# Chemical Engineering Formulate vs ShareLink Pro

The clearest difference is price: ShareLink Pro at Free against Chemical Engineering Formulate's $4.99. ShareLink Pro also leads on review sentiment (36% vs 0%) and in-app purchases (none vs 1). On ads and device support there is nothing between them.

ShareLink Pro is free to download; Chemical Engineering Formulate costs $4.99 up front. Chemical Engineering Formulate sells 1 one-off in-app purchase. ShareLink Pro asks for nothing beyond the download.

Chemical Engineering Formulate ships an update every 8 months, ShareLink Pro every 3 months. The most recent releases landed on October 6, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Chemical Engineering Formulate | ShareLink Pro |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | — | **[3.2 (13 ratings)](https://appshunter.io/ios/app/sharelink-pro/id1442376796/reviews)** |
| Number of ratings | — | **13** |
| Positive reviews | 0.0% of reviews | **36.4% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 months** |
| Monetization | Paid | **Free** |
| Size | 19 MB | 54 MB |
| Requires iOS | 18.6 | **14.2** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Extron Electronics](https://appshunter.io/developer/398254045) |

## What reviewers say

### Chemical Engineering Formulate

[App page](https://appshunter.io/ios/app/chemical-engineering-formulate/id354670363)

This comprehensive reference tool provides over 1,500 formulas, calculators, and conversion charts for chemical engineering professionals and students. It covers a wide range of topics including heat transfer, fluid mechanics, and reaction kinetics, with support for both US and Metric units.

**Highlights:** 1,500+ formulas and calculators, 700+ engineering calculators, US/Metric unit toggle, Dual-unit display, Searchable reference tables, Offline functionality, Save and share calculations

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chemistry Pro | $3.99 | one-time |


### ShareLink Pro

[App page](https://appshunter.io/ios/app/sharelink-pro/id1442376796)

Wirelessly share content from your iPhone or iPad to a room display for presentations. Supports sharing images, videos, and screen mirroring. Offers modes for open collaboration or moderated control.

**Highlights:** Wireless content sharing, Screen mirroring, Simultaneous multi-item sharing, Basic Collaboration Mode, Moderator Mode, Easy integration with AV systems

**In-app purchases:** none


## Frequently asked questions

### Is Chemical Engineering Formulate free?

Chemical Engineering Formulate costs $4.99, and also offers in-app purchases.

### Is ShareLink Pro free?

ShareLink Pro is free to download, with no in-app purchases.

### Do Chemical Engineering Formulate or ShareLink Pro have ads?

Neither Chemical Engineering Formulate nor ShareLink Pro shows ads.

### Which is updated more often, Chemical Engineering Formulate or ShareLink Pro?

Chemical Engineering Formulate ships an update every 8 months, and ShareLink Pro every 3 months. Most recently, Chemical Engineering Formulate was updated on October 6, 2026 and ShareLink Pro on September 26, 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.*