New in 1.7.1: • Clearer readings: every measured number now uses one monospaced typeface. • The face switch has a clearer outline. • Stopping a reference tone is a calm, full-width button. • Your saved tunings stay safe if you ever move between app versions.

New in 1.7.0: • A new look. The note is bigger, and one centre line shows how far off you are. It lights up when you are in tune. • Switch between Chromatic and Guitar with one tap. • In Guitar mode your strings are buttons: tap one to lock onto it. With Complete, hear its reference tone from the bar below. • Clearer recovery if a tuning or a setting cannot be saved.

New in 1.6.1: • Guitar mode now names the note you are actually playing when it is not the string's note, so a C fretted on the A string reads as C instead of a far-flat D.

New in 1.6.0: • Display, Tuning, Target and A4 menus now respond reliably while Centerline is listening. • Under the hood: the screen code was reorganized with no change to tuning.

New in 1.5.3: • Choose whether to share optional usage analytics in About. • Off by default, with a setting you can change at any time. • Audio and pitch data stay on your device. Tuning works offline.

New in 1.5.2: • A steadier Trail view while notes ring. • Clearer explanations of free tuning and optional Complete tools. • More reliable purchase restoration and recovery. • The About screen shows the installed version.

New in 1.5.0: • Free Chromatic mode follows the nearest note from 62 to 800 Hz. • Trail view shows six seconds of pitch history, vertically or horizontally. • Simple remains the starting view, with display preferences saved for each mode. • Refreshed tuning controls and clearer pitch feedback. • Centerline Complete adds custom six-string tunings and capo settings.