Dualscope

Dualscope keeps two video clips locked in perfect sync so you can compare takes, versions, or edits without switching apps or eyeballing timestamps. Built for editors checking client revisions, QA teams comparing before-and-after footage, and creators reviewing multiple takes of the same shot. Drop in two clips and Dualscope plays, scrubs, and steps them frame by frame together — one set of controls moves both. A shared waveform timeline shows exactly where the audio is, and a sync offset control lets you nudge one clip to line up two takes that don't start on the same frame. Capture any moment as a side-by-side, stacked, or wipe comparison still and save it to Photos or share it instantly. Every comparison you save stays in your library so you can reopen it later — no re-picking files, no re-aligning offsets. Everything runs on-device. Videos you pick from Photos or Files are copied into Dualscope's own storage and never leave your phone — no accounts, no uploads, no tracking. FEATURES • Frame-accurate synchronized playback of two clips, side by side, stacked, or wipe • Shared audio waveform timeline with drag-to-scrub • Frame-by-frame stepping and a fine sync offset to align mismatched takes • One-tap capture to Photos or Share, in whatever layout is on screen • A saved comparison library so you can reopen past reviews instantly