Apps Like CosmoCalc for iPhone and iPad
Calculate cosmic distances and scales
Set cosmological parameters like H_0, Ω_m, and Ω_Λ. Calculate various astronomical distances and scales based on redshift and selected cosmology. Display results in multiple units and export data for further analysis.
CosmoCalc screenshots
Ranked alternatives
Showing 1–20 of 1,000 ranked alternatives.



Deluxe Moon Pro • App & Widget
Sergey Vdovenko
Track phases and lunar events
Track lunar phases, moonrise and moonset times, and eclipse predictions. View detailed maps and surface features. Adjust settings for photography with exposure and focus guides. Access astronomical data and cultural lunar calendars.

iPersia Calendar تقویم ارز
Exeersoft Inc
Track events, set reminders, switch languages
Displays dates in Persian, Islamic, and Gregorian calendars. Users can switch between English and Farsi languages. It shows international holidays and Persian events. Features include daily, monthly, and annual views.

StarMap 3D+ Plus
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.

Sky Tonight - Stargazing Guide
Vito Technology Inc.
Identify celestial objects
Explore the night sky by identifying celestial objects, tracking astronomical events, and locating specific space bodies. Adjust constellation visuals, set reminders for celestial events, and customize the experience.


Spaceflight Simulator
Spaceflight Simulator UK Ltd
Build rockets, explore space, track physics
Build and customize rockets to explore a realistically scaled universe. Navigate using real orbital mechanics and travel to distant planets and objects. Interact with Mercury, Venus, Earth, the Moon, Mars, Phobos, and Deimos.

SkySafari 7 Pro
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.

Star Walk 2 Plus: Sky Live App
Vito Technology Inc.
Explore celestial objects and constellations
View celestial objects like stars, planets, and constellations using device sensors and GPS. Tap to identify objects and learn about their properties. Explore detailed information on celestial events and navigation. Share observations with others.

FieldCalc - GPS Area Measure
Pravin Gondaliya
Land and calculate distances with GPS
Land and distances using GPS by marking points on a map. Calculate field size, plot dimensions, and property boundaries. Save and share measurement data. Sync with other devices for accurate field surveys.

Moon Phases and Lunar Calendar
Business City s.r.o.
Check and track events
Track , age, rise, and set times for your location. View next full dates. Check sun and times for specific dates and locations. Save and share data.

Tape Measure®
AI Photo Editor Lab SRL
Measure objects with AR precision
Measure distances using augmented reality or direct phone contact. Calculate surface areas and angles. Create floor plans and save measurements. Share results via email or messaging.

Planets
Dana Peters
Explore in 3D view
Explore the solar system with 3D views of and the moon. Locate celestial bodies using 2D and 3D sky maps. Check visibility times for . Rotate a 3D globe to view planetary details.


Star Chart
ESCAPE VELOCITY LIMITED
Explore celestial objects with AR
View celestial objects using augmented reality. Point device at sky to identify stars, planets, and constellations. Access detailed information and historical data. Sync with GPS for accurate positioning. Explore 3D models of celestial bodies.

StarMap 3D
Edward Sanville
Explore celestial objects with 3D views
Use compass and gyroscope to locate planets, stars, and constellations. View high-definition Retina graphics with detailed celestial objects. Access 3D views, constellation artwork, and deep sky objects. Sync with iPad for enhanced features.

LunaSolCal
Volker Vocking
Track sunrise, sunset, and twilight times
Calculate sunrise, sunset, moonrise, and moonset times for your location. Track solar noon, day length, and equation of time. View declination, twilight phases, and azimuth angles. Monitor seasonal dates, solstices, and equinoxes.

Sky Live: Heavens Above Viewer
Vito Technology Inc.
Plan and capture star observations
Plan and observe celestial events with real-time data on planets, stars, and constellations. Check weather conditions and visibility scores. Set location for accurate sky tracking. Capture and share starry night photos.

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