# Contacts+ | Address Book vs A2Z Groups

The clearest difference is monetization model: Contacts+ | Address Book at free with in-app purchases against A2Z Groups's subscription. A2Z Groups's advantage is review sentiment (82% vs 60%). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Contacts+ | Address Book sells 8 in-app purchases, starting at $9.99 per month and A2Z Groups sells 4 in-app purchases, starting at $0.99 per year. Whichever you choose, the download price is not the number that matters.

On the App Store both sit at effectively the same score — 4.5 for Contacts+ | Address Book against 4.6 for A2Z Groups. Both are backed by a comparable volume of ratings — 5.8K and 3.9K respectively. Written reviews are what separate them: 60% of Contacts+ | Address Book's written reviews are positive against 82% of A2Z Groups's.

Contacts+ | Address Book ships an update every 2 weeks, A2Z Groups every 3 weeks. The most recent releases landed on September 26, 2026 and September 24, 2026 respectively.

## The numbers

| Metric | Contacts+ | Address Book | A2Z Groups |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.5 (5.8K ratings)](https://appshunter.io/ios/app/contacts-plus-address-book/id579616837/reviews) | **[4.6 (3.9K ratings)](https://appshunter.io/ios/app/a2z-groups/id622492105/reviews)** |
| Number of ratings | **5.8K** | 3.9K |
| Positive reviews | 60.0% of reviews | **81.9% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | **Free with in-app purchases** | Subscription |
| Size | 52 MB | 17 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [FullContact Inc.](https://appshunter.io/developer/489685226) | [Playa Apps](https://appshunter.io/developer/449814913) |

## What reviewers say

### Contacts+ | Address Book

[App page](https://appshunter.io/ios/app/contacts-plus-address-book/id579616837)

This cloud-based address book simplifies contact management by syncing across devices and accounts. It offers features like contact deduplication, business card scanning, and automatic enrichment to keep your information organized and up-to-date.

**Highlights:** Cross-device, cross-platform sync, Contact deduplication, Scan and save business cards, Tag contacts and add notes, Automatic contact enrichment, Spam blocking

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (Monthly) | $9.99 | per month |
| Contacts+ Quarterly Premium | $13.99 | per month |
| Contacts+ Monthly Premium | $15.99 | per month |
| Premium (Quarterly) | $29.99 | per 3 months |
| Contacts+ Quarterly Premium | $39.99 | per 3 months |
| Premium (Annual) | $99.99 | per year |
| Contacts+ Yearly Premium | $119.99 | per year |
| Pack of 100 business cards | $9.99 | one-time |

**What reviewers like**

- 🚀 Easy contact management
- 🔍 Useful contact enrichment
- 📚 Great contact organization
- 🔗 Seamless sync across platforms

**What reviewers complain about**

- 🐛 Unreliable sync and data loss
- 💰 Expensive subscription model
- 🔍 Inaccurate contact information
- 🤯 Confusing user experience

**Reported bugs**

- App crashes and freezes on latest iOS versions
- Sync issues causing duplicate and missing contacts
- Inability to restore deleted or lost contacts

**Requested features**

- Native integration with Outlook and Microsoft 365
- Improved contact deduplication and merging
- Better support for international contacts and languages
- Customizable contact fields and views


### A2Z Groups

[App page](https://appshunter.io/ios/app/a2z-groups/id622492105)

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:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium (1 Year) | $0.99 | per year |
| Premium (Lifetime Access) | $1.99 | one-time |
| Make Contribution | $4.99 | one-time |
| Larger Contribution | $9.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 🚀 Efficient group messaging
- 💡 Helpful for organizing contacts
- 🔒 Reliable privacy policy
- 👍 Customizable groups

**What reviewers complain about**

- 🐛 Occasional bugs and crashes
- 🐛 Issues with message delivery
- 🐛 Syncing problems after updates
- 🐛 Duplicate contacts
- 🐛 Disappearing notes/data

**Reported bugs**

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

**Requested features**

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


## Frequently asked questions

### Is Contacts+ | Address Book free?

Contacts+ | Address Book is free to download, with in-app purchases available.

### Is A2Z Groups free?

A2Z Groups is free to download, with in-app purchases available.

### Which has better reviews, Contacts+ | Address Book or A2Z Groups?

A2Z Groups is rated higher. Contacts+ | Address Book averages 4.5 out of 5 from 5.8K ratings, while A2Z Groups averages 4.6 from 3.9K ratings.

### Do Contacts+ | Address Book or A2Z Groups have ads?

Neither Contacts+ | Address Book nor A2Z Groups shows ads.

### Which is updated more often, Contacts+ | Address Book or A2Z Groups?

Contacts+ | Address Book ships an update every 2 weeks, and A2Z Groups every 3 weeks. Most recently, Contacts+ | Address Book was updated on September 26, 2026 and A2Z Groups on September 24, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*