Calculate specs offline
Calculate magnification, exit pupil, true field of view, and f-ratio based on aperture, focal length, and type. Color badges indicate optimal viewing conditions. Results update in real time as inputs change.
Showing 1–20 of 1,000 ranked alternatives.
Greg Paskal
Calculate magnification and apply Barlow lens adjustments
Calculate magnification using telescope and eyepiece focal lengths. Input values in millimeters. Include 2x to 5x Barlow lens options. Perform calculations for amateur and professional astronomers. Display results directly.
NASA
Stream videos, view images, and explore space
Access + videos without a subscription. View over 21,000 latest images. Explore mission details and news. Listen to podcasts. Use augmented reality to interact with space content. Track live coverage and on-demand series.
Edward Sanville
Explore celestial objects with 3D views
Use device sensors to locate planets, constellations, and satellites. View high-definition graphics with Retina display. Adjust settings based on location and time. Access detailed information about celestial objects.
Yodel Code LLC
Magnify text and objects easily.
The app provides a digital magnifier with a flashlight for viewing small text and objects. It offers up to 12x magnification and can also function as a cosmetic mirror using the front-facing camera.
Simulation Curriculum Corp.
Explore celestial objects and track the night
Access celestial objects with a comprehensive database of comets, asteroids, and solar system bodies. Plan and log observations, control telescopes, and track accurate positions. View detailed sky maps and receive real-time updates.
建菲 黎
Zoom text for clear reading
Magnify text and images up to 16x for clear viewing. Zoom in and out by sliding or pinching. Move the function bar to adjust position. Read documents, menus, and printed materials easily.
Jeff Hanel
Zoom in and touch to magnify
Allows users to zoom in on text or objects using the camera. Adjust magnification with a plus button. Reset zoom with an instant button. Take photos of the magnified view.
Martin Dodd
Track skies and find clear
Track celestial events and locate optimal stargazing conditions. Find clear, dark skies with forecasts for light pollution and cloud cover. Set alerts for ideal viewing times. Share locations and compare sky clarity across regions.
妮琳 张
Start animation automatically
A animation automatically starts when a device is connected to a data line or wireless panel and displays a animation. It stops when the connection is removed. The calibrates percentage data for accurate display.
Spotlight Six Software LLC
Set times, tap start, hear the
Rings a Tibetan Singing Bowl at set or random intervals. Schedule sessions and start playback. Exit and bells continue. Includes a meditation timer for guided practice.
Celestron, LLC.
Explore the night sky with your phone
Identify constellations and celestial objects in real time. Locate planets and stars with precise guidance. Syncs with telescope for automatic alignment and tracking. Provides detailed information on astronomical events and objects.
ChengDu PinGuo Technology Co., Ltd.
Capture portraits with front and rear camera
Take portrait selfies with front and rear camera switching via tap or shake. Use night mode for low-light shots. Auto mirror and timer functions available. Create grid collages with 1:1 and 4:3 layouts using 1 to 9 grids.
ANNA KOSHEL
Zoom and flash for clear viewing
Zoom in with high magnification for detailed viewing. Use for low-light clarity. Freeze motion to stabilize images. Capture macro photos with high-quality resolution. Adjust magnification ratio and brightness settings.
Mosaic S.r.l.
Note, sketch, annotate, export, organize
Take notes, draw, and sketch using Apple Pencil. Annotate PDFs, Excel, Keynote, and Numbers files. Create lists, memos, and organize notes. Export notes in multiple formats.
Changsha Shenguangyuan Technology Co., Ltd.
Light, magnify, and flash on demand
Flashlight provides one-touch activation for bright illumination. Includes multiple flash modes for different lighting needs. Features a function for close-up viewing. Offers adjustable brightness settings and timer options for extended use.
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