Comparison

MobileKey vs NFC Reader & Writer

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

Head to head
About

MobileKey

Manage door statuses, grant remote access, and send digital keys to friends. Receive messages from event management and view access lists. Secure actions with Touch ID.

Highlights
  • Door status overview
  • Remote door openings
  • Send digital keys (Key4Friends)
  • View access lists
  • Receive event management messages
  • Touch ID security
Features
Read full description

MobileKey app to manage DM status, access lists, remote openings, Key4Friends and reception of messages from event management. - Overview of door statuses (if DM cylinder used) - Remote openings - Sending of Key4Friends authorisations - Reading and display of access list - Reception of push messages from event management. - Use of touch ID for security-related actions (disable remote opening, Key4Friends, push messages) The locking plan is fully managed on the MobileKey web application only, which you will find at www.my-mobilekey-com. Extra information: - The app requires valid log-in data for a MobileKey locking system. You need to have a MobileKey account to be able to use the account. You can register free of charge at www.my-mobilekey-com. - Your mobile device needs to have a stable Internet connection to operate the app, such as wireless LAN or 3/4G. - Many functions are only available with the online add-on (SmartBridge). Security takes top priority: Your data is stored on an audited SimonsVoss server in Munich. You do not need to worry about data security and backups. We will do it for you and to a high standard. Instructions: - Create a free MobileKey account for your use. - Obtain all MobileKey components, such as keys and locks. - Set up the MobileKey components in the web application. You will find the precise procedure in the MobileKey manual. - Programme the components. - Test the components. - Fit the components. You will find more help in the enclosed manuals.

About

NFC Reader & Writer

Easily read and write to NFC tags, supporting various data types like text, URLs, and contact information. This app also offers tag copying, infinite copying, and erasure, along with NFC device status checks and general device information.

Highlights
  • Read all tag types (Text, URL, VCARD, Bluetooth, WIFI, Email)
  • Write custom tasks to NFC tags
  • Tag copy and copy to infinity
  • Erase NFC tags
  • NFC device status checker
  • View device information (Model, Data Usage, WiFi, Battery)
Features
Read full description

NFC Reader & Writer turns your phone into a complete NFC toolkit. Hold it near a tag to see exactly what is stored on it, then write your own tags in seconds. READ NDEF TAGS • Tag contents appear the moment your phone touches it • Text, URL, Wi-Fi, Bluetooth, vCard, email, SMS, phone number, address, app and location records • Run an action straight from the record you scanned ADVANCED TAG INSIGHTS • Security analysis with the tag's security flags • Memory breakdown — used, free and total capacity • NDEF decoder with a plain-language summary of every record • Raw data in HEX and ASCII for advanced users WRITE YOUR OWN TAGS • Build a tag from templates: text, URL, Google search, Wi-Fi, Bluetooth, vCard, email, SMS, phone, address, location and custom URL • Add several records to one tag before you write it QUICK ACTIONS ON IPHONE • Open the Quick Actions tab for one-tap access: Copy Tag, Copy Tag to Infinity, Erase Tag, Lock Tag (Read-Only) and Automations • Erase Tag wipes a tag so you can reuse it, after a confirmation • Lock Tag makes a tag permanently read-only (write-protect), after a confirmation. This is a Pro feature TAG HISTORY • Every scan is saved with its time and record count • Reopen, share or delete any entry • Export your history to CSV NFC COMPATIBILITY CHECK • Detect whether your device has NFC hardware • Check whether NFC reading is available on your iPhone • Verify read and write capability USEFUL EXTRAS • Device information at a glance • One-tap shortcuts to your system settings • Tools: compass, battery, flashlight and screen light • Dark mode • Available in 14 languages SUPPORTED TAGS ON IPHONE • Reads NDEF data on NFC Forum Type 1–5 tags: ISO 14443 (NTAG, MIFARE Ultralight, MIFARE DESFire), ISO 15693 (ICODE) and FeliCa • Writes to tags that are NDEF-formatted and not locked • iPhone cannot read MIFARE Classic, tags that are not NDEF-formatted, or bank, transit and ID cards WHAT YOU NEED 1. iPhone 7 or newer, on iOS 15 or later 2. Nothing to switch on: NFC on iPhone is always ready Free to use, supported by ads. An optional Pro upgrade removes ads and unlocks unlimited Advanced Tag Insights and Lock Tag, available monthly, yearly or as a one-time purchase. Questions or a problem? Write to support@yalintech.com and we will help. Privacy Policy: https://yalintech.com/legal/nfc/privacy Terms of Service: https://yalintech.com/legal/nfc/terms

Screenshots

MobileKey4 screens
NFC Reader & Writer4 screens

Verdict

The call

The clearest difference is rating: NFC Reader & Writer at 4.0 against MobileKey's 1.0. NFC Reader & Writer also leads on update cadence (fortnightly vs every 3 months) and ratings volume (106 vs 1). MobileKey's advantage is in-app purchases (none vs 5) and ads (none vs shown). On price, 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

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. NFC Reader & Writer sells 5 in-app purchases, starting at $4.99 per month. MobileKey asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

NFC Reader & Writer holds the better App Store score, 4.0 against 1.0. That said, the two scores are not equally well evidenced: NFC Reader & Writer has 106 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 32% of MobileKey's written reviews are positive against 13% of NFC Reader & Writer's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

MobileKey ships an update every 3 months, NFC Reader & Writer fortnightly. Both last shipped on October 21, 2026.

Scorecard7 real differences · 3 level
MobileKey versus NFC Reader & Writer: the parameters behind the verdict, then further details
ParameterMobileKeyNFC Reader & Writer
PriceFreeFree
Rating1.0 (1 ratings)4.0 (106 ratings) — better
Positive reviews32.3% of reviews — better13.3% of reviews
Number of ratings1106 — better
Update frequencyEvery 3 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
MonetizationFree — betterFree with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.3 — better15.5
Further details — not scored
Size49 MB48 MB
Age rating4+4+
DeveloperSimonsVoss Technologies GmbHYalintech

Customer experience

MobileKey

All ratings1 ratings
Positive0.0%
Neutral0.0%
Negative100.0%
Written reviews31 reviews
Positive32.3%
Neutral16.1%
Negative51.6%

NFC Reader & Writer

All ratings106 ratings
Positive76.4%
Neutral1.9%
Negative21.7%
Written reviews15 reviews
Positive13.3%
Neutral6.7%
Negative80.0%

In-app purchases

None

MobileKey

No in-app purchases

5 purchases

NFC Reader & Writer

Subscriptions3
  • Monthly Subscription3 Days trial$4.991 Month
  • Yearly Subscription3 Days trial$7.991 Year
  • Yearly Subscription3 Days trial$14.991 Year
One-time2
  • One time purchase$10.99
  • One time purchase$24.99

Questions

Is MobileKey free?
MobileKey is free to download, with no in-app purchases.
Is NFC Reader & Writer free?
NFC Reader & Writer is free to download, with in-app purchases available.
Which has better reviews, MobileKey or NFC Reader & Writer?
NFC Reader & Writer is rated higher. MobileKey averages 1.0 out of 5 from 1 ratings, while NFC Reader & Writer averages 4.0 from 106 ratings.
Do MobileKey or NFC Reader & Writer have ads?
NFC Reader & Writer shows ads; MobileKey does not.
Which is updated more often, MobileKey or NFC Reader & Writer?
MobileKey ships an update every 3 months, and NFC Reader & Writer fortnightly. Most recently, MobileKey was updated on October 21, 2026 and NFC Reader & Writer on October 21, 2026.

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