Comparison

A2Z Groups vs cSync

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

Head to head
About

A2Z Groups

Manage your contacts and send messages or emails to groups efficiently. Organize contacts, create custom groups, and send personalized mass communications. Features include backups, birthday reminders, and contact sharing.

Highlights
  • Create and manage contact groups
  • Send mass texts and group emails
  • Backup and restore contacts
  • Birthday and anniversary notifications
  • Share and export contacts
  • Clone contacts and groups
Features
Read full description

A2Z is the complete contact manager! With A2Z, you can easily create, edit, and delete contacts & groups. Send mass texts and group emails. View recently created contacts. Share or print your contacts. Create backups. Get birthday notifications. And so much more: CONTACTS: • View all of your contacts organized by account or group • Easily find a contact with A2Z's powerful search tool • Select multiple contacts and perform a number of actions including text, email, share, and delete • Quickly perform a number of functions with one touch directly from the contact card GROUPS: • Create groups of contacts from any account including iCloud, Google, Exchange or Outlook • Filter contacts by one or more groups at the same time • Add & remove contacts from a particular group • Add & remove groups from a particular contact FAVORITES: • Create a list of favorites allowing you to quickly call/message/email those contacts GROUP EMAILS & MESSAGES: • Send messages to groups via iMessage, SMS, & WhatsApp • Send emails to groups via Mail App or Gmail App • Attach photos & documents, including from Dropbox • Assign the to/cc/bcc email field to each contact individually • Give your message a personal touch - Automatically refer to each contact by name COMPANIES, BIRTHDAYS, ANNIVERSARIES, MOST VIEWED, RECENTLY CREATED/MODIFIED/DELETED: • Sort your contacts by company name • View upcoming birthdays & anniversaries • View your most frequently viewed contacts • View recently created & modified contacts • View & restore your recently deleted contacts SHARE CONTACTS: • Share one or more contacts via text message, email, or various other services • Export contacts in the CSV or vCard format DELETE CONTACTS & GROUPS: • Quickly delete contacts & groups BACKUP: • Create a backup of any contact account • Restore your backup to any contact account CLONE CONTACTS & GROUPS: • Clone a contact from the contact card screen including all contact fields & groups • Clone a group so you don't have to add all of the group members manually START SCREEN: • Specify whether the app should load the contacts, groups, or favorites screen at startup SHORTCUTS: • Press & hold a contact or group to conveniently perform a number of common functions SYNC CONTACTS WITH GOOGLE: • Fully compatible with the "Contacts Sync" app WORKS WELL WITH OTHER CONTACT APPS: • Any contact changes you make with this app will be reflected in any other contact app that queries the iPhone address book (including the standard Contacts & Phone app) SUBSCRIPTIONS: • A2Z Contacts offers a "Premium" subscription which unlocks all of the premium features in the app, including unrestricted group emails and texts, unrestricted sharing of contacts, and access to future premium features. • The "Premium" subscription is priced at $0.99 USD and the subscription length is 1 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, at a cost of $0.99 USD • 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/en-us/articles/360003030954 • Privacy Policy: https://playaapps.zendesk.com/hc/articles/229824667

About

cSync

Streamline contact management with powerful search, comprehensive backup, and intelligent cleanup tools. Analyze contact data with visual charts and perform batch operations for efficiency.

Highlights
  • Full-field and Pinyin search
  • Multi-format contact backup (vCard, CSV, Excel)
  • Duplicate contact detection and merging
  • Contact data statistics and visual charts
  • Batch operations for contacts
  • iCloud sync for backups
Features
Read full description

**cSync - Making Contact Management Easier** Have you ever encountered these problems? - iOS native contacts don't support partial phone number matching - Too many contacts, difficult to find people - Contact data cannot be easily backed up and migrated - Too many duplicate contacts need cleanup - Want to analyze contact data statistics cSync is built to solve these problems! --- **Powerful Search Features** - **Full-field search**: Search not only names, but also phones, emails, companies, positions, notes, addresses, and all other fields - **Pinyin search**: Quickly find contacts by entering pinyin initials or full pinyin - **Phone partial matching**: Match any consecutive digits in phone numbers - no need to remember the complete number - **Smart sorting**: Search results intelligently ranked by relevance, most relevant results first - **Highlight display**: Search results automatically highlight matched fields and text for easy viewing **Search Examples:** - Enter "138" to find all phone numbers containing these three consecutive digits - Enter "js" to find all contacts whose name pinyin initials are JS (e.g., John Smith) - Enter "apple" to find contacts with apple in their company name or email --- **Comprehensive Backup Features** - **Multi-format support**: Export to vCard, CSV, and Excel formats - **One-tap backup**: Backup all contacts with one tap, ensuring data safety - **Backup management**: View all historical backups, restore to any version anytime - **Incremental backup**: Intelligently identify changes, only backup modified contacts - **iCloud sync**: Backups automatically uploaded to iCloud Drive, sync across devices - **Backup encryption**: Password protection support for data privacy security - **Quick sharing**: Share backup files via AirDrop, Email, Messages, and more **Backup Scenarios:** - Backup contacts before getting a new phone, import on new device - Regular backups to prevent data loss - Export to Excel for editing and management on computer - Share with family and friends for batch contact import --- **Smart Cleanup Features** - **Duplicate detection**: Intelligent algorithms detect duplicate and similar contacts - **Multiple matching modes**: - Exact match: Same name and phone number - Smart match: Similar names, same pinyin, overlapping phone numbers - **Compare preview**: Side-by-side comparison of duplicate contacts, clearly see differences - **Smart merge**: Automatically merge duplicate contacts, retaining all non-empty fields - **Batch cleanup**: Clean all duplicate contacts with one tap --- **Data Statistics & Analytics** - **Contact overview**: Total count, growth trends, distribution - **Field statistics**: Number of phones, emails, company info completeness - **Visual charts**: Pie charts, bar charts, line charts to display data - **Group analysis**: Analyze by initial letter, company, tags, and other dimensions --- **Other Featured Functions** - **Batch operations**: Batch delete, export, and edit - **Quick actions**: Tap phone to call directly, tap email to send mail - **Alphabetical index**: Side letter navigation for quick contact location - **Elegant interface**: Modern design, smooth animations, simple operation - **Privacy protection**: All data stored locally only, never uploaded to servers --- **Privacy Commitment** - All contact data is stored only on your local device - Never uploaded to any servers or third parties - iCloud backups are encrypted and protected by Apple - No personal information collected - Works completely offline, no network connection required --- Privacy Policy: https://csync.vercel.app/privacy-policy.html Terms of Use: https://csync.vercel.app/terms-of-use.html --- **Download cSync and make contact management easier!**

Screenshots

A2Z Groups4 screens
cSync4 screens

Verdict

The call

The clearest difference is monetization model: cSync at freemium against A2Z Groups's subscription. cSync also leads on rating (5.0 vs 4.6). A2Z Groups's advantage is ratings volume (3.9K vs 1). On price, ads, in-app purchases 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. A2Z Groups sells 4 in-app purchases, starting at $0.99 per year and cSync sells 2 in-app purchases, starting at $6.99 per 7 days. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

cSync holds the better App Store score, 5.0 against 4.6. That said, the two scores are not equally well evidenced: A2Z Groups has 3.9K ratings behind it against 1, so its average is the more settled of the two.

Scorecard3 real differences · 7 level
A2Z Groups versus cSync: the parameters behind the verdict, then further details
ParameterA2Z GroupscSync
PriceFreeFree
Rating4.6 (3.9K ratings)5.0 (1 ratings) — better
Positive reviews81.9% of reviews—
Number of ratings3.9K — better1
Update frequencyEvery 3 weeks—
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
DevicesiPhone, iPadiPhone, iPad
Requires iOS16.0 — better16.6
Further details — not scored
Size17 MB2 MB
Age rating4+4+
DeveloperPlaya Apps丹丹 李

Customer experience

A2Z Groups

All ratings3,901 ratings
Positive91.4%
Neutral4.2%
Negative4.4%
Written reviews519 reviews
Positive81.9%
Neutral4.8%
Negative13.3%

cSync

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

Bugs and requests

A2Z Groups

Reported bugs

4 issues
  • Contacts being deleted unexpectedly
  • Inability to save contact information
  • Syncing issues with Google/Outlook contacts
  • Unreliable group messaging

Requested features

5 requests
  • Scheduled messaging
  • Improved group management
  • Better integration with native Contacts app
  • Map feature
  • Birthdays/anniversaries tracking

cSync

Not enough reviews yet to summarise bugs or requests.

In-app purchases

4 purchases

A2Z Groups

Subscriptions1
  • Premium (1 Year)2 variants$0.991 Year
One-time3
  • Premium (Lifetime Access)$1.99
  • Make Contribution$4.99
  • Larger Contribution$9.99
2 purchases

cSync

Subscriptions2
  • Weekly Premium3 Days trial$6.997 Days
  • Yearly Premium$69.991 Year

Questions

Is A2Z Groups free?
A2Z Groups is free to download, with in-app purchases available.
Is cSync free?
cSync is free to download, with in-app purchases available.
Which has better reviews, A2Z Groups or cSync?
cSync is rated higher. A2Z Groups averages 4.6 out of 5 from 3.9K ratings, while cSync averages 5.0 from 1 ratings.
Do A2Z Groups or cSync have ads?
Neither A2Z Groups nor cSync shows ads.

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