Comparison

Contacts+ | Address Book vs Contacts Sync Pro

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

Head to head
About

Contacts+ | Address Book

This cloud-based address book simplifies contact management by syncing across devices and accounts. It offers features like contact deduplication, business card scanning, and automatic enrichment to keep your information organized and up-to-date.

Highlights
  • Cross-device, cross-platform sync
  • Contact deduplication
  • Scan and save business cards
  • Tag contacts and add notes
  • Automatic contact enrichment
  • Spam blocking
Features
Read full description

Meet your new favorite contact management tool, Contacts+. Contacts+ is a cloud-based address book designed to take the hassle out of contact management so you can focus on what matters most - relationships. Truly multi-platform, Contacts+ syncs your contacts across your devices as well as across various accounts you may store contacts in (such as Gmail, Exchange, Office365, and iCloud). Why use Contacts+? • Contact deduplication - Consolidate all your information about each contact into one, holistic profile. Never wonder again which pieces of contact information are correct. • Cross-device, cross-platform sync - Your address book is now available everywhere. • Scan & save business cards - Upload a picture of scanned business card, and we'll transcribe the information & add it to your address book. • Organized your way - Tag contacts to create custom groupings, or leave notes for added context. • Automatic contact enrichment - We'll help fill in the details about your contacts (photos, social profiles, & more) by adding content we find from around the web. • Spam Block - We help enable you to connect with friends and colleagues and block unwanted people, telemarketers, and spam. Do even MORE with Contacts+ Premium. With Premium, you can: • Scan MORE business cards - Scan & save up to 1,000 business cards a year. • Sync multiple accounts - Sync up to 5 address books & keep your contacts in sync across multiple platforms. • Choose Monthly or Annual Premium subscription - Pick a plan that fits your needs. Contacts+ is free to download and use, and Contacts+ Premium is available by subscription and unlocks all of the features above. Prices may vary by location. Payment will be charged to your Apple ID account at the confirmation of purchase. The subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Privacy & Terms of Service This App is for professional use and not intended for children under the age of 16, and we will never intentionally collect any information from users under the age of 16. For more information, please visit our privacy policy. Privacy Policy: https://www.contactsplus.com/privacy Terms of Use: https://www.contactsplus.com/terms Questions, feedback, just want to say "hi"? You can email us at support@contactsplus.com!

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

Screenshots

Contacts+ | Address Book4 screens
Contacts Sync Pro4 screens

Verdict

The call

The clearest difference is price: Contacts+ | Address Book at Free against Contacts Sync Pro's $11.99. Contacts+ | Address Book also leads on update cadence (every 2 weeks vs every 3 months) and ratings volume (5.8K vs 802). Contacts Sync Pro's advantage is review sentiment (87% vs 60%) and rating (4.7 vs 4.5). On ads, in-app purchases, monetization model 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

Contacts+ | Address Book is free to download; Contacts Sync Pro costs $11.99 up front. Contacts+ | Address Book sells 8 in-app purchases, starting at $9.99 per month and Contacts Sync Pro sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

Contacts Sync Pro holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Contacts+ | Address Book has 5.8K ratings behind it against 802, so its average is the more settled of the two. Written reviews point the same way: 60% of Contacts+ | Address Book's written reviews are positive against 87% of Contacts Sync Pro's.

UpkeepUpdate frequency

Contacts+ | Address Book ships an update every 2 weeks, Contacts Sync Pro every 3 months. The most recent releases landed on September 23, 2026 and September 22, 2026 respectively.

Scorecard6 real differences · 5 level
Contacts+ | Address Book versus Contacts Sync Pro: the parameters behind the verdict, then further details
ParameterContacts+ | Address BookContacts Sync Pro
PriceFree — better$11.99
Rating4.5 (5.8K ratings)4.7 (802 ratings) — better
Positive reviews60.0% of reviews87.4% of reviews — better
Number of ratings5.8K — better802
Update frequencyEvery 2 weeks — betterEvery 3 months
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
Best chart rank—#105 — better
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better16.0
Further details — not scored
Size52 MB44 MB
Age rating17+4+
DeveloperFullContact Inc.Playa Apps

Customer experience

Contacts+ | Address Book

All ratings5,805 ratings
Positive89.2%
Neutral4.4%
Negative6.4%
Written reviews683 reviews
Positive60.0%
Neutral9.5%
Negative30.5%

Contacts Sync Pro

All ratings802 ratings
Positive94.4%
Neutral1.9%
Negative3.7%
Written reviews422 reviews
Positive87.4%
Neutral2.6%
Negative10.0%

User reviews

Contacts+ | Address Book

From 5.8K App Store ratings

What we love

  • 🚀 Easy contact management
  • 🔍 Useful contact enrichment
  • 📚 Great contact organization
  • 🔗 Seamless sync across platforms

Room to improve

  • 🐛 Unreliable sync and data loss
  • 💰 Expensive subscription model
  • 🔍 Inaccurate contact information
  • 🤯 Confusing user experience

Contacts Sync Pro

From 802 App Store ratings

What we love

  • 🚀 Works flawlessly
  • 👍 Easy to use
  • 🚀 Reliable and accurate
  • 🚀 Keeps contacts in sync
  • 👍 Excellent responsiveness from developer

Room to improve

  • 🐛 UX has subtly changed for the worse
  • 🐛 Confusing to use for just syncing one contact
  • 🐛 Doesn't sync Gmail groups

Bugs and requests

Contacts+ | Address Book

Reported bugs

3 issues
  • App crashes and freezes on latest iOS versions
  • Sync issues causing duplicate and missing contacts
  • Inability to restore deleted or lost contacts

Requested features

4 requests
  • Native integration with Outlook and Microsoft 365
  • Improved contact deduplication and merging
  • Better support for international contacts and languages
  • Customizable contact fields and views

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

In-app purchases

8 purchases

Contacts+ | Address Book

Subscriptions7
  • Premium (Monthly)$9.991 Month
  • Contacts+ Quarterly Premium$13.991 Month
  • Contacts+ Monthly Premium$15.991 Month
Show 4 more
  • Premium (Quarterly)$29.993 Months
  • Contacts+ Quarterly Premium$39.993 Months
  • Premium (Annual)$99.991 Year
  • Contacts+ Yearly Premium$119.991 Year
One-time1
  • Pack of 100 business cards$9.99
4 purchases

Contacts Sync Pro

One-time4
  • Unlimited SyncsFree
  • Automatic Contact SyncingFree
  • Make Contribution$4.99
Show 1 more
  • Make Larger Contribution$9.99

Questions

Is Contacts+ | Address Book free?
Contacts+ | Address Book is free to download, with in-app purchases available.
Is Contacts Sync Pro free?
Contacts Sync Pro costs $11.99, and also offers in-app purchases.
Which has better reviews, Contacts+ | Address Book or Contacts Sync Pro?
Contacts Sync Pro is rated higher. Contacts+ | Address Book averages 4.5 out of 5 from 5.8K ratings, while Contacts Sync Pro averages 4.7 from 802 ratings.
Do Contacts+ | Address Book or Contacts Sync Pro have ads?
Neither Contacts+ | Address Book nor Contacts Sync Pro shows ads.
Which is updated more often, Contacts+ | Address Book or Contacts Sync Pro?
Contacts+ | Address Book ships an update every 2 weeks, and Contacts Sync Pro every 3 months. Most recently, Contacts+ | Address Book was updated on September 23, 2026 and Contacts Sync Pro on September 22, 2026.

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