Underlayer vs PaintGenius

UNDERLAYER - STEGANOGRAPHY MADE SIMPLE Transform ordinary images into secret carriers. Hide confidential messages invisibly within photos and share them through any messenger without raising suspicion. KEY FEATURES: HIDE SECRETS • Embed text messages invisibly into any image • Two encoding modes: Hidden (invisible pixels) and Open (colored frame) • Open mode survives messenger compression (Telegram, WhatsApp, etc.) • Share processed images directly or save to gallery REVEAL MESSAGES • Extract hidden text from steganographic images • Automatic detection of encoding method • Works with images received through messengers • Share intent support - open images directly from gallery WHY UNDERLAYER? • Simple & Intuitive - No cryptography knowledge required • Messenger-Friendly - Open mode designed for compressed sharing • Privacy First - All processing happens locally on your device • Universal - Works with JPG, PNG, WebP formats • No Account Required - Start using immediately USE CASES • Private communication through public channels • Watermarking images with hidden ownership data • Secure note-taking in plain sight • Educational tool for learning steganography • Fun way to send secret messages to friends SECURITY & PRIVACY • No internet connection required for processing • Your messages never leave your device • No data collection or tracking • Complete control over your secrets PREMIUM FEATURES • No banner ads at the bottom • No interstitial ad interruptions • Process unlimited images without ad breaks HOW IT WORKS 1. Select any image from your gallery 2. Enter your secret message 3. Choose encoding mode (Hidden or Open) 4. App embeds message into image pixels 5. Share through messengers or save locally 6. Recipient opens image in Underlayer to reveal message ENCODING MODES EXPLAINED HIDDEN MODE • Message embedded invisibly in image pixels • Completely undetectable to human eye • Best for uncompressed image sharing • Lost when image is compressed by messengers OPEN MODE • Message encoded as colored frame border • Visible as decorative edge around image • Survives Telegram, WhatsApp compression • Recommended for messenger sharing INTERNATIONAL • Available in English and Russian • More languages coming soon • Automatic language detection Whether you're a privacy enthusiast, security professional, or just curious about steganography - Underlayer makes it accessible to everyone. Download now and start hiding your secrets in plain sight! Terms of use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

PaintGenius is a professional tool for general and automotive paint color matching. It supports source color management, target color setting, recipe calculation, and a comprehensive verification workflow. Key Features: - Advanced Recipe Calculation: Utilizes two distinct algorithms for precision. For general paints, a CMY-based subtractive mixing model is used. For complex automotive finishes, it employs the powerful Kubelka-Munk (K-M) theory, which simulates light absorption and scattering for superior accuracy with multi-layer and effect paints. - Iterative Optimization: A sophisticated iterative algorithm fine-tunes the paint ratios by minimizing the color difference (ΔE2000) between the mix and the target, ensuring the best possible match. - Intelligent Source Analysis: The app analyzes the quality of your source colors, assessing their contribution and effectiveness. When color difference exceeds the threshold (ΔE > 10), it blocks verification and provides smart recommendations for source color replacement. - Ideal Source Recommendation: If a good match is not possible with the current palette, the app leverages LCH color space principles to suggest an ideal set of source colors that will provide maximum mixing coverage around your target. - Advanced Settings: Fine-tune algorithm parameters including color difference thresholds, layer thickness, iteration counts, and step sizes to match your specific needs and expertise level. - General & Automotive Paint Matching: Create recipes for wall paint, furniture paint, and complex automotive paints with intelligent workflow selection. - Advanced Automotive Support: Supports 2-stage (base + clear) and 3-stage (base + effect + clear) systems for metallic and pearl paints, with automatic fallback to simpler systems when source colors are insufficient. - Multi-Angle Sampling: Capture color accurately for metallic/pearl paints at different angles (15°, 45°, 110°) to account for angle-dependent color shifts. - Smart Adjustment Suggestions: Only displays adjustment recommendations when color difference exceeds the threshold (ΔE > 2.0), avoiding unnecessary adjustments for excellent matches. - Recipe Library with Calculator: Save and manage your paint recipes with a built-in volume calculator that lets you scale recipes to any desired total volume. - Step-by-Step Verification: A guided workflow to verify and fine-tune your paint recipes for a perfect match, with automatic quality assessment. - Privacy-Focused: All your data is stored locally on your device. We do not collect any user data.