# Atom Calculator vs Molar Mass Calculator Pro

The clearest difference is update cadence: Molar Mass Calculator Pro at every 17 months against Atom Calculator's every 35 months. Atom Calculator's advantage is iOS requirement (12.0 vs 15.4). On price, ads, in-app purchases and device support there is nothing between them.

Atom Calculator costs $2.99 and Molar Mass Calculator Pro $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Atom Calculator ships an update every 35 months, Molar Mass Calculator Pro every 17 months. The most recent releases landed on October 26, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Atom Calculator | Molar Mass Calculator Pro |
| --- | --- | --- |
| Price | $2.99 | $2.99 |
| Rating | — | **[4.8 (6 ratings)](https://appshunter.io/ios/app/molar-mass-calculator-pro/id1496975776/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 35 months | **Every 17 months** |
| Monetization | — | Free |
| Size | 13 MB | 7 MB |
| Requires iOS | **12.0** | 15.4 |
| Devices | iPhone, iPad, iPod | **iPhone, iPad, iPod, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Gorasiya Vishal Nanjibhai](https://appshunter.io/developer/1287086933) | [Pylyp Chernov](https://appshunter.io/developer/1456652778) |

## What reviewers say

### Atom Calculator

[App page](https://appshunter.io/ios/app/atom-calculator/id1457529377)

**Features:** macOS Compatibility

**In-app purchases:** none


### Molar Mass Calculator Pro

[App page](https://appshunter.io/ios/app/molar-mass-calculator-pro/id1496975776)

Easily calculate the molar mass of chemical compounds by simply entering the formula. This app offers instant, efficient, and intuitive calculations with a beautiful user interface, making it ideal for students.

**Highlights:** Molar mass calculation, Formula input, Instant results, Efficient processing, Simple interface, Beautiful UI

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Atom Calculator free?

Atom Calculator costs $2.99, with no in-app purchases.

### Is Molar Mass Calculator Pro free?

Molar Mass Calculator Pro costs $2.99, with no in-app purchases.

### Do Atom Calculator or Molar Mass Calculator Pro have ads?

Neither Atom Calculator nor Molar Mass Calculator Pro shows ads.

### Which is updated more often, Atom Calculator or Molar Mass Calculator Pro?

Atom Calculator ships an update every 35 months, and Molar Mass Calculator Pro every 17 months. Most recently, Atom Calculator was updated on October 26, 2026 and Molar Mass Calculator Pro on November 5, 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.*