# Chemical Engineering Formulate vs Handwritten Quick Notes

The clearest difference is price: Handwritten Quick Notes at Free against Chemical Engineering Formulate's $4.99. Handwritten Quick Notes also leads on in-app purchases (none vs 1) and iOS requirement (16.6 vs 18.6). Chemical Engineering Formulate's advantage is ads (none vs shown). On review sentiment, update cadence, monetization model and device support there is nothing between them.

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

Chemical Engineering Formulate ships an update every 8 months, Handwritten Quick Notes every 6 months. The most recent releases landed on October 6, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Chemical Engineering Formulate | Handwritten Quick Notes |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 6 months** |
| Monetization | Paid | Paid |
| Size | 19 MB | 15 MB |
| Requires iOS | 18.6 | **16.6** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Historycentral.com](https://appshunter.io/developer/1744330560) | [Digital Hole Pvt. Ltd.](https://appshunter.io/developer/917701060) |

## 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 |


### Handwritten Quick Notes

[App page](https://appshunter.io/ios/app/handwritten-quick-notes-jot/id6760898657)

Capture your thoughts naturally with digital convenience. This app allows you to create handwritten notes or convert typed text into realistic handwriting, perfect for studying, working, or planning.

**Highlights:** Natural handwriting experience, Convert typed text to handwriting, Multiple handwriting styles, Organize and preview notes, Export notes as images, Share notes across apps

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

**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 Handwritten Quick Notes free?

Handwritten Quick Notes is free to download, with no in-app purchases.

### Do Chemical Engineering Formulate or Handwritten Quick Notes have ads?

Handwritten Quick Notes shows ads; Chemical Engineering Formulate does not.

### Which is updated more often, Chemical Engineering Formulate or Handwritten Quick Notes?

Chemical Engineering Formulate ships an update every 8 months, and Handwritten Quick Notes every 6 months. Most recently, Chemical Engineering Formulate was updated on October 6, 2026 and Handwritten Quick Notes on October 2, 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.*