Melon Pitcher

Stop guessing at the grocery store or the farm stand. Melon Pitcher turns your iPhone into a watermelon ripeness tester: knock on the rind three times, and the app analyzes the pitch of the sound to tell you how ripe the melon is and estimate its sweetness, right on the spot. HOW IT WORKS Melon Pitcher listens through your iPhone's microphone as you knock on a watermelon. Using on-device frequency analysis (FFT-based pitch detection), the app measures the dominant knock frequency in the 200-350 Hz range associated with watermelon ripeness, then converts that into an easy-to-read ripeness level and an estimated Brix sweetness value. FEATURES - Knock-based ripeness detection: three guided knocks, instant result - Four ripeness levels: Unripe, Raw-Ripe, Perfect Ripe, and Overripe - Estimated Brix sweetness value for each detection - Variety selector with frequency calibration for common US watermelon varieties (Crimson Sweet, Sugar Baby, Charleston Gray, Jubilee, Allsweet, Seedless, and General Watermelon) - Waveform chart comparing your knock to a reference perfect ripe waveform - Local detection history so you can track and compare past results - Light and Dark appearance, following your iOS system setting or locked manually - Adjustable detection sensitivity for quiet or noisy environments - Built-in user manual covering technique, troubleshooting, and tips WHO IT'S FOR Anyone who wants a quick, practical second opinion before buying or cutting open a watermelon: shoppers at the grocery store or farmers market, home cooks, and watermelon enthusiasts who are tired of guessing from the field spot and dried tendril alone. PRIVACY BY DESIGN Melon Pitcher works 100% offline for all detection features. There are no user accounts, no logins, and no personal information collected. Audio captured for analysis is processed entirely on your device and automatically deleted within 2 seconds of each detection. Your detection history is stored locally on your device only and is never uploaded anywhere. ONE-TIME PURCHASE Melon Pitcher is a single, one-time purchase with no in-app purchases, subscriptions, or ads. PLEASE NOTE Melon Pitcher provides a helpful estimate based on acoustic analysis of knock sounds. Results are for reference only and are not a guarantee of ripeness, sweetness, or food safety. Always inspect produce yourself before purchase or consumption.