QR Kit vs Flicker Insight

Scan any QR or barcode instantly, create QR codes in your own colors, shapes and logo, and keep a private history — all on your device. QR Kit is your all-in-one QR code and barcode toolkit. Point, scan, create, and organize — no account required. ▸ NEW: MADE FOR IPHONE DUO Open a scan beside your history, Settings pages beside their list, and the QR design with its preview next to the controls. The scanner keeps its viewfinder clear of the fold. ▸ DESIGN YOUR QR CODE Make a code that looks like you. Pick its colors, change the shape of the dots and corners, add a frame with your own words, and put an emoji, a symbol or your logo in the center. A code is checked to make sure it still scans before you save it. Open any code you created later to change its design or edit its content. Free includes color presets; Pro unlocks custom colors, gradients, shapes, frames and logos. ▸ QUICK SCAN WIDGETS Tap once from Control Center (iOS 18) or from your Lock Screen widget to open the QR reader instantly. No unlocking, no searching for the app. The fastest way to scan. ▸ INSTANT SCANNING Point your camera at any QR code or barcode for instant results. You can also scan codes from photos in your library. Every scan is confirmed with haptic and sound feedback. ▸ CREATE QR CODES Create QR codes for URLs, plain text, email, phone numbers, SMS, locations, Wi-Fi networks, contact cards, calendar events, crypto payments, and social profiles. Fill in a number or email from Contacts, or pick a place on a map. Share your created QR codes instantly or save them to your photo library. Every code you create is saved to your history. ▸ AUTOMATIC HISTORY Every scan and created code is saved automatically. Today, this week, this month, or older — everything is organized by date. Filter between scanned and created codes. When you scan the same code again, you'll see how many times it's been scanned before. ▸ 18 CODE TYPES Website, WiFi network, contact card (vCard/MeCard), calendar event, phone number, email, SMS, location, social media, video, music, payment, cryptocurrency, App Store link, product barcode, and more — every type is automatically detected and classified. ▸ SEARCH, FILTER & SORT Find any scan with full-text search. Filter by type, date, source, or favorites. Sort by newest, oldest, alphabetical, category, or most frequent. ▸ FAVORITES & EDITING Star important scans for quick access. Add a title and notes to any scan, change its type. Use bulk selection to delete or favorite multiple scans at once. ▸ PRIVATE FROM THE START No account. No cloud. No tracking. Your codes and history stay on your device. Scanning, creating and searching work in airplane mode; only the map for Location codes needs a connection. ▸ EASY MANAGEMENT Copy, share, or open directly — open websites in Safari, connect to WiFi networks, save contacts. Everything with a single tap. ▸ TRY FREE Free includes 7 scans a week and 3 codes a day (URL, text, email or phone) — enough to finish a real QR job before you pay. Your 5 newest codes stay visible, and older history waits safely in your vault. ▸ PRO UNLOCKS THE VAULT Unlimited history, full search and filters, .qrkit backup & restore, Pro widgets, the Beam and Stack app icons, plus Wi-Fi, contact, event, crypto, social, SMS and location codes and the full QR design. Choose monthly, annual, or lifetime. Have feedback? Reach us at support@can.bi Privacy Policy: https://canbi.notion.site/Privacy-Policy-45f6cac95bdb825cbed381811ce5a61a Terms of Use (EULA): https://canbi.notion.site/Terms-of-Service-1cd6cac95bdb824faa1e013065196448

Desk lamps, eye-care lamps, LED bulbs, computer monitors, and smartphone screens may appear steady, while actually producing brightness fluctuations—flicker—that are difficult to detect with the naked eye. Prolonged exposure to flickering light may contribute to eye fatigue, eye strain, headaches, or even dizziness. This app helps you detect flicker that may otherwise go unnoticed. 【QUICK FLICKER TEST】 Point your camera at a light source or screen. The app collects adaptive samples at multiple shutter speeds for about 3 seconds and continuously updates the screening result. • Screening result: Flicker detected / No significant flicker detected / Unable to determine • Eye comfort assessment: Low, medium, or high risk based on the measured flicker level • Detailed metrics: Flicker index, modulation depth, dominant frequency, and brightness waveform 【MORE THAN FLICKER DETECTION】 • Ambient illuminance estimate: Provides an approximate brightness range to help you assess whether the environment is suitable for visual tasks. • Color temperature estimate: Provides an approximate color temperature for reference. 【EXPORT AND SHARE】 Generate a PDF report containing the waveform, frequency spectrum, light source image, and test conclusion, or export the raw data as a CSV file. 【PRIVACY FIRST, FULLY OFFLINE】 • No ads, no analytics SDKs, and no account required. • The app does not actively connect to the internet. All data remains on your device. • Videos created during measurement are processed temporarily and deleted immediately after analysis. Only measurement results and notes are retained. • You can clear all locally stored data at any time from Settings. 【AVAILABLE IN 12 LANGUAGES】 Simplified Chinese, Traditional Chinese, English, Japanese, Korean, French, German, Spanish, Portuguese, Russian, Arabic, and Hindi. 【IMPORTANT NOTICE】 This app provides consumer-grade screening of lighting conditions. Results may be affected by your phone camera’s frame rate, exposure, rolling shutter, and ambient light. It is not a substitute for professional photometric testing, standards compliance certification, or medical diagnosis. Privacy Policy: https://wwmmkk.github.io/Flicker-Insight/Privacy%20Policy Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/