TrailStack vs SnaPPurin

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.

Turn every moment of motion into a creation you can see at a glance. SnaPPurin transforms videos and Live Photos into photo sequences, action collages, and motion trails. It automatically selects moments with movement, then lets you fine-tune and export the result—all on your iPhone. SIX CREATIVE STYLES • Horizontal Frame Strip • Vertical Frame Strip • Grid • Sequential Panels • Action Sequence • Motion Trail KEY FEATURES • Record video directly in the app • Import videos and Live Photos from your photo library • Import video files from the Files app • Automatically select moments with movement • Adjust the number and direction of frames • Choose from four color styles • Adjust brightness, saturation, and motion-trail opacity • Customize backgrounds and layouts • Preview the finished result before saving EXPORT OPTIONS • Single combined JPEG • Individual frame JPEGs • Looping GIF • MP4 video without audio PRIVACY BY DESIGN Photo and video analysis and editing take place on your device. Your photos and videos are not uploaded to an external server. No account is required, and the app contains no advertising or user tracking. FREE VERSION AND IN-APP PURCHASE The free version lets you save creations from up to three different video projects. Combined images, individual frame JPEGs, GIFs, and MP4 videos saved within the free allowance do not include a watermark. Re-exporting the same project in any format does not count as another project. A one-time Unlimited Export in-app purchase removes the watermark from the preview and unlocks unlimited new video projects and exports. This is not a subscription. Bring sports, dance, family moments, pets, trips, and everyday movement to life in a new way.