---
title: "CosmoCalc - Reviews, Revenue and Downloads in United States | Apple App Store"
description: "CosmoCalc is a simple cosmological distance calculator.  With a simple and intuitive interface you can quickly set a reference cosmology and redshift, and CosmoCalc will calculate a full suite of astr"
---

# CosmoCalc — United States

![CosmoCalc App Icon](https://is1-ssl.mzstatic.com/image/thumb/Purple111/v4/73/06/4d/73064d8f-702d-da9d-49bc-b417443bb4c3/mzl.vtvknunr.png/434x0w.png)

**Developer:** [Eli Rykoff](https://apptail.io/developer/eli-rykoff-zYvb)
**Category:** Education
**Rating:** 5.0/5 (4 ratings)
**Price:** Free
**Bundle ID:** cosmocalc
**Store:** Apple App Store
**Country:** United States
**Version:** 3.1.1 (released 2017-01-02)
**Original Release:** 2010-02-18
**Languages:** English

**App Store Link:** [Download on Apple App Store](https://apps.apple.com/us/app/app/id334569654)
**AppTail Page:** [https://apptail.io/app/cosmocalc-OXOe/united-states](https://apptail.io/app/cosmocalc-OXOe/united-states)

## CosmoCalc Description
CosmoCalc is a simple cosmological distance calculator.  With a simple and intuitive interface you can quickly set a reference cosmology and redshift, and CosmoCalc will calculate a full suite of astronomical distances and scales.

CosmoCalc is a useful and educational reference tool for astronomers, astronomy students, and anybody interested in calculating the distance to astronomical sources.

CosmoCalc allows you to:
* Select cosmological parameters H_0, Ω_m, and Ω_Λ with simple touch-screen controls
* Easily choose from common reference cosmologies, including Planck 2013, WMAP9, Concordance, and Einstein-deSitter
* Quickly determine the luminosity distance, angular diameter distance, lookback time, age of the Universe, comoving volume, and critical density
* Easily switch between flat and non-flat cosmologies by clicking on the chain

## CosmoCalc Screenshots
- [Screenshot 1](https://is1-ssl.mzstatic.com/image/thumb/Purple111/v4/55/4b/72/554b7230-67d2-5e0a-a65c-ad99645d7a69/pr_source.png/640x960.png)
- [Screenshot 2](https://is1-ssl.mzstatic.com/image/thumb/Purple122/v4/3e/68/25/3e68254d-35be-3a79-e20c-bc9170f91ca1/pr_source.png/640x960.png)
- [Screenshot 3](https://is1-ssl.mzstatic.com/image/thumb/Purple122/v4/b5/ba/ea/b5baea1f-bcbb-d7e9-a005-8dcd43c561ad/pr_source.png/640x960.png)

## CosmoCalc Rating Breakdown in United States
- 5 stars: 4 (100%)
- 4 stars: 0 (0%)
- 3 stars: 0 (0%)
- 2 stars: 0 (0%)
- 1 stars: 0 (0%)

## CosmoCalc Reviews in United States

### ***** "Great Tool!"
Never will I need to open a Jupyter notebook everytime I want to calculate some simple cosmology things!
-- Zchusre, 2023-07-31

### ***** "Useful and handy tool"
A very handy and useful tool for cosmological calculations. 

It would be more interesting if we can add nonzero curvature and radiation terms. Also the (as of now) hypothetical term with w=-2/3 should be added for fun.
-- NimrodelofLothlorien, 2014-04-20

### ****- "great tool for being at a seminar"
Great tool, I loved it immediately. One important lacking feature is that it doesn't output E(z).
-- Alexey Vikhlinin, 2011-02-14

[View all CosmoCalc reviews and detailed analytics on AppTail](https://app.apptail.io/signup?utm_campaign=ai-crawl&utm_content=reviews)




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## CosmoCalc Available In
- [United States](https://apptail.io/app/cosmocalc-OXOe/united-states)
- [Canada](https://apptail.io/app/cosmocalc-OXOe/canada)
- [United Kingdom](https://apptail.io/app/cosmocalc-OXOe/united-kingdom)
- [Hong Kong SAR China](https://apptail.io/app/cosmocalc-OXOe/hong-kong)
- [Switzerland](https://apptail.io/app/cosmocalc-OXOe/switzerland)
- [Belarus](https://apptail.io/app/cosmocalc-OXOe/belarus)
- [Chile](https://apptail.io/app/cosmocalc-OXOe/chile)
- [Colombia](https://apptail.io/app/cosmocalc-OXOe/colombia)
- [Dominican Republic](https://apptail.io/app/cosmocalc-OXOe/dominican-republic)
- [Algeria](https://apptail.io/app/cosmocalc-OXOe/algeria)
- [Ecuador](https://apptail.io/app/cosmocalc-OXOe/ecuador)
- [Egypt](https://apptail.io/app/cosmocalc-OXOe/egypt)
- [Indonesia](https://apptail.io/app/cosmocalc-OXOe/indonesia)
- [Israel](https://apptail.io/app/cosmocalc-OXOe/israel)
- [India](https://apptail.io/app/cosmocalc-OXOe/india)
- [Jordan](https://apptail.io/app/cosmocalc-OXOe/jordan)
- [Japan](https://apptail.io/app/cosmocalc-OXOe/japan)
- [South Korea](https://apptail.io/app/cosmocalc-OXOe/south-korea)
- [Kuwait](https://apptail.io/app/cosmocalc-OXOe/kuwait)
- [Kazakhstan](https://apptail.io/app/cosmocalc-OXOe/kazakhstan)
- [Lebanon](https://apptail.io/app/cosmocalc-OXOe/lebanon)
- [Sri Lanka](https://apptail.io/app/cosmocalc-OXOe/sri-lanka)
- [Malaysia](https://apptail.io/app/cosmocalc-OXOe/malaysia)
- [Norway](https://apptail.io/app/cosmocalc-OXOe/norway)
- [New Zealand](https://apptail.io/app/cosmocalc-OXOe/new-zealand)
- [Peru](https://apptail.io/app/cosmocalc-OXOe/peru)
- [Philippines](https://apptail.io/app/cosmocalc-OXOe/philippines)
- [Pakistan](https://apptail.io/app/cosmocalc-OXOe/pakistan)
- [Russia](https://apptail.io/app/cosmocalc-OXOe/russia)
- [Saudi Arabia](https://apptail.io/app/cosmocalc-OXOe/saudi-arabia)
- [Singapore](https://apptail.io/app/cosmocalc-OXOe/singapore)
- [Thailand](https://apptail.io/app/cosmocalc-OXOe/thailand)
- [Türkiye](https://apptail.io/app/cosmocalc-OXOe/turkey)
- [Taiwan](https://apptail.io/app/cosmocalc-OXOe/taiwan)
- [Ukraine](https://apptail.io/app/cosmocalc-OXOe/ukraine)
- [Uzbekistan](https://apptail.io/app/cosmocalc-OXOe/uzbekistan)
- [Vietnam](https://apptail.io/app/cosmocalc-OXOe/vietnam)
- [United Arab Emirates](https://apptail.io/app/cosmocalc-OXOe/united-arab-emirates)
- [South Africa](https://apptail.io/app/cosmocalc-OXOe/south-africa)
- [Argentina](https://apptail.io/app/cosmocalc-OXOe/argentina)
- [Australia](https://apptail.io/app/cosmocalc-OXOe/australia)
- [Azerbaijan](https://apptail.io/app/cosmocalc-OXOe/azerbaijan)
- [Brunei](https://apptail.io/app/cosmocalc-OXOe/brunei)

---

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