Help

Quick start (30 seconds)

1. Tap the mic button.
2. Play or sing.
3. Tap the eye button to hide pitch while practicing.
4. Tap the eye-off button to show pitch and review your accuracy.

Main practice screen: start mic, perform, then review.

What does the upper chart show?

The upper chart summarizes how in-tune you were for each note. The box shows where the middle half of your attempts landed -- this is called the interquartile range (IQR). A shorter box means you were more consistent; a taller box means your pitch varied more.

The line inside the box is your typical result (the median). If it sits above 0 cents you tended to be a bit sharp; below 0 cents means a bit flat.

Use this to spot notes that drift and whether you are generally sharp or flat on each one.

Can I rotate the upper chart to a tonic?

Yes. Click any note name in the upper chart header row to set it as the tonic. The columns rotate so each row begins at that tonic; your data and transposition remain unchanged.

Tap any note name in the header to rotate the chart to that tonic.

This sets a global tonic for the chart and helps compare intonation relative to a key center.

Settings glossary

Transposition: shifts displayed note names without changing recorded pitch data. Change this when you want note labels to match your written notation (for example, transposing instruments) or a preferred key view.

Confidence Threshold: filters uncertain pitch detections. Raise it when detections are noisy/jumpy; lower it when soft notes are being dropped.

Hide data for notes with sample size less than: hides note summaries with limited data. Raise it for cleaner, more reliable summaries; lower it for short takes with fewer samples.

Practice tools

Metronome: Use the clock button in the bottom-right controls to open the metronome panel. Start or stop the click, adjust BPM, or tap tempo without leaving the practice screen.

Useful chart controls

View mode: Use the button in the top-right of the lower chart to switch between split and single timeline view.

Timeline scrolling (history): In single timeline view, turn the mic off to scroll horizontally and review earlier pitch data. While the mic is on, the timeline follows live input.

Panel layout: Use the center bar arrows to expand only the upper chart or only the lower chart, then restore split view.

Use view toggle and center arrows to change chart layout.

Android split screen with backing tracks

You can run PitchLog side-by-side with a backing track app (for example, iReal Pro) while recording pitch.

1. Use earphones or headphones so backing-track audio does not bleed into the mic.
2. Open PitchLog and start the mic.
3. Open your backing track app (for example, iReal Pro).
4. Use Android split-screen mode to run both apps together.

Install on phone (Add to Home Screen)

For faster launch and a more app-like experience, add PitchLog to your home screen from your browser menu.

iPhone (Safari): Share button -> Add to Home Screen.

Android (Chrome): Browser menu -> Add to Home screen or Install app.

Troubleshooting

Microphone access denied: allow mic permission in browser settings, then refresh (drag down entire page when "added to home").

No pitch detected: move closer to the mic and reduce background noise.

Feedback while using drones or the metronome: use earphones or a headset.

Privacy and local data

PitchLog stores settings (like transposition and onboarding state) in your browser local storage. It does not upload your microphone audio.