APM Sweep vs Plectro

APM Sweep is the successor of the well known APM Tool: it let you quickly measure the acoustical performance of a room (reverberation time, clarity, etc. in octave and third octave bands), check if that room is well suited for its purpose and, if not, choose which materials can improve the acoustical quality. Everything still there but with an exciting improvement: now you can use all the power of the Exponential Sine Sweep technique for the measurement process, so your results can be extremely precise and accurate. You can also, save, load and export results in common spreadsheet format. The app can also generate pdf reports with photos. A tutorial slideshow explains the app use. Required at least iOS 11.0

Make every guitar practice session count. Plectro listens while you play and turns your practice into useful feedback. See notes and chords in real time, tune with clear guidance, check the cleanliness of single notes, and build a lasting practice habit with session history, streaks, and weekly stats. PLAY WITH LIVE FEEDBACK - Identify notes and chords as you play - See whether a note is in tune, sharp, or flat - View exact cent deviation at supported skill levels - Get a live 0-100 tone score for single-note playing - Follow your elapsed practice time without leaving the session TRACK YOUR PRACTICE - Save completed practice sessions automatically after you end them - Review session duration, detected notes, and average tone score - Follow your current practice streak - See total practice time, weekly minutes, and session count - Visualize your last seven days of practice MADE FOR YOUR LEVEL Choose Beginner, Intermediate, or Advanced. Plectro adjusts the amount of detail shown and the chord vocabulary it recognizes, keeping the experience focused instead of overwhelming. PRIVATE BY DESIGN Audio analysis happens entirely on your iPhone. Your audio is never recorded, stored, or uploaded. Practice metrics stay locally on your device, and no account is required. Plectro is built for guitarists who already know what they want to practice and want a clearer view of their consistency, tuning, and tone. Tap Practice, start playing, and make your progress visible.