Version 2.0 is a major update that adds a full suite of music tools, a real-time instrument tuner, audio playback, dark mode, offline caching, and a wide range of stability and performance improvements throughout the app. REAL-TIME CHROMATIC TUNER The biggest new feature in 2.0 is the built-in chromatic tuner. Tap the new Tuner tab and Harmoniqs listens through your microphone in a continuous loop, detecting pitch and displaying results on a live cents meter. You can see the detected note, octave, and frequency in real time, and whether you are flat, sharp, or perfectly in tune. Guitar and bass modes are both supported -- tap any string in the reference grid to lock your target and get instant match feedback. No separate tuner app needed. CIRCLE OF FIFTHS Every analysis now includes an interactive circle of fifths that highlights your detected key on the outer ring and its relative major or minor on the inner ring. A clean visual legend makes it easy to understand the relationship at a glance. DIATONIC CHORD SUGGESTIONS A new Chords panel shows all seven chords that naturally belong to your detected key, labeled with Roman numeral notation and chord quality. Tap any chord card to see its degree and role in the scale. The grid is built to fit any screen size cleanly, from iPhone SE to iPad. CAPO AND TRANSPOSITION TOOL A new Capo panel lets you transpose the detected key up or down by semitone and instantly see guitar-friendly capo positions for the resulting key. Each position shows which open chord shapes you would use, making it easy to adapt a song to your vocal range or preferred fret position. AUDIO PLAYBACK After uploading or recording, you can now play your audio back directly inside the app. A progress bar with tap-to-seek lets you jump to any point in the file without leaving the analysis view. DARK MODE The entire app now supports dark mode. It follows your device setting automatically or can be toggled manually in the Settings tab. Every screen, card, button, and component -- including the tuner, circle of fifths, and chord grid -- adapts fully to your chosen theme. OFFLINE HISTORY CACHE Analysis results are now cached locally on your device. If you lose your connection or open the app offline, your recent results are still available from the History tab. A clear indicator shows when you are viewing cached data versus live server results. HISTORY FOR GUESTS Guest users no longer see an empty History tab. Analyses from Upload and Record are now cached locally and shown immediately in History, with no account required. BUG FIXES AND IMPROVEMENTS -