Comparison

IBackup 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

IBackup

Easily back up and restore your mobile data, including contacts, photos, videos, and calendar events, to the cloud with a single tap. Access your backed-up files from any device and share them securely. Automatic uploads and robust encryption ensure your data is safe and accessible.

Highlights
  • Single-tap backup and restore
  • Selective file backup
  • Cross-device access
  • Secure file sharing
  • Automatic photo/video upload
  • 256-bit AES encryption
Features
Read full description

The all new online backup app for iOS makes it possible to backup and restore mobile data with a 'single tap'. Backup your contacts, photos, videos, and calendar events to the cloud. Backup unlimited devices into a single account and access them from anywhere - no matter which IBackup plan you belong to! Features: • Backup and restore contacts, photos, videos, and calendar events with a single tap. • Selectively backup and restore only the files you need. • Browse files and download photos and videos from all your linked devices. • Share files and folders with anyone using a single secure link. • Automatic upload option protects your photos and videos, as soon as they are taken, via wi-fi or cellular data. • View pictures, play video, and more from the Gallery. Security features: • Data is encrypted using 256-bit AES encryption. • With the optional private key encryption, no one but you can access your data. • Lock the app with a passcode.

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

IBackup4 screens
Contacts Sync4 screens

Verdict

The call

The clearest difference is update cadence: Contacts Sync at every 5 days against IBackup's every 2 months. Contacts Sync also leads on ratings volume (15K vs 181). On price, rating, review sentiment and ads 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. IBackup sells 1 one-off in-app purchase and Contacts Sync sells 7 in-app purchases, starting at $1.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.5 for IBackup against 4.6 for Contacts Sync. That said, the two scores are not equally well evidenced: Contacts Sync has 15K ratings behind it against 181, so its average is the more settled of the two. Written reviews are what separate them: 79% of IBackup's written reviews are positive against 78% of Contacts Sync's.

UpkeepUpdate frequency

IBackup ships an update every 2 months, Contacts Sync every 5 days. The most recent releases landed on September 25, 2026 and September 24, 2026 respectively.

Scorecard2 real differences · 8 level
IBackup versus Contacts Sync: the parameters behind the verdict, then further details
ParameterIBackupContacts Sync
PriceFreeFree
Rating4.5 (181 ratings)4.6 (15K ratings) — better
Positive reviews79.5% of reviews — better78.2% of reviews
Number of ratings18115K — better
Update frequencyEvery 2 monthsEvery 5 days — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better17.0
Further details — not scored
Size100 MB43 MB
Age rating4+4+
DeveloperIDrive IncorporatedPlaya Apps

Customer experience

IBackup

All ratings181 ratings
Positive87.3%
Neutral3.3%
Negative9.4%
Written reviews73 reviews
Positive79.5%
Neutral6.8%
Negative13.7%

Contacts Sync

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

User reviews

IBackup

From 181 App Store ratings

What we love

  • 👍 Easy to use layout
  • 🚀 Fast backups
  • 🔒 Secure data storage
  • 💡 Simple sharing functionality
  • 🔄 Automatic backup feature

Room to improve

  • 🐛 App crashes frequently
  • ❌ Login issues (invalid email/password)
  • 🚫 Does not back up documents/mp3s
  • ⚠️ No password verification during signup
  • 📉 Slow performance at times

Contacts Sync

From 15K App Store ratings

What we love

  • 👍 Easy to use
  • 🚀 Quick and efficient
  • 💡 Useful for syncing contacts across devices
  • 🔒 Reliable and secure
  • 🙌 Great customer support

Room to improve

  • 🐛 Occasional sync issues
  • 💰 Paid subscription required for more than 40 contacts
  • 🔄 Confusion around syncing and merging contacts
  • 🤔 Inconsistent contact formatting after sync

Bugs and requests

IBackup

Reported bugs

7 issues
  • App crashes on upload
  • Unable to open backed up files
  • Login screen shows 'invalid email or password' instantly
  • Backup function only saves a fraction of events
  • App freezes or crashes during upload
Show 2 more
  • Cannot sign up within the app
  • App pauses backup if not in foreground

Requested features

6 requests
  • Allow backup of documents and mp3 files
  • Implement password verification during signup
  • Enable background backups
  • Allow backups with phone locked
  • Improve login process
Show 1 more
  • Add option to view logs

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

1 purchases

IBackup

One-time1
  • IBackup 500GB Yearly$99.99
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 IBackup free?
IBackup is free to download, with in-app purchases available.
Is Contacts Sync free?
Contacts Sync is free to download, with in-app purchases available.
Which has better reviews, IBackup or Contacts Sync?
Contacts Sync is rated higher. IBackup averages 4.5 out of 5 from 181 ratings, while Contacts Sync averages 4.6 from 15K ratings.
Do IBackup or Contacts Sync have ads?
Neither IBackup nor Contacts Sync shows ads.
Which is updated more often, IBackup or Contacts Sync?
IBackup ships an update every 2 months, and Contacts Sync every 5 days. Most recently, IBackup was updated on September 25, 2026 and Contacts Sync on September 24, 2026.

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