on October 26, 2026 and Sync2 Outlook Google & iCloud on October 24, 2026.

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