Slow Motion & Fast Video Speed

A simple app for changing the playback speed of your videos and saving them directly to your Camera Roll.

Built for anyone who wants slow-motion or speed-up clips without the hassle. Pick a speed, export, done.

【What this app does】 · Export at 0.25x, 0.5x, 0.75x, 1.5x, 2x, 3x, or 4x speed · Pro: change speed section by section within a single video · Pro: fine-tune any speed from 0.2x to 10x · Pro: set your target length and the speed is calculated automatically · Three audio modes: muted, speed-linked, or natural pitch (Pro) · Up to 1 video per day free; Pro (¥300) unlocks unlimited exports · Fully offline — your videos never leave your device · No ads

【Pro plan】 One-time ¥300 unlocks: · Change speed section by section within one video · Voice stays natural, even at high speed · Fine-tune speed from 0.2x to 10x · Set the target length and let the app calculate the speed · Unlimited exports · No subscription, ever

【Privacy】 All processing happens on-device. No network requests. No uploads.