Sentry Interactive vs Smart NFC Tools
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Tap to unlock office access
- Share access with email
- Apple Watch integration
- 2-factor bank-level encryption
- Convenient unlock methods
- Real-time insights
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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
Smart NFC Tools
Easily read, inspect, and modify NFC tags with this intuitive tool. Write to tags in various formats to trigger actions like opening websites or making calls. Prioritizes user privacy by operating entirely offline.
- Read NFC tag content
- Inspect and modify NFC tags
- Erase, lock, and copy tags
- Write NFC tags in various formats
- Trigger phone calls or open websites
- 100% offline operation
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Smart NFC Tools is the most accessible and easy to use NFC Reader and Writer for mobile devices! With a simple user interface and powerful tools you can interact with NDEF-Formatted NFC cards without any external hardware! - Read, Inspect and modify: Read a tag by touching the back of your device against it and Smart NFC Tools will show you a full report on the tag's content and give you options such as erase, lock and copy. It's super easy! - Write in many formats: Smart NFC Tools enables you to write NFC tags in popular formats that allow for custom interactions such as opening a website or triggering a phone call just by touching the tag with a compatible device! - Note about privacy: Smart NFC Tools works 100% offline, without any personal or content data being sent to an external server or third party server. Your privacy is our priority! Embrace the world of NFC technologies using your phone or tablet! Smart NFC Tools is now available for all iOS devices!
Screenshots
Verdict
The clearest difference is rating: Smart NFC Tools at 4.6 against Sentry Interactive's 2.6. Smart NFC Tools also leads on update cadence (weekly vs monthly) and ratings volume (477 vs 14). Sentry Interactive's advantage is in-app purchases (none vs 1). 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. Smart NFC Tools sells 1 one-off in-app purchase. Sentry Interactive asks for nothing beyond the download.
Smart NFC Tools holds the better App Store score, 4.6 against 2.6. That said, the two scores are not equally well evidenced: Smart NFC Tools has 477 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 30% of Smart NFC Tools's.
Sentry Interactive ships an update monthly, Smart NFC Tools weekly. The most recent releases landed on September 30, 2026 and September 28, 2026 respectively.
| Parameter | Sentry Interactive | Smart NFC Tools |
|---|---|---|
| Price | Free | Free |
| Rating | 2.6 (14 ratings) | 4.6 (477 ratings) — better |
| Positive reviews | 13.3% of reviews | 30.3% of reviews — better |
| Number of ratings | 14 | 477 — better |
| Update frequency | Monthly | Weekly — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free — better | Free with in-app purchases |
| Devices | iPhone, iPod, Apple Watch | iPhone, iPad, iPod |
| Requires iOS | 15.5 — better | 15.6 |
| Further details — not scored | ||
| Size | 44 MB | 35 MB |
| Age rating | 4+ | 4+ |
| Developer | Doordeck Limited | Arthur Eduardo Skaetta Alvarez Desenvolvimento de Software LTDA. |
Customer experience
Sentry Interactive
Smart NFC Tools
Bugs and requests
Sentry Interactive
Not enough reviews yet to summarise bugs or requests.
Smart NFC Tools
Reported bugs
6 issues- Doesn't work to save contact card
- App glitches
- Doesn't work to read card and fob
- Paid for unlock, but restore doesn't work after iOS update
- Paid for ability to lock tags, but feature does not work
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- App not working after 15 minutes, even after purchase
Requested features
2 requests- Add social media to chips
- Ability to add multiple items to card after paying
In-app purchases
Sentry Interactive
No in-app purchases
Smart NFC Tools
- NFC Tools Premium$1.99
Questions
Is Sentry Interactive free?
Is Smart NFC Tools free?
Which has better reviews, Sentry Interactive or Smart NFC Tools?
Do Sentry Interactive or Smart NFC Tools have ads?
Which is updated more often, Sentry Interactive or Smart NFC Tools?
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