WatchGas vs NFC Kit

WatchGas compliance mobile application manage and configurate yours WatchGas SST1 and SST4

NFC Kit reads, writes, erases and protects NFC tags. No ads, no account. READ • UID, chip type, capacity and tag status at a glance • Decodes every NDEF record type: link, text, Wi-Fi, contact card, phone, email, message, coordinates, MIME • Full memory view in HEX, ASCII or binary with colour-coded regions • Export the memory as .txt or .bin WRITE • Ten content types, each with its own form • Capacity is checked before writing, and the tag is read back and compared byte by byte • Edit, reorder and delete individual records • Erase the NDEF content or reformat the tag TAG SECURITY (NTAG213/215/216, Ultralight EV1) • Set and remove the PWD/PACK password • Choose the first protected page (AUTH0), block reads too (PROT), limit attempts (AUTHLIM) • Lock a tag permanently to read-only, behind a two-step confirmation • Passwords live in the Keychain and travel through iCloud Keychain, end-to-end encrypted HISTORY AND AUTOMATION • Every scan is saved; search, star and give tags a nickname • One-tap templates, batch writing with a counter and a per-tag error log • Copy content to another tag, back a tag up to a file, export and import history as JSON • Shortcuts actions for Siri and automations LIFETIME UNLOCK - $4.99, ONE-TIME, NO SUBSCRIPTION These three features require the purchase; everything else in the app stays free forever: • iCloud backup of the tag history • Export and import of tag data • Reading and editing raw tag memory The purchase restores on every device on the same Apple Account, and the app has a Restore Purchases button. WHAT iOS DOES NOT ALLOW - SAID UP FRONT iOS does not let apps read MIFARE Classic data (only the UID), copy a UID onto another tag, emulate a tag, or join Wi-Fi automatically from a tag. These are system limits that no app gets past. The app includes a page explaining all of them. Requires iOS 18, so an iPhone XR or newer.