Visible PIN vs Metrix Toolkit

Visible PIN — your PIN code in plain sight… but not for everyone. Forget scribbled notes and hidden memos! Visible PIN is a smart and secure app for storing your bank card PINs by turning secrecy into visibility. At its core is a simple yet brilliant idea: you see a grid of digits, and any digit can be highlighted in color. You decide which cells are “active”—that’s where your PIN is hidden. To you, it’s an obvious sequence. To anyone else glancing at your phone, it’s just a colorful table with no meaning. How it works: — Create a new “card” and give it a name (e.g., “My Favorite Bank Card”). — Choose your PIN and highlight the corresponding digits in the grid using your chosen color. — The app never stores your actual PIN—only your unique coloring pattern. — At any time, you can recall your code just by looking at the highlighted cells. Security through obscurity Even if someone sees your screen, they won’t know: — In what order to read the digits, — Which colors are meaningful and which are just decoration. This isn’t encryption—it’s visual camouflage based entirely on your personal logic. Flexibility and control — Change highlight colors to match your mood or differentiate between cards. — Add decoy highlights to further confuse onlookers. Visible PIN doesn’t store your secrets. It makes them invisible in plain sight. Because the best password is the one nobody’s looking for.

Metrix gives you a clean set of tools for the sensors, radios, network routes, clocks, audio hardware, and device details already built into your iPhone. Open the app when you want a quick look at GPS speed, compass heading, gyroscope motion, barometer pressure, battery status, Wi-Fi and cellular details, Bluetooth signals, NFC tags, camera hardware, storage, memory, screen and graphics details, audio output, biometrics, or LiDAR distance on supported iPhone models. NFC: read and inspect tags in depth chip maker, memory size, NDEF records, and decoded payloads. Metrix recognizes smart cards, transit cards, digital IDs, passports, and security keys. Write URL, text, contact, email, phone, SMS, location, and App Store records to blank tags, then erase them or permanently lock them as read-only. Bluetooth: scan nearby devices with live signal strength, decoded advertisements (iBeacon, Eddystone, device type), and a GATT inspector that connects and reads device info, battery, and services. Metrix also includes a Clock tool for local time, UTC comparison, time-zone details, and locale reference, plus Audio tools for speaker details, frequency testing, bass testing, and sound output checks. Free tools include live readouts, Checkup, public route lookup, Clock, Audio, the LiDAR dot-map distance view, NFC reading and basic writing, and Bluetooth scanning with GATT inspection. Metrix Pro is a one-time purchase that adds Find It, a live Bluetooth proximity finder with a distance ring, intensifying haptics, a direction hint, and 1 m calibration. Plus saved history, recordings, snapshots, saved Bluetooth, Wi-Fi, and NFC items, device nicknames, watches, a trip computer, exports and reports, NFC import/export, advanced NFC writing (Wi-Fi, custom MIME, external, and multi-record tags), and Wi-Fi/cellular speed tests. Metrix does not require an account and does not use ads, analytics, or tracking. Anything you save with Pro stays on your device unless you choose to export or share it. Readings depend on device hardware, iOS permissions, signal quality, location quality, and sensor availability.