Comparison

Keep Contacts vs Contacts Sync

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

Head to head
About

Keep Contacts

Securely back up and restore your phone's contact lists for free. Easily manage, merge duplicates, and import/export contacts via a web interface. Sync across multiple devices and restore to a new phone if yours is lost or damaged.

Highlights
  • Contact backup and restore
  • Sync across multiple devices
  • Find and merge duplicate contacts
  • Import and export contact lists
  • Restore deleted contacts
  • Web-based contact management
Features
Read full description

What is Keep Contacts? Keep Contacts, formerly known as Everdroid, is a service that at its base stores your phones contact lists in a secure place - for free. If your phone is stolen or damaged, you will be able to restore your contact lists to a new phone. How to get started Getting started is easy – just download the app and sign in to start backing up your contacts. If you already have contacts on Keep these will be sent to your phone. And that's it - the app will synchronize any further changes and notify you if it needs your attention. And, of course, if you change to a new phone - just download the app, sign in and synchronize to get your contact list to the device. You can use several devices with the same account - these will then share contact list. Additional features We do not only offer a way to synchronize (backup and restore) your contact list. We also want to let your contact list shine. Therefore we have several tools on the Keep web that lets you update your contact list. If you head to keepcontacts.com you will find tools such as: - Finding duplicates and merging these - Manual merge of contacts - Creating, removing and editing contacts - Importing and exporting contact list - Restoring removed contacts from trash Contact and Support If you have any questions do not hesitate to contact us! Send a mail to support@keepcontacts.com and we will get back to you as soon as possible.

About

Contacts Sync

Effortlessly synchronize your contacts across Google, Outlook, and iPhone. This reliable app ensures your contact information is up-to-date everywhere with 2-way syncing and support for all contact fields and photos.

Highlights
  • 2-way contact synchronization
  • Sync Google, Outlook, and iPhone accounts
  • Syncs all contact fields and photos
  • Automatic background syncing
  • Group and custom label synchronization
  • Duplicate contact elimination
Features
Read full description

••• SYNC GOOGLE, ICLOUD, & OUTLOOK! ••• #1 SYNC APP FOR 15+ YEARS! ••• TRUSTED BY 10,000,000+ USERS! With Contacts Sync, 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 SUBSCRIPTIONS: • Contacts Sync offers a "Premium" subscription which unlocks all of the premium features in the app, including the ability to sync an unlimited number of contacts and to auto sync in the background. • Without an upgrade, the app will sync no more than 40 contacts • The "Premium" subscription is priced at $1.99 USD per week, $2.99 USD per month, or $9.99 USD per year • Payment will be charged to iTunes Account at confirmation of purchase • Subscription automatically renews unless auto-renew is turned off at least 24-hours before the end of the current period • Account will be charged for renewal within 24-hours prior to the end of the current period • Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's Account Settings after purchase • Any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication, where applicable • Terms of use: https://playaapps.zendesk.com/hc/articles/360004197333 • Privacy Policy: https://playaapps.zendesk.com/hc/articles/226767688

Screenshots

Keep Contacts4 screens
Contacts Sync4 screens

Verdict

The call

The clearest difference is in-app purchases: Keep Contacts at none against Contacts Sync's 7. Keep Contacts also leads on rating (5.0 vs 4.6) and iOS requirement (15.0 vs 17.0). Contacts Sync's advantage is update cadence (every 5 days vs every 6 weeks) and review sentiment (78% vs 50%). On price, 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

Both are free to download. Contacts Sync sells 7 in-app purchases, starting at $1.99 per 7 days. Keep Contacts asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Keep Contacts holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: Contacts Sync has 15K ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 50% of Keep Contacts's written reviews are positive against 78% of Contacts Sync's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

Keep Contacts ships an update every 6 weeks, Contacts Sync every 5 days. The most recent releases landed on September 20, 2026 and September 24, 2026 respectively.

Scorecard7 real differences · 3 level
Keep Contacts versus Contacts Sync: the parameters behind the verdict, then further details
ParameterKeep ContactsContacts Sync
PriceFreeFree
Rating5.0 (1 ratings) — better4.6 (15K ratings)
Positive reviews50.0% of reviews78.2% of reviews — better
Number of ratings115K — better
Update frequencyEvery 6 weeksEvery 5 days — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.0
Further details — not scored
Size11 MB43 MB
Age rating4+4+
DeveloperTactel abPlaya Apps

Customer experience

Keep Contacts

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews6 reviews
Positive50.0%
Neutral0.0%
Negative50.0%

Contacts Sync

All ratings14,870 ratings
Positive90.4%
Neutral3.2%
Negative6.4%
Written reviews739 reviews
Positive78.2%
Neutral2.3%
Negative19.5%

Bugs and requests

Keep Contacts

Not enough reviews yet to summarise bugs or requests.

Contacts Sync

Reported bugs

2 issues
  • Deleted contacts reappearing after sync
  • Sync corrupting or deleting existing contact data

Requested features

4 requests
  • Ability to merge duplicate contacts
  • Sync support for Outlook contacts
  • Automatic sync between multiple Google accounts
  • Undo/rollback option for sync operations

In-app purchases

None

Keep Contacts

No in-app purchases

7 purchases

Contacts Sync

Subscriptions3
  • Premium (1 Week)$1.997 Days
  • Premium (1 Month)$2.991 Month
  • Premium (1 Year)$9.991 Year
One-time4
  • Automatic Contact SyncingFree
  • Make Contribution$4.99
  • Make Larger Contribution$9.99
Show 1 more
  • Premium (Lifetime Access)$11.99

Questions

Is Keep Contacts free?
Keep Contacts is free to download, with no in-app purchases.
Is Contacts Sync free?
Contacts Sync is free to download, with in-app purchases available.
Which has better reviews, Keep Contacts or Contacts Sync?
Keep Contacts is rated higher. Keep Contacts averages 5.0 out of 5 from 1 ratings, while Contacts Sync averages 4.6 from 15K ratings.
Do Keep Contacts or Contacts Sync have ads?
Neither Keep Contacts nor Contacts Sync shows ads.
Which is updated more often, Keep Contacts or Contacts Sync?
Keep Contacts ships an update every 6 weeks, and Contacts Sync every 5 days. Most recently, Keep Contacts was updated on September 20, 2026 and Contacts Sync on September 24, 2026.

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