Easy Long Exposure Camera vs AstroFileViewer

This app makes it easy to take long-exposure photos with your iPhone. Capture the passage of time in a single image—from city lights, starry skies, star trails, and fireworks to flowing waterfalls and rivers. Choose from three blending modes to create the look you want. 【Light Trails】 Adds up the light from each frame to draw trails from car headlights and brighten subjects that are too dark to see. Perfect for night scenes and faint auroras that are hard to see with the naked eye. 【Motion Blur】 Averages multiple frames to give waterfalls and rivers a smooth, silky appearance. It can create a slow-shutter effect even in bright conditions and can also make moving people less noticeable. 【Lighten】 Keeps only the brightest parts of each frame, so the background doesn’t wash out even during long exposures. Ideal for fireworks, star trails, and auroras that are clearly visible to the naked eye. 【Create from Video】 Turn videos you’ve already recorded into long-exposure photos. Choose the part of the video to use and blend it with Motion Blur or Lighten. Stabilization is also supported. Key Features ・Exposure times from 1 to 180 seconds, plus Bulb mode that you can stop whenever you choose ・Live preview of the blended image while shooting ・Image stabilization to reduce camera shake without a tripod (up to 3 seconds in the free version) ・Post-capture brightness adjustment from −2.0 to +2.0 EV, with the option to save multiple versions ・Auto and manual focus, plus pinch-to-zoom ・Switch between lenses and front/rear cameras ・3-second and 10-second self-timers ・Grid and level tools for composing your shot ・Shoot using the iPhone volume buttons or a compatible Bluetooth remote shutter ・Selectable image quality and JPG saving ・EXIF metadata including exposure time and ISO Great For ・Cityscapes and illuminated night scenes ・Starry skies and star trails ・Fireworks ・Auroras ・Car and train light trails ・Motion blur in waterfalls, streams, oceans, and clouds ・Making moving people less noticeable in busy locations The free version includes all the essential features you need to enjoy long-exposure photography. The Pro version is available as a one-time purchase and adds manual ISO control, ad removal, noise reduction, unlimited stabilization duration with Bulb mode support, full-resolution saving for photos created from videos (the free version reduces the long side to 2048 px), high-bit-depth 16-bit PNG saving, direct saving without the preview screen, and more. Tips for Better Results For standard long-exposure photography, mount your iPhone on a tripod or place it on a stable surface for sharper results. Image stabilization helps reduce camera shake when shooting without a tripod, but the edges of the resulting photo will be cropped slightly. Results and available lenses may vary depending on your iPhone model and shooting conditions.

AstroFileViewer lets you open and view astronomical image files (FITS and XISF) directly on your iPhone or iPad. Whether you receive a sub-exposure via AirDrop, download one from Safari, or browse your imaging files in the Files app — AstroFileViewer displays them with a proper PixInsight-compatible STF auto-stretch so you can actually see what's in your data. Why stretching, gradient control and denoising on an iPhone? Simple. You get an early impression of how your data could look after post-processing. And it's simply fun too. Features: - Open FITS and XISF files from Files, Safari, AirDrop, email, Google Drive, or any share sheet - PixInsight-compatible Screen Transfer Function (STF) auto-stretch for proper visualization of linear astronomical data - Supports mono and RGB images from all major astro cameras, including OSC debayer (RGGB, GRBG, GBRG, BGGR) - Dark point slider — clip noisy backgrounds, just like AstroBlink on macOS - Contrast slider — S-curve with logarithmic response for fine control - Color saturation slider — boost Ha reds and OIII blues in your OSC data - GPU bilateral denoise — edge-preserving noise reduction, up to 300% strength - Gradient correction — auto-detects and removes linear light pollution gradients - Auto-rotate — landscape images automatically fill your screen in portrait mode - File history with swipe navigation — swipe left/right to flip through recently opened files, even after restarting the app - Recent files on start screen — thumbnail grid of your last 6 images for quick access - Tap-to-fullscreen — single tap hides all UI for distraction-free viewing - Pinch-to-zoom up to 10x with smooth panning - SNR and star count shown in the status bar - FITS/XISF header inspector — view all keywords with important ones highlighted - Save to Photos as a stretched JPEG with all adjustments baked in - Full compression support: LZ4, LZ4HC, zlib, zstd, fpack (Rice, GZIP), ByteShuffle - Persistent settings — all sliders and toggles remembered between sessions - Built-in help section — tap the ? icon anytime - All processing happens on the GPU. All sliders respond in real-time. AstroFileViewer registers as a handler for .xisf, .fits, .fit, and .fts files on your device. No account required. No internet connection needed. Your files stay on your device. Built by an astrophotographer, for astrophotographers.