# Molar Mass Calculator Pro vs Contactify

The clearest difference is review sentiment: Molar Mass Calculator Pro at 100% against Contactify's 0%. Molar Mass Calculator Pro also leads on rating (4.8 vs 2.6) and in-app purchases (none vs 2). Contactify's advantage is price (Free vs $2.99). On ratings volume, ads and iOS requirement there is nothing between them.

Contactify is free to download; Molar Mass Calculator Pro costs $2.99 up front. Contactify sells 2 in-app purchases, starting at $1.99 per month. Molar Mass Calculator Pro asks for nothing beyond the download.

Molar Mass Calculator Pro holds the better App Store score, 4.8 against 2.6. Both are backed by a comparable volume of ratings — 6 and 5 respectively. Written reviews point the same way: 100% of Molar Mass Calculator Pro's written reviews are positive against 0% of Contactify's.

## The numbers

| Metric | Molar Mass Calculator Pro | Contactify |
| --- | --- | --- |
| Price | $2.99 | **Free** |
| Rating | **[4.8 (6 ratings)](https://appshunter.io/ios/app/molar-mass-calculator-pro/id1496975776/reviews)** | [2.6 (5 ratings)](https://appshunter.io/ios/app/contactify-lock-screen-widget/id1640305545/reviews) |
| Number of ratings | **6** | 5 |
| Positive reviews | **100.0% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 17 months | — |
| Monetization | **Free** | Free with in-app purchases |
| Size | 7 MB | 2 MB |
| Requires iOS | **15.4** | 16.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Pylyp Chernov](https://appshunter.io/developer/1456652778) | [Niels van Straaten](https://appshunter.io/developer/1592659282) |

## What reviewers say

### 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


### Contactify

[App page](https://appshunter.io/ios/app/contactify-lock-screen-widget/id1640305545)

Personalize your lock screen with quick access to your contacts. Tap to call, send SMS, or initiate FaceTime Audio/Video directly from your lock screen. Customize contact images for a unique experience.

**Highlights:** Add contacts to lock screen, Quick call, SMS, FaceTime, Customizable contact images, Edit contact pictures from Camera Roll, Personalize lock screen experience

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly | $1.99 | per month |
| Yearly | $16.99 | per year |


## Frequently asked questions

### Is Molar Mass Calculator Pro free?

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

### Is Contactify free?

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

### Which has better reviews, Molar Mass Calculator Pro or Contactify?

Molar Mass Calculator Pro is rated higher. Molar Mass Calculator Pro averages 4.8 out of 5 from 6 ratings, while Contactify averages 2.6 from 5 ratings.

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

Neither Molar Mass Calculator Pro nor Contactify shows ads.

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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.*