Comparison

Krinkle LDAR Tracker 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

Krinkle LDAR Tracker

Features
Read full description

Krinkle LDAR Tracker is a full suite of enterprise-class software that revolutionizes the Leak Detection and Repair processes at well sites and compressor stations. Go paperless: Increase your workflow and productivity with Krinkle LDAR Tracker. • Assign work orders to your LDAR Tech’s mobile device and know when they are complete • Comply with federal (0000a) and state regulations in regard to required data and reporting • Our reporting tool contains all the reports needed to track all your sites and leaks such as rolling leak logs, component leak logs, remaining leaks, delays of repairs and more • Our Standard SmartForms library was built specifically for the LDAR industry, but custom forms can be requested, built, and added to the existing app easily • LDAR Techs in the field can easily input critical data associated with well sites, gas leaks, & repair attempts • Capture images and associate your FLIR videos with specific leaks found • Free help desk support & video training included

About

NFC Reader & Writer

This app transforms your iPhone into a comprehensive NFC toolkit. Easily scan and decode various NFC tag types, then write your own custom tags with templates. It also offers advanced insights into tag data and history tracking.

Highlights
  • Read NDEF tags (Text, URL, Wi-Fi, etc.)
  • Advanced tag insights (security, memory)
  • Write custom tags from templates
  • Quick actions for tag management
  • Tag history logging and export
  • NFC compatibility check
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

Krinkle LDAR Tracker3 screens
NFC Reader & Writer4 screens

Verdict

The call

The clearest difference is in-app purchases: Krinkle LDAR Tracker at none against NFC Reader & Writer's 5. Krinkle LDAR Tracker also leads on ads (none vs shown) and iOS requirement (13.2 vs 15.0). NFC Reader & Writer's advantage is update cadence (fortnightly vs every 9 months). On price and device support 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. Krinkle LDAR Tracker asks for nothing beyond the download.

UpkeepUpdate frequency

Krinkle LDAR Tracker ships an update every 9 months, NFC Reader & Writer fortnightly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

Scorecard4 real differences · 6 level
Krinkle LDAR Tracker versus NFC Reader & Writer: the parameters behind the verdict, then further details
ParameterKrinkle LDAR TrackerNFC Reader & Writer
PriceFreeFree
Rating—4.0 (106 ratings) — better
Positive reviews—13.3% of reviews
Number of ratings—106 — better
Update frequencyEvery 9 monthsFortnightly — better
AdsNo — betterYes
In-app purchasesNo — betterYes
Monetization—Free with in-app purchases
DevicesiPhone, iPad, iPodiPhone, iPad, iPod, Apple Watch — better
Requires iOS13.2 — better15.0
Further details — not scored
Size59 MB37 MB
Age rating4+4+
DeveloperKrinkle, LLCYalintech

In-app purchases

None

Krinkle LDAR Tracker

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 Krinkle LDAR Tracker free?
Krinkle LDAR Tracker 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.
Do Krinkle LDAR Tracker or NFC Reader & Writer have ads?
NFC Reader & Writer shows ads; Krinkle LDAR Tracker does not.
Which is updated more often, Krinkle LDAR Tracker or NFC Reader & Writer?
Krinkle LDAR Tracker ships an update every 9 months, and NFC Reader & Writer fortnightly. Most recently, Krinkle LDAR Tracker was updated on November 2, 2026 and NFC Reader & Writer on November 3, 2026.

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