# Janus Calculator vs Molarity Calcs

The clearest difference is rating: Molarity Calcs at 5.0 against Janus Calculator's 2.0. Molarity Calcs also leads on update cadence (every 4 days vs every 45 months) and review sentiment (100% vs 83%). On price, ratings volume, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Molarity Calcs holds the better App Store score, 5.0 against 2.0. Both are backed by a comparable volume of ratings — 1 and 1 respectively. Written reviews point the same way: 83% of Janus Calculator's written reviews are positive against 100% of Molarity Calcs's.

Janus Calculator ships an update every 45 months, Molarity Calcs every 4 days. The most recent releases landed on October 21, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Janus Calculator | Molarity Calcs |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.0 (1 ratings)](https://appshunter.io/ios/app/janus-calculator/id373378721/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/molarity-calcs/id1640884409/reviews)** |
| Number of ratings | 1 | 1 |
| Positive reviews | 83.3% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 45 months | **Every 4 days** |
| Monetization | Free | Free |
| Size | 1 MB | 4 MB |
| Requires iOS | 26.2 | **15.5** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Geoffrey Domm](https://appshunter.io/developer/373378724) | [Jeff Schoellerman](https://appshunter.io/developer/1640884411) |

## What reviewers say

### Janus Calculator

[App page](https://appshunter.io/ios/app/janus-calculator/id373378721)

This app offers a unique dual-calculator interface, supporting both standard and Reverse Polish Notation. It features programmable functions, extensive scientific and financial tools, and includes physical constants and an advanced option calculator.

**Highlights:** Dual calculator interface (Standard and RPN), Programmable functions, Finance and scientific functions, Physical constants, Black-Scholes option calculator, Implied value calculation

**Features:** macOS Compatibility

**In-app purchases:** none


### Molarity Calcs

[App page](https://appshunter.io/ios/app/molarity-calcs/id1640884409)

This app helps users quickly calculate molarity for various chemistry needs. It supports calculations for mass to volume, volume to mass, and dilutions, making it a handy tool for students and professionals.

**Highlights:** Mass to volume calculations, Volume to mass calculations, Dilution calculations, Fast and efficient, User-friendly interface

**In-app purchases:** none


## Frequently asked questions

### Is Janus Calculator free?

Janus Calculator is free to download, with no in-app purchases.

### Is Molarity Calcs free?

Molarity Calcs is free to download, with no in-app purchases.

### Which has better reviews, Janus Calculator or Molarity Calcs?

Molarity Calcs is rated higher. Janus Calculator averages 2.0 out of 5 from 1 ratings, while Molarity Calcs averages 5.0 from 1 ratings.

### Do Janus Calculator or Molarity Calcs have ads?

Neither Janus Calculator nor Molarity Calcs shows ads.

### Which is updated more often, Janus Calculator or Molarity Calcs?

Janus Calculator ships an update every 45 months, and Molarity Calcs every 4 days. Most recently, Janus Calculator was updated on October 21, 2026 and Molarity Calcs on October 24, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*