TrailStack vs Strobe

Turn any video into a stunning strobe photo — right on your iPhone device. TrailStack stacks multiple frames from your video into one composite image, creating the classic strobe effect used by sports photographers, coaches, and creative artists. No cloud upload. No subscription. No Photoshop skills required. HOW IT WORKS 1. Pick any video from your camera roll 2. Adjust Trim, Interval, Sensitivity, Fade, and Cleanup sliders 3. See results instantly in the real-time preview 4. Export a crisp PNG at your video's original resolution to your Photos KEY FEATURES • Import any existing video — no in-app recording required • Real-time preview as you adjust every parameter • 4 built-in presets: Default, Sport, Art, Sharp • Supports slow-motion video for ultra-detailed motion analysis • Export at original video resolution PNG (up to 1920px on the longest side) • 100% on-device processing — your videos never leave your phone • Free to use, with an optional ad to remove the watermark from exports PERFECT FOR • Athletes & coaches — analyze a golf swing, tennis serve, or gymnastics routine • Skateboarders & BMX riders — capture trick sequences in one frame • Dancers & performers — visualize choreography and movement flow • Physics & science teachers — demonstrate motion and velocity visually • Social media creators — create eye-catching composite sports photos WHY TRAILSTACK? Other strobe photo apps require you to record video inside the app — TrailStack works with footage you already have. Sony MotionShot was discontinued in 2021. Clipstro is iOS-only and cannot import existing videos. Photoshop can achieve similar results, but takes 30–60 minutes of manual work per photo. TrailStack does it in seconds. PRIVACY FIRST All processing happens entirely on your device. We never upload, store, or transmit your photos or videos to any server. What's on your phone stays on your phone. FREE & FAIR TrailStack is free to download and use. Exports include a small watermark. Watch a short optional ad to save a watermark-free version at any time — no subscription, no hidden fees. Download TrailStack and see your movement in a whole new way.

Strobe turns your videos into action sequence photos — automatically. Pick a video. Strobe extracts key frames, isolates the subject, and composites them into a single image. What used to take 30 minutes in Photoshop now takes one tap. ◆ OVERLAY MODE Moving actions (skateboarding, running, cycling) — multiple poses on one background. ◆ SEQUENCE MODE Stationary actions (golf swing, dance, batting) — side-by-side frame grid. ◆ SMART FRAME SELECTION AI-powered pose detection picks the most dynamic moments automatically. ◆ MANUAL CONTROL Timeline scrubber + frame gallery for precise selection. ◆ CLEAN RESULTS Edge feathering, overlap removal, and opacity gradients for professional output. — FREE — • Overlay & Sequence modes • Uniform & Smart frame selection • Up to 4 frames • Save with Strobe watermark — STROBE PRO ($3.99, one-time) — • Up to 12 frames • Manual frame selection • Crop • Subject position & size editing • No watermark Perfect for: • Skateboarders, surfers, BMX riders, parkour athletes • Golf coaches analyzing swing form • Sports coaches comparing athlete technique • Content creators & photographers • Anyone who loves motion photography