Comparison

NFC Tap vs NFC21 Tools

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

Head to head
About

NFC Tap

This app allows users to read and write NFC tags, supporting various tag types and NDEF message formats. It enables quick actions like connecting to Wi-Fi, pairing Bluetooth devices, opening URLs, and initiating calls or messages directly from NFC tags.

Highlights
  • Read/Write NFC tags
  • Support ST25 Type5 & Type4A tags
  • Read/Write NDEF Messages (URL, Text, SMS, etc.)
  • Connect to Wi-Fi devices
  • Pair Bluetooth devices
  • Initiate calls, SMS, and emails
  • Control ISO15693 commands
Features
Read full description

The NFC Tap iOS App leverages on the new NFC core feature of iOS 17, supporting the read an write of NFC tags from iPhone 7 and later devices. It gives users a new experience based on the tag's NDEF content, making it easier and faster to perform recorded actions as described below. Main Features: • Support every STMicroelectronics ST25 Type5 & Type4A series tags. • App Clip based on URL https://www.myst25.com/clip • Read/Write user memory for Type5 tags. This allows user to read, write or update the content of any Type5 tags. • ISO15693/NFC Type5 commands list User Interface. This allows user to manage all ISO15693 commands. • ISO15693/NFC Type5 custom commands list User Interface • Fast Transfer Mode using STMicroelectronics ST25DV-I2C and ST25DVC tags. • PWM Control user interface for STMicroelectronics ST25DV-PWM tags. • Read/Write any kinds of NDEF Messages, NFC Forum compliant (URL, Text, SMS, email, Call, Map, VCard, Bluetooth, Wi-Fi®, Mime and Externals) • Universal Link with URL : https://www.myst25.com • Custom App URL Scheme “nfctap://”: - This allows user to open our iOS app from any other iOS app or from the safari browser using the custom URL scheme “nfctap://” In Details, the App features several functions enabled by the NFC tag content: - Connect to Wifi devices identified by its SSID, Key password and encryption type. - Connect to Bluetooth devices: Facilitates the pairing with Bluetooth Low Energy (BLE) devices. After tapping a tag with the phone, the NFC Tap iOS App will recognize any Bluetooth pairing NDEF record and connect the phone directly to the specified device. - Open a URL in a browser: Opens a web page to the URL contained in the tag's NDEF record. - Get contact information: Displays and saves contact information (including ID picture) by tapping a tag containing a business card(vCard) message. - Geolocalize a position: Opens Apple Maps to the GPS location stored in the tag being tapped. - Initiate an SMS or Email: Opens the relevant email or SMS application with information contained in the tag being tapped. The user can then choose to send the email/SMS or edit it before sending. Use cases include, but are not limited to, customer service information for warranty or loyalty programs. - Initiate a phone call: Opens the phone service to the number contained in the tag's NDEF message. - Read a Text: Displays the text message contained in the tag being tapped. - Mime NDEF exemples: MimeType = application/pdf / MimeData = userManual.pdf - External NDEF exemples: application = video ; type = mpeg ; Data = video.mov Additionally, the NFC Tap App application include Bluetooth pairing with a ST25DV discovery board.

About

NFC21 Tools

Explore NFC technology with an advanced yet user-friendly toolset. Read, write, and manage NFC tags with support for various data types, including URLs, contacts, and Wi-Fi credentials. Organize your scanned tags with filters and access detailed information.

Highlights
  • Read and write NFC tags
  • Manage tag history with filters
  • Create standard, extended, and expert tag types
  • Support for URL, Phone, Email, SMS, FaceTime, and Shortcuts
  • Advanced options for Text, Address, Position, Contact, and Wi-Fi
  • Define custom data types (MIME-Type)
  • Share Bluetooth device IDs
Read full description

We love NFC, therefore we decided to develop our NFC21 tools. Our app offers you an advanced yet easy to use toolset to explore NFC with your iPhone. Reading as well as writing of NFC-tags is supported and wrapped in an attractive user interface. NFC21 tools greets you with a history view, which contains all NFC-Tags you have read or written. Additional filters enable you to narrow down the list to ‘Read’, ‘Written’, ‘Drafts’ or ‘Favorites’ only. Tap on an entry for more details like the serial number (uid), memory size, write lock as well as the stored content. Based on the latter, an available action is offered like opening a link in Safari or the import of v-cards into the Contacts app. Creation of own NFC-tags starts with the selection of a type. We differentiate three different types. First, the standard-type creates NFC-tags which are readable by newer iPhones (iPhone XS, XR or newer) without an additional app. Second, extended types which offer more advanced scenarios like sharing of locations, contacts or WIFI-credentials. These types require a suitable app (like NFC21 Tools or NFC21 Reader) to read and process the stored content. Lastly, the expert type allows the definition of own datatypes, which require suitable / custom apps to use them. In summary, NFC21 Tools support the following tag-types: Standard (usable without an app with iPhone XS, XR or newer): • URL: Share a link to a website with an NFC-tag. Long / complicated addresses are a problem of the past. • Phone number: Share a number with NFC – always right and directly dialable. • E-Mail: Prepare a message for a recipient, ready to send with a tap. • SMS: Create a short message for a predefined number, an optional text and ready to send in an instant. • FaceTime: Start a FaceTime conversation with a scan. • Shortcut: Execute a shortcut from the apple shortcuts app with a simple scan. Advanced (with App): • Text: Hide a text within an NFC-tag, waiting to be read by a scanning fellow. • Address: Prepare a location for maps to ease getting direction – complicated street names are not a problem anymore. • Position: Locate an exact position (treasure)? Store longitude and longitude for use in the maps app. • Contact: Make your business card smart and let others scan your data like magic. • WiFi: Share credentials and ease login with a tag scan. Expert: • Data: Allows to define custom data types (MIME-Type). • Bluetooth: Share Bluetooth device IDs for easier coupling. Recommended NFC-Tag types: • NXP NTAG 203, 213, 215, 216 Support and NFC-Tags The NFC21 Tools app is developed by the NFC21 GmbH. Do not hesitate to send feedback and feature requests to our support. We recommend NFC-Tags based on the NXP NTAG-Series. In our online-shop we offer you a broad selection of NFC-products in various shapes and colors. Furthermore, we produce custom NFC-products based on your individual requirements.

Screenshots

NFC Tap4 screens
NFC21 Tools4 screens

Verdict

The call

The clearest difference is rating: NFC21 Tools at 4.8 against NFC Tap's 4.2. NFC21 Tools also leads on iOS requirement (14.0 vs 16.6). NFC Tap's advantage is ratings volume (229 vs 32). On price, review sentiment, update cadence and ads 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

NFC21 Tools holds the better App Store score, 4.8 against 4.2. That said, the two scores are not equally well evidenced: NFC Tap has 229 ratings behind it against 32, so its average is the more settled of the two. Written reviews point the same way: 55% of NFC Tap's written reviews are positive against 57% of NFC21 Tools's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 months. The most recent releases landed on September 21, 2026 and July 6, 2026 respectively.

Scorecard3 real differences · 7 level
NFC Tap versus NFC21 Tools: the parameters behind the verdict, then further details
ParameterNFC TapNFC21 Tools
PriceFreeFree
Rating4.2 (229 ratings)4.8 (32 ratings) — better
Positive reviews55.3% of reviews56.6% of reviews — better
Number of ratings229 — better32
Update frequencyEvery 2 monthsEvery 2 months
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPodiPhone, iPod
Requires iOS16.614.0 — better
Further details — not scored
Size29 MB3 MB
Age rating4+4+
DeveloperSTMicroelectronicsNFC21 GmbH

Customer experience

NFC Tap

All ratings219 ratings
Positive79.5%
Neutral6.8%
Negative13.7%
Written reviews76 reviews
Positive55.3%
Neutral3.9%
Negative40.8%

NFC21 Tools

All ratings32 ratings
Positive96.9%
Neutral0.0%
Negative3.1%
Written reviews53 reviews
Positive56.6%
Neutral5.7%
Negative37.7%

Bugs and requests

NFC Tap

Reported bugs

12 issues
  • Unable to write to tags
  • Error indicating need to read tag first
  • No longer works
  • Cannot read, edit, or write back memory to 15693 tag
  • Crashing when scanning NXP Mifare
Show 7 more
  • Error message: 'need to read a card on the main screen'
  • App closes when scanning NXP Mifare
  • Password protection bug on iOS (cannot enter password)
  • CCFile Error with Type 5 chips on iPhone
  • Required to scan tag before reading/writing memory
  • Throws an error for CCFile
  • Unable to read ST25 chips on iPhone

Requested features

6 requests
  • Display NDEF record in HEX
  • Fix password protection bug on iOS
  • Allow importing bin files
  • Improve user-friendliness for beginners
  • Connect Digimon Vital Bracelet with VB Lab
Show 1 more
  • Remove automatic tag scan prompt on app open

NFC21 Tools

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

NFC Tap

No in-app purchases

None

NFC21 Tools

No in-app purchases

Questions

Is NFC Tap free?
NFC Tap is free to download, with no in-app purchases.
Is NFC21 Tools free?
NFC21 Tools is free to download, with no in-app purchases.
Which has better reviews, NFC Tap or NFC21 Tools?
NFC21 Tools is rated higher. NFC Tap averages 4.2 out of 5 from 229 ratings, while NFC21 Tools averages 4.8 from 32 ratings.
Do NFC Tap or NFC21 Tools have ads?
Neither NFC Tap nor NFC21 Tools shows ads.
Which is updated more often, NFC Tap or NFC21 Tools?
NFC Tap ships an update every 2 months, and NFC21 Tools every 2 months. Most recently, NFC Tap was updated on September 21, 2026 and NFC21 Tools on July 6, 2026.

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