ScreenRuler vs Barcode Info

Turn your iPhone into a precise ruler — no physical ruler needed. ScreenRuler uses your device's actual pixel density (PPI) to display accurate centimeter and inch graduations directly on screen. Place any object alongside the ruler and drag two handles to measure it instantly. HOW TO MEASURE 1. Place the object next to the left edge of the screen 2. Drag the top and bottom handles to align with the object's edges 3. Read the live measurement displayed between the handles FEATURES • Accurate ruler based on your iPhone's true screen PPI • cm mode: 1 mm graduations, labeled every 1 cm • inch mode: 1/8 inch subdivisions, labeled every 1 inch • Two drag handles for precise range selection • Live measurement display — updates as you drag • Switch between cm and inch instantly • DPI calibration using a standard credit card (short edge 5.4 cm) for extra precision • Haptic feedback at every 1 cm / 1 inch boundary • Dark and light theme • Works offline — no internet required • Collapsible control panel — stays out of the way CALIBRATION Every iPhone screen has a slightly different physical size. Use the built-in DPI calibration with a standard credit card to fine-tune accuracy to your exact device. Perfect for quick measurements when you don't have a ruler on hand.

Point your camera at any barcode and see what it actually encodes. No ads, no sign-up, and scanning works with no connection at all. Barcode Info identifies the code type, verifies the check digit, and tells you where the product's barcode was registered. Scan a QR code and it classifies the content: link, Wi-Fi network, contact card, email, phone number, and more. Scan a shipping label and it reads the fields the label carries. WHAT YOU GET - Symbology identification: EAN-13, EAN-8, UPC-A, UPC-E, Code 128, Code 39, Code 93, Codabar, ITF-14, QR Code, Data Matrix, Aztec, PDF417 - Check-digit validation for product codes (GTIN-8/12/13/14), with UPC-E expanded to its UPC-A equivalent - Country of registration from the GS1 prefix, with country flags, including special ranges such as in-store codes, ISBN, and ISSN - GS1 label fields on GS1-128 and GS1 DataMatrix codes: batch or lot, best before and expiry dates, serial number, pallet number (SSCC), weight and size - Content detection for QR codes: links (with one-tap open in browser), Wi-Fi, contacts, email, phone, SMS, location, calendar events - A photo of every scan: the camera frame the code was found in - Notes on any scan, with your earlier notes offered as one-tap chips - Filters for your history: by kind of code, by date, or scans with a note, a photo or a failed check digit - Scan history saved on your device: reopen any result, swipe to delete, or clear everything at once - On iPad held sideways, the list and the scan side by side - Scan from the Home Screen: press and hold the app icon and pick Scan BARCODE INFO PREMIUM An optional one-time purchase, not a subscription. Everything above stays free. Premium adds: - Folders: sort scans into folders, each with a color of your choice - Export: send your history out as a CSV or text file - Scan one after another: start the next scan straight from the result - More photos per scan: add your own, like the back of the pack or the price tag - Quick preview: hold a scan in the list to see what it holds Premium works with Family Sharing. HONEST BY DESIGN The GS1 prefix shows where the manufacturer registered the barcode, not where the product was made. Barcode Info says so, plainly, instead of pretending otherwise. In-store and company-internal codes are labeled as such rather than mapped to a misleading country. PRIVATE BY DESIGN Scanning and everything the app works out from a code happen on your device. The app goes online only when you buy or restore Premium, and Apple handles the payment. No accounts, no ads, no analytics, no tracking. Your scan history and photos stay on your device.