Contacts+ | Address Book vs ACTS Authenticator
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Contacts+ | Address Book
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.
- Cross-device, cross-platform sync
- Contact deduplication
- Scan and save business cards
- Tag contacts and add notes
- Automatic contact enrichment
- Spam blocking
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Meet your new favorite contact management tool, Contacts+. Contacts+ is a cloud-based address book designed to take the hassle out of contact management so you can focus on what matters most - relationships. Truly multi-platform, Contacts+ syncs your contacts across your devices as well as across various accounts you may store contacts in (such as Gmail, Exchange, Office365, and iCloud). Why use Contacts+? • Contact deduplication - Consolidate all your information about each contact into one, holistic profile. Never wonder again which pieces of contact information are correct. • Cross-device, cross-platform sync - Your address book is now available everywhere. • Scan & save business cards - Upload a picture of scanned business card, and we'll transcribe the information & add it to your address book. • Organized your way - Tag contacts to create custom groupings, or leave notes for added context. • Automatic contact enrichment - We'll help fill in the details about your contacts (photos, social profiles, & more) by adding content we find from around the web. • Spam Block - We help enable you to connect with friends and colleagues and block unwanted people, telemarketers, and spam. Do even MORE with Contacts+ Premium. With Premium, you can: • Scan MORE business cards - Scan & save up to 1,000 business cards a year. • Sync multiple accounts - Sync up to 5 address books & keep your contacts in sync across multiple platforms. • Choose Monthly or Annual Premium subscription - Pick a plan that fits your needs. Contacts+ is free to download and use, and Contacts+ Premium is available by subscription and unlocks all of the features above. Prices may vary by location. Payment will be charged to your Apple ID account at the confirmation of purchase. The subscription automatically renews unless it is canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours prior to the end of the current period. You can manage and cancel your subscriptions by going to your App Store account settings after purchase. Privacy & Terms of Service This App is for professional use and not intended for children under the age of 16, and we will never intentionally collect any information from users under the age of 16. For more information, please visit our privacy policy. Privacy Policy: https://www.contactsplus.com/privacy Terms of Use: https://www.contactsplus.com/terms Questions, feedback, just want to say "hi"? You can email us at support@contactsplus.com!
ACTS Authenticator
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Register your account at https://accounts.acts.nadcloud.net/account then use this app to: - Receive notifications to approve an authentication on your account. - Generate onetime codes (OTP) for your account or any other service.
Screenshots
Verdict
The clearest difference is in-app purchases: ACTS Authenticator at none against Contacts+ | Address Book's 8. Contacts+ | Address Book's advantage is update cadence (every 2 weeks vs every 2 months). On price, ads, device support and iOS requirement 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
Both are free to download. Contacts+ | Address Book sells 8 in-app purchases, starting at $9.99 per month. ACTS Authenticator asks for nothing beyond the download.
Contacts+ | Address Book ships an update every 2 weeks, ACTS Authenticator every 2 months. The most recent releases landed on September 29, 2026 and September 13, 2026 respectively.
| Parameter | Contacts+ | Address Book | ACTS Authenticator |
|---|---|---|
| Price | Free | Free |
| Rating | 4.5 (5.8K ratings) — better | — |
| Positive reviews | 60.0% of reviews | — |
| Number of ratings | 5.8K — better | — |
| Update frequency | Every 2 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPod |
| Requires iOS | 15.0 — better | 15.6 |
| Further details — not scored | ||
| Size | 52 MB | 45 MB |
| Age rating | 17+ | 17+ |
| Developer | FullContact Inc. | North American Division of Seventh-day Adventists |
Bugs and requests
Contacts+ | Address Book
Reported bugs
3 issues- App crashes and freezes on latest iOS versions
- Sync issues causing duplicate and missing contacts
- Inability to restore deleted or lost contacts
Requested features
4 requests- Native integration with Outlook and Microsoft 365
- Improved contact deduplication and merging
- Better support for international contacts and languages
- Customizable contact fields and views
ACTS Authenticator
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Contacts+ | Address Book
- Premium (Monthly)$9.991 Month
- Contacts+ Quarterly Premium$13.991 Month
- Contacts+ Monthly Premium$15.991 Month
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- Premium (Quarterly)$29.993 Months
- Contacts+ Quarterly Premium$39.993 Months
- Premium (Annual)$99.991 Year
- Contacts+ Yearly Premium$119.991 Year
- Pack of 100 business cards$9.99
ACTS Authenticator
No in-app purchases
Questions
Is Contacts+ | Address Book free?
Is ACTS Authenticator free?
Do Contacts+ | Address Book or ACTS Authenticator have ads?
Which is updated more often, Contacts+ | Address Book or ACTS Authenticator?
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