The app generates periodic signals with adjustable frequency and amplitude for testing electronic circuits. It also includes a tuner for instruments and a metronome for practice.
by michael heinz★ 4.0153 ratingsUtilitiesFreeData updated 2026-09-22
Generate tones for phone numbers, special characters, and pauses. Tap or hold keys to produce accurate tones. Watch digits highlight during playback for precise control. Manage tone sequences and control calls externally.
Check speaker and monitor quality with real-time noise measurement and frequency analysis. Generate custom frequencies for testing. Adjust audio settings to enhance clarity. Access soothing sounds for relaxation.
Customize sound therapy to mask with adjustable noise levels and preloaded soundscapes. Set sleep timers and track usage. Access guided relaxation exercises and progress reports. Share feedback to refine treatment settings.
Transforms iPhone into a chromatic and . Detects pitch and displays frequency. Adjusts tempo and beats per minute. Customizable settings for tuning and rhythm. Syncs with audio input for real-time feedback.
Allows users to adjust and calibrate instrument pitches. Select frequency and tuning settings. Display pitch for each string indicating signal high or low. Calibrate piano sound using an open string. Adjust A4 frequency between 428 and 452.
Remove water from device speakers using adjustable ejection speeds: slow, medium, or fast. nd customize tones for audio testing or relaxation. Control sound output and adjust frequency settings.
Learn and practice Morse Code by touching the screen to generate tones. Adjust tone frequency from 300 Hz to 1200 Hz and control volume. Send dots with short touches and dashes with longer holds.
A tuning for string instruments. Adjust string pitch by comparing with piano sound. Select frequency and tuning settings. Display pitch indication for each string. Calibrate using open strings.
Check singing pitch and tune instruments with real-time feedback. Practice scales including major, minor, pentatonic, and harmonic minor. Record audio sessions and adjust pitch. Customize keyboard labels and color themes. Use a metronome for timing.
Play sound effects with a single tap. Choose from 45 for calls, messages, or alerts. Save preferred sounds as custom . Share or set as default notification tones.