GPF Easy Diapason vs Pitch Pipe

GPF Easy Diapason is a simple tuning fork app for iPhone. It plays a continuous reference tone to help tune instruments and voices. The interface is clean and minimal, with quick controls for sound setup. Main features: - Tap the 3D tuning fork to start or stop sound - Reference frequency presets: A440, A432, A444, Baroque 415 - Base frequency control from 220 Hz to 880 Hz - Fine tuning in cents (-50 to +50) - Volume control - Waveform selection: Sine, Square, Triangle, Saw - Real time frequency display in Hz - Version and build info in footer Design: - Black and white style - Clear typography - Focused single screen workflow for fast use Technical notes: - Built with SwiftUI - Audio engine based on AVAudioEngine and AVAudioPlayerNode - Automatic build number increment on each build This app is made for musicians, students, choir practice, and anyone who needs a fast and reliable pitch reference on iPhone.

A warm, always-in-tune reference pitch — every note from C to B, held as long as you need. It plays a pure, steady reference tone for any note — tune by ear with confidence. All 12 chromatic notes across multiple octaves. Tap a note and it rings true, warm, and clean. Sustain a tone indefinitely while you match strings, vocals, or wind instruments. No ads, no noise — just a clean reference pitch whenever you reach for it. Perfect for guitar, violin, choir, brass — a chromatic pitch pipe that fits in your pocket. — SUBSCRIPTION — Premium unlocks all features. Payment is charged to your Apple ID at confirmation of purchase. Subscriptions auto-renew unless turned off at least 24 hours before the end of the current period. Manage or cancel anytime in App Store settings. Terms of Use (EULA): https://web-levi.web.app/terms Privacy Policy: https://web-levi.web.app/privacy-policy