Attempo

You filmed a take that was almost perfect — except a few notes drifted off the beat. Or the classic: you started calm and steady, then the tempo crept up bar by bar without you noticing. Re-recording costs more time, and the magic of that take might not come back. Attempo fixes the timing instead, and the video follows automatically. Attempo is a rhythm repair tool for performance videos. The audio waveform is your editing surface: set up a beat grid to match the performance, and the notes that are off become visible at a glance. Snap pulls them toward the grid — reading the rhythm's shape so corrections sound played, not mechanized — or nudge any note by hand. Every fix plays back instantly, picture and sound in perfect sync. HOW IT WORKS • Set up the grid: tap the tempo along with the music, anchor a beat line, stretch to fit. The grid is yours — editing can never disturb it. • Snap: one tap corrects every visible note toward its tick, most of the way — fixed, not quantized to death. What you see is what gets snapped. • Fix by hand: drop a marker, drag it. Neighboring markers protect what's already right. Segments shift, stretch, tighten, or delete. • Compare: one button switches between your edit and the untouched original. • Lock finished sections — they defend themselves against later edits, and a progress line tracks how much of the take is done. • Retime the whole performance instantly if you want a different tempo. • Export: the picture is kept untouched from your original recording; only the timing changes. Exports take seconds. MADE FOR Musicians who record themselves: practice clips, lesson demonstrations, recital recordings, covers for social media. Piano, guitar, drums, voice — anything with a beat. PRIVATE BY DESIGN Everything happens on your phone. Your video never leaves the device, no account, no tracking, no data collected. Ever. Attempo: attempt + a tempo — the score marking for "return to time."