# CosmoCalc — user reviews

> 5 indexed App Store user reviews of CosmoCalc by Eli Rykoff, rated 5.00/5 from 4 ratings.

- Source: https://appshunter.io/ios/app/cosmocalc/id334569654/reviews
- App overview in markdown: https://appshunter.io/ios/app/cosmocalc/id334569654.md
- Rating breakdown: 5★ 4 · 4★ 0 · 3★ 0 · 2★ 0 · 1★ 0

## Most critical reviews (5 lowest-rated)

### 4/5 — great tool for being at a seminar

*2011-02-14*

Great tool, I loved it immediately. One important lacking feature is that it doesn't output E(z).

### 5/5 — Great Tool!

*2023-07-31*

Never will I need to open a Jupyter notebook everytime I want to calculate some simple cosmology things!

### 5/5 — Useful and handy tool

*2014-04-20*

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.

### 5/5 — Cool

*2011-03-23*

Works well

### 5/5 — Very educational

*2010-07-27*

Very esoteric for most, but for the educated layman interested in cosmology, this a a really cool tool.
V2.2 seems to have lost the ability to unchain the total mass/energy sum. Do we have to take as fact that Omega is equal 1?

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-05.*