# CMM | Molar Mass Calculator vs Elementium

The clearest difference is update cadence: Elementium at every 3 weeks against CMM | Molar Mass Calculator's every 5 months. CMM | Molar Mass Calculator's advantage is review sentiment (84% vs 75%) and iOS requirement (9.3 vs 16.1). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. CMM | Molar Mass Calculator sells 5 one-off in-app purchases and Elementium sells 9 in-app purchases, starting at $1.99 per month. Whichever you choose, the download price is not the number that matters.

CMM | Molar Mass Calculator holds the better App Store score, 4.8 against 4.6. Both are backed by a comparable volume of ratings — 207 and 603 respectively. Written reviews point the same way: 84% of CMM | Molar Mass Calculator's written reviews are positive against 75% of Elementium's.

CMM | Molar Mass Calculator ships an update every 5 months, Elementium every 3 weeks. The most recent releases landed on November 1, 2026 and November 6, 2026 respectively.

## The numbers

| Metric | CMM | Molar Mass Calculator | Elementium |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (207 ratings)](https://appshunter.io/ios/app/cmm-molar-mass-calculator/id401529325/reviews)** | [4.6 (603 ratings)](https://appshunter.io/ios/app/elementium/id892123825/reviews) |
| Number of ratings | 207 | **603** |
| Positive reviews | **84.3% of reviews** | 75.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | Free with in-app purchases | Freemium |
| Size | 14 MB | 752 MB |
| Requires iOS | **9.3** | 16.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, Apple TV |
| Age rating | 4+ | 4+ |
| Developer | [Alexandre Perez](https://appshunter.io/developer/397221706) | [Samuel Spencer](https://appshunter.io/developer/1128165856) |

## What reviewers say

### CMM | Molar Mass Calculator

[App page](https://appshunter.io/ios/app/cmm-molar-mass-calculator/id401529325)

Calculate the molar mass of chemical compounds with ease. This tool is essential for chemistry students and professionals, offering a periodic table keyboard for quick formula entry and the ability to save frequently used formulas.

**Highlights:** Molar mass calculation, Periodic table keyboard, Save recurring formulas, Formula entry, Chemistry education tool

**Features:** macOS Compatibility

**In-app purchases (5)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Donation | $0.99 | one-time |
| Donation | $2.99 | one-time |
| Donation | $4.99 | one-time |
| Donation | $9.99 | one-time |
| Donation | $19.99 | one-time |

**What reviewers like**

- 🚀 Saves a lot of time
- 👍 Easy to use
- ✅ Accurate calculations
- 💡 Great for chemistry students
- 💯 Versatile for various calculations

**What reviewers complain about**

- 🐛 Does not recognize lowercase elements
- 🐛 Requires constant capitalization
- 🐛 Keyboard covers input on older phones
- 🐛 Number 7 registers double press
- 🐛 Missing mono isotopic mass calculation

**Reported bugs**

- Does not recognize Florine
- Number 7 registers a double press (77)
- Keyboard covers up mass on iPhone 4s
- Element masses for key elements are incorrect
- App is not up to date

**Requested features**

- Ability to name elements
- Type in chemical names (e.g., 'oxalate') to get percentages
- Molarity calculator inclusion
- Actual periodic table to tap
- Recognition system for stoichiometrically correct molecules


### Elementium

[App page](https://appshunter.io/ios/app/elementium/id892123825)

Access comprehensive information on every element of the periodic table. Explore detailed data, visualize trends, and utilize a built-in solubility calculator. Perfect for students and professionals needing quick, accurate chemical data.

**Highlights:** Detailed element information, Interactive periodic table, Dynamic filtering and trend visualization, Solubility calculator, Element image library, Bohr model visualizations, Home screen widgets

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ION, 1 month | $1.99 | per month |
| ION, 3 Months | $3.99 | per 3 months |
| ION, 6 months | $5.99 | per 6 months |
| ION, 1 year | $9.99 | per year |
| Export Data | $0.99 | one-time |
| Bohr Models | $1.99 | one-time |
| Advanced Sorting | $2.99 | one-time |
| Visual Elements | $3.99 | one-time |
| Advanced Tools | $4.99 | one-time |

**What reviewers like**

- 👍 User-friendly and intuitive interface
- 📚 Comprehensive element information and data
- 🎨 Beautiful, clean, and visually appealing design
- 🔗 Helpful Wikipedia and external resource links
- 📖 Excellent for educational purposes and studying

**What reviewers complain about**

- 💰 Expensive subscription model for premium features
- 🔐 Paywall blocking key features and element images
- 📺 Intrusive ads and purchase prompts on startup
- 🎨 Poor color contrast on metalloid background text
- 📱 Crashes on older devices (iPhone 6G iPod Touch, iPhone XS Max)

**Reported bugs**

- App crashes on startup and when tapping elements
- Crashes on older iOS devices and iPod Touch
- Molar mass not visible in iPhone landscape orientation
- Intrusive purchase prompt that's difficult to dismiss
- Rating request spam appearing too early in user experience

**Requested features**

- Element images and visual representations
- One-time purchase option instead of subscription
- Zoom out to view entire periodic table at once
- Better display of molar mass on iPhone in landscape mode
- More detailed information and content


## Frequently asked questions

### Is CMM | Molar Mass Calculator free?

CMM | Molar Mass Calculator is free to download, with in-app purchases available.

### Is Elementium free?

Elementium is free to download, with in-app purchases available.

### Which has better reviews, CMM | Molar Mass Calculator or Elementium?

CMM | Molar Mass Calculator is rated higher. CMM | Molar Mass Calculator averages 4.8 out of 5 from 207 ratings, while Elementium averages 4.6 from 603 ratings.

### Do CMM | Molar Mass Calculator or Elementium have ads?

Neither CMM | Molar Mass Calculator nor Elementium shows ads.

### Which is updated more often, CMM | Molar Mass Calculator or Elementium?

CMM | Molar Mass Calculator ships an update every 5 months, and Elementium every 3 weeks. Most recently, CMM | Molar Mass Calculator was updated on November 1, 2026 and Elementium on November 6, 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.*