Comparison

Constant Contact vs SentriKey Access+

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

Head to head
About

Constant Contact

This app is an all-in-one marketing platform for small businesses. It allows users to create and manage email, social media, and SMS campaigns, track performance, and streamline contact management with a built-in CRM. Get started quickly with intuitive tools and AI assistance for content generation.

Highlights
  • Create professional email campaigns
  • Track campaign performance
  • Streamline contact management (CRM)
  • Compose social posts
  • Manage brand assets on the go
  • AI content assistance
Features
Read full description

Join the thousands of small business marketers who rated Constant Contact a Top 50 Marketing and Digital Advertising Software and Top 100 Global Software Company on G2 in 2025! Drive sales, monitor campaigns and manage contacts on the go! Constant Contact is an all-in-one marketing platform built for small businesses. The Constant Contact mobile app is the perfect companion app and helps you connect with your audience, manage campaigns, and grow your business from anywhere. With an intuitive design and powerful email, social and SMS marketing tools, you can get started in minutes! CREATE PROFESSIONAL EMAIL CAMPAIGNS • Design newsletters and promotional emails optimized for mobile • Edit and schedule emails, even when you are away from your computer • Generate content for announcements, newsletters, or promotions in a flash with AI assistance TRACK CAMPAIGN PERFORMANCE • Track your email campaigns, newsletters, and automations from anywhere • Monitor open, clicks, and engagement rates as they’re happening • Track your subscriptions in real-time and watch your number of contact profiles grow • Refine your strategy based on reports & analytics for email and social STREAMLINE CONTACT MANAGEMENT WITH A MARKETING CRM • Import new contacts directly from your mobile device • Access your contact profiles from anywhere • Capture new contact information with a built-in business card scanner • Segment your lists to send targeted emails • See who’s joined your list from landing pages and sign-up forms COMPOSE SOCIAL POSTS • Post to Facebook, Instagram & LinkedIn at once • Track engagement across social platforms, all from one place • Integrate email and social media efforts for broader reach MANAGE YOUR BRAND ON THE GO • Work from anywhere with content management at your fingertips • Capture and upload images directly from your mobile device • Store your organization’s logos and images in your library ACCESS AWARD-WINNING SUPPORT • Talk to a live representative when you need support • Access free training to increase ROI

About

SentriKey Access+

This smart lock solution removes the need for physical keys or codes. Users can release a key from a lockbox via the app using Bluetooth or NFC. It also allows for note-taking and photo uploads to track property access and issues.

Highlights
  • Keyless entry via app
  • Bluetooth and NFC connectivity
  • Key bin release function
  • Add notes and photos
  • View past access notes
  • Track visit progress
Features
Read full description

Say goodbye to the hassle of keyed entry with SentriKey Access! This smart lock solution eliminates the need for remembering codes or carrying around a bulky key ring. Simply open the app, press the “Ent” button on the device, and the key bin will release the key.   With Bluetooth and NFC technology, SentriKey Access provides a seamless connection to your lockbox. During your visit, you can keep track of your progress by adding notes and photos, and you can even view past notes to see if any issues have been addressed. Enjoy a smarter, more convenient way to manage your keyed entry with SentriKey Access!

Screenshots

Constant Contact4 screens
SentriKey Access+4 screens

Verdict

The call

The clearest difference is rating: Constant Contact at 4.8 against SentriKey Access+'s 1.0. Constant Contact also leads on review sentiment (34% vs 0%) and ratings volume (11K vs 1). SentriKey Access+'s advantage is iOS requirement (13.2 vs 18.0). On price, update cadence, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Constant Contact holds the better App Store score, 4.8 against 1.0. That said, the two scores are not equally well evidenced: Constant Contact has 11K ratings behind it against 1, so its average is the more settled of the two. Written reviews point the same way: 34% of Constant Contact's written reviews are positive against 0% of SentriKey Access+'s.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly fortnightly. The most recent releases landed on October 19, 2026 and October 9, 2026 respectively.

Scorecard4 real differences · 6 level
Constant Contact versus SentriKey Access+: the parameters behind the verdict, then further details
ParameterConstant ContactSentriKey Access+
PriceFreeFree
Rating4.8 (11K ratings) — better1.0 (1 ratings)
Positive reviews33.6% of reviews — better0.0% of reviews
Number of ratings11K — better1
Update frequencyFortnightlyFortnightly
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPod
Requires iOS18.013.2 — better
Further details — not scored
Size286 MB96 MB
Age rating4+4+
DeveloperConstant Contact, Inc.Keynetics

Customer experience

Constant Contact

All ratings10,645 ratings
Positive95.6%
Neutral2.2%
Negative2.2%
Written reviews146 reviews
Positive33.6%
Neutral5.5%
Negative61.0%

SentriKey Access+

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

Bugs and requests

Constant Contact

Reported bugs

3 issues
  • App crashes when accessing photo library
  • Inconsistent sync between app and website
  • Unreliable email delivery from mobile app

Requested features

3 requests
  • Ability to edit emails created on desktop
  • Improved mobile-friendly templates
  • Real-time contact and campaign analytics

SentriKey Access+

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

Constant Contact

No in-app purchases

None

SentriKey Access+

No in-app purchases

Questions

Is Constant Contact free?
Constant Contact is free to download, with no in-app purchases.
Is SentriKey Access+ free?
SentriKey Access+ is free to download, with no in-app purchases.
Which has better reviews, Constant Contact or SentriKey Access+?
Constant Contact is rated higher. Constant Contact averages 4.8 out of 5 from 11K ratings, while SentriKey Access+ averages 1.0 from 1 ratings.
Do Constant Contact or SentriKey Access+ have ads?
Neither Constant Contact nor SentriKey Access+ shows ads.
Which is updated more often, Constant Contact or SentriKey Access+?
Constant Contact ships an update fortnightly, and SentriKey Access+ fortnightly. Most recently, Constant Contact was updated on October 19, 2026 and SentriKey Access+ on October 9, 2026.

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