Hertzly

Hertzly is a tone generator for checking speakers, headphones, and audio output. INCLUDED FOR FREE • Sine wave • Frequency and volume controls • Play and Stop • Frequency sweep • Speaker Test • Built-in test presets (A4 440 Hz, 1 kHz, bass, high, sweep, and more) • Favorites • Recent playback history (limited) Hertzly PRO — IN-APP PURCHASE (OPTIONAL SUBSCRIPTION) Hertzly Pro is not included with the free download. It requires a separate auto-renewable Weekly or Yearly In-App Purchase. Pro unlocks: • Square, triangle, and sawtooth waves • White noise, pink noise, and full-range burst • Left/right output • Auto-stop timer • Unlimited custom presets • Full playback history • Background sound SUBSCRIPTIONS Hertzly Pro is available as an auto-renewable subscription: • Weekly • Yearly Payment is charged to your Apple ID at confirmation of purchase. The subscription renews automatically unless you cancel at least 24 hours before the current period ends. Your account is charged for renewal within 24 hours before the period ends. Manage or cancel in iPhone Settings → Apple ID → Subscriptions. Any unused portion of a free trial, if offered, is forfeited when you buy a subscription. Privacy Policy: https://docs.google.com/document/d/1oPuHmV9-btUV5BU1F0oo4taAOJXrmmTN6gZElZMhaQw/view Terms of Use: https://docs.google.com/document/d/1S3m8jhoJgjlPIN1gfuWs2bpO6XHN_mdIjUAWRFMCrrI/view