Comparison

Contacts Sync Pro vs Iodine Code

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

Iodine Code

A mobile code editor and Git tool that allows you to code, stage, commit, and push directly from your iPhone or iPad. It features syntax highlighting, code suggestions, and a diff viewer for a seamless coding experience.

Highlights
  • Powerful Git tool
  • Multi-tab code editor
  • Diff viewer
  • Project file manager
  • Syntax highlighting
  • Code suggestion
Features
Read full description

Iodine Code is a powerful git tool and beautiful code editor. With syntax highlighting and code suggestion, it offers you a fluent experience similar to coding on PC. Coding, staging, committing, pushing and viewing logs, every thing will be done just in your iPhone / iPad. • Powerful git tool (clone, pull, push, branch, tag, log, status, commit...) • Beatiful multi-tab code editor • Splendid diff viewer • Handy project file manager with Quick-Opener and Drag & Drop • iPad Pro smart keyboard shortcuts • Great syntax highlighting (Objective-C only so far) • Context awareness code suggestion (Objective-C only so far)

Screenshots

Contacts Sync Pro4 screens
Iodine Code4 screens

Verdict

The call

The clearest difference is review sentiment: Contacts Sync Pro at 88% against Iodine Code's 33%. Contacts Sync Pro also leads on rating (4.7 vs 1.0) and ratings volume (811 vs 3). Iodine Code's advantage is in-app purchases (none vs 4) and price ($4.99 vs $9.99). On update cadence, 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

Contacts Sync Pro costs $9.99 and Iodine Code $4.99 up front. Contacts Sync Pro sells 4 one-off in-app purchases. Iodine Code asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

Contacts Sync Pro holds the better App Store score, 4.7 against 1.0. That said, the two scores are not equally well evidenced: Contacts Sync Pro has 811 ratings behind it against 3, 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 33% of Iodine Code's.

UpkeepUpdate frequency

Contacts Sync Pro ships an update every 3 months, Iodine Code every 4 months. The most recent releases landed on October 17, 2026 and October 2, 2026 respectively.

Scorecard8 real differences · 3 level
Contacts Sync Pro versus Iodine Code: the parameters behind the verdict, then further details
ParameterContacts Sync ProIodine Code
Price$9.99$4.99 — better
Rating4.7 (811 ratings) — better1.0 (3 ratings)
Positive reviews87.6% of reviews — better33.3% of reviews
Number of ratings811 — better3
Update frequencyEvery 3 months — betterEvery 4 months
AdsNoNo
In-app purchasesYesNo — better
MonetizationFree with in-app purchases — betterPaid
Best chart rank#160 — better—
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.011.0 — better
Further details — not scored
Size42 MB14 MB
Age rating4+4+
DeveloperPlaya Apps典 熊

Customer experience

Contacts Sync Pro

All ratings811 ratings
Positive94.5%
Neutral1.8%
Negative3.7%
Written reviews429 reviews
Positive87.6%
Neutral2.6%
Negative9.8%

Iodine Code

All ratings3 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews6 reviews
Positive33.3%
Neutral16.7%
Negative50.0%

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

Iodine Code

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

Iodine Code

No in-app purchases

Questions

Is Contacts Sync Pro free?
Contacts Sync Pro costs $9.99, and also offers in-app purchases.
Is Iodine Code free?
Iodine Code costs $4.99, with no in-app purchases.
Which has better reviews, Contacts Sync Pro or Iodine Code?
Contacts Sync Pro is rated higher. Contacts Sync Pro averages 4.7 out of 5 from 811 ratings, while Iodine Code averages 1.0 from 3 ratings.
Do Contacts Sync Pro or Iodine Code have ads?
Neither Contacts Sync Pro nor Iodine Code shows ads.
Which is updated more often, Contacts Sync Pro or Iodine Code?
Contacts Sync Pro ships an update every 3 months, and Iodine Code every 4 months. Most recently, Contacts Sync Pro was updated on October 17, 2026 and Iodine Code on October 2, 2026.

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