Comparison

Sentry Interactive vs NFC

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

Head to head
About

Sentry Interactive

This app allows you to access your office or building with your iPhone or Apple Watch. Share access with others easily and securely using bank-level encryption. Multiple convenient unlock methods are available for quick entry.

Highlights
  • Tap to unlock office access
  • Share access with email
  • Apple Watch integration
  • 2-factor bank-level encryption
  • Convenient unlock methods
  • Real-time insights
Features
Read full description

Never worry about losing or forgetting your physical keycard or fob again, with Sentry Interactive you can store all your digital keys for multiple buildings in one place and unlock doors faster and more securely than ever using the Sentry Interactive iOS app. Designed for reliability, speed, and ease of use whether unlocking a single door or accessing multiple sites. With a simple UI design, lightning fast launch speeds, and high security and stability levels, users can unlock doors in less than 0.5 seconds using NFC tap-to-unlock technology, QR code scan, or using our iOS Widget. Access the Sentry Interactive app instantly via background NFC by simply tapping the NFC Smart Access Tile next to the door you wish to unlock. This will take you directly to the app, where you can unlock the door. Mobile credentials stored in the Sentry Interactive app are encrypted at rest and adhere to NIST cybersecurity best practices. Don’t have the Sentry Interactive mobile access software integrated with the access control systems in your buildings yet? Get in touch or find out more at https://sentryinteractive.com

About

NFC

Easily read, write, and lock NFC tags with this utility app. It supports various tag types, allows writing text or URLs, and offers pre-built templates for common tasks like Wi-Fi logins and contact cards. You can also erase tags and set passwords.

Highlights
  • Read NFC tag data
  • Write text and URLs to NFC tags
  • Lock NFC tags to make them read-only
  • Pre-built templates for common NFC tasks
  • Set and remove NFC tag passwords
  • Erase NFC tags
Features
Read full description

NFC - Reader & Writer provides a simple and easy-to-use solution to Read, Write, and Lock an NFC Tag. Read: - Tap the Read button to read a compatible NFC Tag. - Opens URL's if allows in settings - Manufacturer & model (NTAG213, NTAG215, Ultralight, Mifare, etc.) - Serial number & tech details - Memory size, tag type & available technologies - iCloud-Synced Tag Read History Write: - Type in text then press the write button to write to an NFC Tag. - Write in text or URL (using https:// format). - Save any template or stack you create Create useful NFC tags in seconds with prebuilt templates: - Wi-Fi Login - Contact Card - Bluetooth - Location / Maps - Website Link - Email - SMS - Custom Text or NDEF Records Lock: - Press the lock button to make an NFC Tag "read only" meaning you will no longer be able to write to that same NFC Tag (This is permanent) Tools: - Set or remove NFC passwords - Erase tags *Works with iPhone 7 or newer* More features to come!

Screenshots

Sentry Interactive4 screens
NFC4 screens

Verdict

The call

The clearest difference is review sentiment: NFC at 60% against Sentry Interactive's 13%. NFC also leads on rating (4.3 vs 2.6) and update cadence (fortnightly vs monthly). Sentry Interactive's advantage is in-app purchases (none vs 2) and ads (none vs shown). On price 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. NFC sells 2 in-app purchases, starting at $0.49 per month. Sentry Interactive asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

NFC holds the better App Store score, 4.3 against 2.6. That said, the two scores are not equally well evidenced: NFC has 96 ratings behind it against 14, so its average is the more settled of the two. Written reviews point the same way: 13% of Sentry Interactive's written reviews are positive against 60% of NFC's.

UpkeepUpdate frequency

Sentry Interactive ships an update monthly, NFC fortnightly. The most recent releases landed on September 30, 2026 and October 6, 2026 respectively.

Scorecard8 real differences · 2 level
Sentry Interactive versus NFC: the parameters behind the verdict, then further details
ParameterSentry InteractiveNFC
PriceFreeFree
Rating2.6 (14 ratings)4.3 (96 ratings) — better
Positive reviews13.3% of reviews60.0% of reviews — better
Number of ratings1496 — better
Update frequencyMonthlyFortnightly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPod, Apple Watch — betteriPhone
Requires iOS15.5 — better16.0
Further details — not scored
Size44 MB16 MB
Age rating4+9+
DeveloperDoordeck LimitedCameron Nazemi

Customer experience

Sentry Interactive

All ratings14 ratings
Positive35.7%
Neutral14.3%
Negative50.0%
Written reviews15 reviews
Positive13.3%
Neutral13.3%
Negative73.3%

NFC

All ratings96 ratings
Positive82.3%
Neutral2.1%
Negative15.6%
Written reviews50 reviews
Positive60.0%
Neutral4.0%
Negative36.0%

Bugs and requests

Sentry Interactive

Not enough reviews yet to summarise bugs or requests.

NFC

Reported bugs

8 issues
  • Full tag text truncated
  • App became unusable
  • Doesn't open URLs
  • No read on iPhone 15 Pro
  • Doesn't read NFC tags
Show 3 more
  • Not working at all
  • Can't get all scans
  • Kodu okumuyor

Requested features

7 requests
  • Automatic scan on app open
  • Dark mode icon
  • Formatting NFC tag
  • SSID WiFi option
  • Ad-free version
Show 2 more
  • Reset NFC chip
  • Clear NFC chip to factory default

In-app purchases

None

Sentry Interactive

No in-app purchases

2 purchases

NFC

Subscriptions1
  • NFC Pro (Monthly)$0.491 Month
One-time1
  • NFC Pro$0.99

Questions

Is Sentry Interactive free?
Sentry Interactive is free to download, with no in-app purchases.
Is NFC free?
NFC is free to download, with in-app purchases available.
Which has better reviews, Sentry Interactive or NFC?
NFC is rated higher. Sentry Interactive averages 2.6 out of 5 from 14 ratings, while NFC averages 4.3 from 96 ratings.
Do Sentry Interactive or NFC have ads?
NFC shows ads; Sentry Interactive does not.
Which is updated more often, Sentry Interactive or NFC?
Sentry Interactive ships an update monthly, and NFC fortnightly. Most recently, Sentry Interactive was updated on September 30, 2026 and NFC on October 6, 2026.

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