--- title: "Underlayer - Reviews, Revenue and Downloads in Macao SAR China | Apple App Store" description: "UNDERLAYER - STEGANOGRAPHY MADE SIMPLE Transform ordinary images into secret carriers. Hide confidential messages invisibly within photos and share them through any messenger without raising suspici" --- # Underlayer — Macao SAR China ![Underlayer App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple221/v4/79/3c/e6/793ce6fb-2426-f597-b04b-b3afda42e090/AppIcon-0-0-1x_U007epad-0-1-85-220.png/434x0w.png) **Developer:** [Mihail Rukavishnikov](https://apptail.io/developer/mihail-rukavishnikov-IsvtI) **Category:** Utilities **Rating:** N/A (0 ratings) **Price:** Free **Bundle ID:** space.mef.underlayer **Store:** Apple App Store **Country:** Macao SAR China **Version:** 1.0.2 (released 2026-08-22) **Original Release:** 2025-10-03 **Languages:** English **App Store Link:** [Download on Apple App Store](https://apps.apple.com/mo/app/app/id6753363956) **AppTail Page:** [https://apptail.io/app/underlayer-znBx/macau](https://apptail.io/app/underlayer-znBx/macau) ## Underlayer Description 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: ## Underlayer Screenshots - [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/1b/e7/33/1be7333a-b1f6-1c5c-5244-7af57dc01ac9/Simulator_Screenshot_-_iPhone_16_Pro_-_2025-10-03_at_11.34.58.png/1242x2688.png) - [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/05/55/0e/05550ed5-a98f-e35e-b2a1-288e2feb26a4/Simulator_Screenshot_-_iPhone_16_Pro_-_2025-10-03_at_11.35.05.png/1242x2688.png) - [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/e5/ad/e2/e5ade29c-21bb-452e-d32d-7cfa51d7efa2/Simulator_Screenshot_-_iPhone_16_Pro_-_2025-10-03_at_11.35.28.png/1242x2688.png) - [Screenshot 4](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/8b/35/fa/8b35fa2c-843d-136e-0879-ed1219cefd43/Simulator_Screenshot_-_iPhone_16_Pro_-_2025-10-03_at_11.35.32.png/1242x2688.png) - [Screenshot 5](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource211/v4/9f/22/9f/9f229f7a-ea2e-c5ba-a22a-bf57e2b95333/Simulator_Screenshot_-_iPhone_16_Pro_-_2025-10-03_at_11.35.45.png/1242x2688.png) - [Screenshot 6](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/46/c9/ed/46c9eda8-f1ed-6fab-5d44-32ce575cd883/Simulator_Screenshot_-_iPhone_16_Pro_-_2025-10-03_at_11.36.02.png/1242x2688.png) - [Screenshot 7](https://is1-ssl.mzstatic.com/image/thumb/PurpleSource221/v4/ce/8f/06/ce8f0699-8ad6-ed43-0fb3-5d352e8013bb/Simulator_Screenshot_-_iPhone_16_Pro_-_2025-10-03_at_11.36.08.png/1242x2688.png) ## Underlayer In-App Purchases | Item | Price | |------|-------| | Premium | USD 2.99 | ## Apps Similar to Underlayer - [Base64 Encoder Decoder](https://apptail.io/app/base64-encoder-decoder-kDtb/macau) - [EYE APP - Teltonika](https://apptail.io/app/eye-app-teltonika-Txmc/macau) - [Paranoia Text Encryption Lite](https://apptail.io/app/paranoia-text-encryption-lite-fcxd/macau) - [Big Digital Clock Widget](https://apptail.io/app/big-digital-clock-widget-VCbn/macau) - [Netdata Mobile](https://apptail.io/app/netdata-mobile-zRYo/macau) - [Kryptos Tools](https://apptail.io/app/kryptos-tools-uQdp/macau) - [Cipher Pixel](https://apptail.io/app/cipher-pixel-OOIp/macau) - [PixelMask](https://apptail.io/app/pixelmask-GoZq/macau) - [Weekstack](https://apptail.io/app/weekstack-Iczv/macau) - [Stego](https://apptail.io/app/stego-VlBx/macau) ## Underlayer Available In - [Macao SAR China](https://apptail.io/app/underlayer-znBx/macau) - [Portugal](https://apptail.io/app/underlayer-znBx/portugal) - [South Africa](https://apptail.io/app/underlayer-znBx/south-africa) --- ## About AppTail [AppTail](https://apptail.io) is a mobile app intelligence platform providing app analytics, ASO (App Store Optimization) tools, keyword tracking, competitor analysis, revenue estimates, and review monitoring for iOS App Store apps. Track your app's performance, discover ranking keywords, monitor competitors, and analyze market trends. - [Search Apps](https://apptail.io) - [Top Charts](https://apptail.io/top-iphone-apps) - [Sign Up for Full Access](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=footer) *Data provided by [AppTail](https://apptail.io) - Mobile App Intelligence Platform*