AstroShader vs On This Day

One-time purchase. No subscription. AstroShader is an astrophotography app for capturing, stacking and editing. All you need is a stand, tripod, telescope or rock (to lean your phone on). AstroShader lets you align and stack live during the image capture process. You can also align and stack images from you Photos library. No need to transfer images to a computer to align and stack them separately (but there is a built in intervalometer if you need it). To take an image follow these steps: • Use a stand, tripod, telescope mount (or lean your iPhone on a rock). • Zoom in on stars and set focus manually, or use autofocus. • Set the exposure time, ISO and white balance, or leave to auto-exposure. • Set the number of exposures to be automatically aligned and stacked. • Calibrate your images from the edit tools. • After the capture is complete you can edit and save your image—including as 16bit TIFF. • You can open images directly to use the edit tools in AstroShader - rather following a new image capture. Image capture options include: • Number of exposures to be aligned and stacked • Exposure time • ISO • White balance • Camera type • Countdown timer • Manual focus • Pause the capture to reposition iPhone or telescope Edit options include: • Stretch image • Background extraction • Dynamic background extraction (DBE) • x5 Histogram curves for fine tonal adjustment • x3 sharpen layers each with radius and intensity with layer blending rather than chaining • Brightness (low light enhancement) • Saturation • Black point • Temperature • Tint • Save format options; HEIF, PNG, JPEG, TIFF

On This Day finds photos you took on today's date in earlier years. It selects the best one and puts it in a widget on your Home Screen. One photo a day is free. A single purchase unlocks a gallery showing the five best photos of the day. PHOTO SELECTION On This Day looks through your library for today's date in earlier years. It scores what it finds using Apple's Vision framework, entirely on your device. Your Favourites come first, and screenshots are excluded. You see the highest-scoring photo. WIDGET SIZES Small and large Home Screen widgets, plus a Lock Screen widget. THEMES CRT, No Theme, Mixtape and Pocket. Tap any theme to preview it with today's photo before you choose. FREE • One photo from this day in an earlier year • Small and large Home Screen widgets, and a Lock Screen widget • The CRT and No Theme themes • Tap through to see the photo full-screen FULL VERSION — A ONE-TIME PURCHASE • Five photos a day, rotating from midday into the evening • Page through the day's whole set in the app • Pin a photo to hold it on the widget until midnight • The Mixtape and Pocket themes PRIVACY Everything happens on your device. On This Day needs no account and uses no cloud. Your photos never leave your phone. No tracking, analytics or cloud-based algorithms are ever used. If today's date has no photos, the previous set stays on the widget.