Comparison

A2Z Groups vs Sync with S3

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

Sync with S3

Automatically back up your phone's photos and videos to S3 storage, preserving your album and folder structure. It mirrors your library, uploads edited media and Live Photos, and ensures your S3 storage matches your device without deleting any original files.

Highlights
  • Syncs photo library to S3
  • Preserves album and folder hierarchy
  • Uploads edited photos and videos
  • Supports Live Photos video component
  • One-way sync, no phone data deletion
  • Selective folder/album syncing
Read full description

Sync for S3 synchronizes your phone’s photo library, including the album and folder hierarchy, to your S3 storage. For users who like to organize their photos into folders and albums, Sync will also - Sync automatically creates folders and albums you may have created in your phone’s photo library on S3 storage. - Uploads the video component for Live Photos. - Uploads the edited versions of photos and videos. - Mirror or backup your photo library. - Synchronize your entire photo library or only certain folders and albums. In summary, each time you run Sync, it will make sure any changes to your phone’s photo library are updated on your S3 storage, overwriting, renaming, uploading, and deleting items on your S3 storage if needed. Sync will also NEVER delete any photos from your phone. Sync performs a ONE-WAY sync only, making your S3 storage match your phone’s photo library. Any changes made on your S3 storage will not be synced to your phone, rather, the changes on your S3 storage will simply be overwritten the next time you run a Sync. Free Plan The free plan is limited to syncing up to 3 top-level folders and albums and up to 200 photos. Premium Plan Our affordable premium plan removes all restrictions and unlocks access to all future features. Subscription Pricing and Terms - Annual or monthly subscription billing will start immediately after you subscribe and will auto-renew each year or month. - Subscriptions will automatically renew unless canceled at least one day before the renewal date within 24 hours before the end of the current period. Payment will be charged to your Apple ID account at the confirmation of purchase. You can manage and cancel your subscription by going to your account settings in the App Store. - Subscriptions are non-refundable, so please choose this option carefully. - Please refer to the In-App Purchases section for pricing. Terms of Use — https://www.apple.com/legal/internet-services/itunes/dev/stdeula Privacy Policy — https://sync.photosplus.app/privacy.php

Screenshots

A2Z Groups4 screens
Sync with S34 screens

Verdict

The call

The clearest difference is review sentiment: A2Z Groups at 82% against Sync with S3's 0%. A2Z Groups also leads on rating (4.6 vs 1.0) and ratings volume (3.9K vs 1). Sync with S3's advantage is monetization model (freemium vs subscription). 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 Sync with S3 sells 2 in-app purchases, starting at $2.99 per month. Whichever you choose, the download price is not the number that matters.

ReceptionRating · Positive reviews · Number of ratings

A2Z Groups holds the better App Store score, 4.6 against 1.0. 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. Written reviews point the same way: 82% of A2Z Groups's written reviews are positive against 0% of Sync with S3's.

UpkeepUpdate frequency

A2Z Groups ships an update every 3 weeks, Sync with S3 every 2 months. The most recent releases landed on October 11, 2026 and October 2, 2026 respectively.

Scorecard5 real differences · 5 level
A2Z Groups versus Sync with S3: the parameters behind the verdict, then further details
ParameterA2Z GroupsSync with S3
PriceFreeFree
Rating4.6 (3.9K ratings) — better1.0 (1 ratings)
Positive reviews81.9% of reviews — better0.0% of reviews
Number of ratings3.9K — better1
Update frequencyEvery 3 weeks — betterEvery 2 months
AdsNoNo
In-app purchasesYesYes
MonetizationSubscriptionFreemium — better
DevicesiPhone, iPadiPhone, iPod
Requires iOS16.015.6 — better
Further details — not scored
Size17 MB27 MB
Age rating4+4+
DeveloperPlaya AppsPixegram, LLC

Customer experience

A2Z Groups

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

Sync with S3

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

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

Sync with S3

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

Sync with S3

Subscriptions2
  • Premium - Monthly$2.991 Month
  • Premium - Yearly$19.991 Year

Questions

Is A2Z Groups free?
A2Z Groups is free to download, with in-app purchases available.
Is Sync with S3 free?
Sync with S3 is free to download, with in-app purchases available.
Which has better reviews, A2Z Groups or Sync with S3?
A2Z Groups is rated higher. A2Z Groups averages 4.6 out of 5 from 3.9K ratings, while Sync with S3 averages 1.0 from 1 ratings.
Do A2Z Groups or Sync with S3 have ads?
Neither A2Z Groups nor Sync with S3 shows ads.
Which is updated more often, A2Z Groups or Sync with S3?
A2Z Groups ships an update every 3 weeks, and Sync with S3 every 2 months. Most recently, A2Z Groups was updated on October 11, 2026 and Sync with S3 on October 2, 2026.

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