Chemical Engineering Formulate vs Handwritten Quick Notes
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Chemical Engineering Formulate
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.
- 1,500+ formulas and calculators
- 700+ engineering calculators
- US/Metric unit toggle
- Dual-unit display
- Searchable reference tables
- Offline functionality
- Save and share calculations
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CHEMICAL ENGINEER is the essential tool for Chemical Engineers, Process Engineers, and engineering students. With over 1,500 formulas and calculators, this is the most comprehensive chemical engineering reference app available. The app features 700+ engineering calculators across 50 categories, 750 conversion formulas, 8 temperature scales, and 14 reference tables. All formulas support US and Metric (SI) units with one-tap toggle and dual-unit display. CORE CHEMICAL ENGINEERING - Heat Transfer -- LMTD, overall heat transfer, fin efficiency, radiation, Fourier's law - Fluid Mechanics -- Reynolds number, Bernoulli, Darcy-Weisbach, Hagen-Poiseuille - Thermodynamics -- Ideal gas, Clausius-Clapeyron, Antoine equation, compressibility - Reaction Kinetics -- Arrhenius equation, rate laws, CSTR/PFR design, Levenspiel - Mass Transfer -- Fick's law, mass transfer coefficients, wetted wall columns - Distillation -- McCabe-Thiele, Fenske, Underwood, relative volatility - Dimensionless Numbers -- Reynolds, Nusselt, Prandtl, Schmidt, Sherwood, Grashof UNIT OPERATIONS Filtration, Packed/Fluidized Beds, Compressor Sizing, Mixing, Cooling Towers, Membrane Separation, Crystallization, Liquid-Liquid Extraction, Adsorption PROCESS & SAFETY Process Economics, Process Control, Safety Engineering, Corrosion and Electrochemistry ENVIRONMENTAL Air Quality, River/Lake/Soil Pollution, Infiltration and Recharge, Evaporation, Waste ADDITIONAL CATEGORIES Piping (70), Pressure Stress (109), Material Weight (101), Area Formulas (60), Flat Plates, Pumps, Pump Laws, Steam, Crusher, Vapor Separators, Equilibrium, Cogeneration, and more CONVERSIONS BTU, Cubic, Flows, Ft-Lbs, Horsepower, HVAC, Hydraulic, Linear, Liquid, Metric (460), Power, Pressures, Square Measures, Watts, Weights TEMPERATURE SCALES Celsius, Fahrenheit, Kelvin, Rankine, Reaumur, Newton, Delisle, Romer 14 REFERENCE TABLES Chemical Properties, Steam Tables, Pipe Schedules, Material Densities, pH Scale, Engineering Constants, Chemical Resistance, Water Quality, Critical Properties, Antoine Constants, Heat Transfer Coefficients, Dimensionless Numbers, Gas Properties, Flammability Limits FEATURES - US/Metric toggle with dual-unit display - Save calculations and favorites - Share and export results - Searchable reference tables - Dark mode interface - Works offline Don't see a formula you need? Email us and we'll include it in the next update.
Handwritten Quick Notes
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.
- Natural handwriting experience
- Convert typed text to handwriting
- Multiple handwriting styles
- Organize and preview notes
- Export notes as images
- Share notes across apps
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Handwritten Quick Notes - Write Naturally, Save Digitally Turn your ideas into beautiful handwritten notes with the comfort of digital convenience. Handwritten Quick Notes lets you create natural-looking handwritten content or instantly convert typed text into handwriting-perfect for study, work, and everyday planning. Whether youβre a student, professional, or creative thinker, this app helps you capture thoughts in a way that feels personal and authentic-just like writing on paper. Key Features Write Naturally β’ Smooth and distraction-free handwriting experience β’ Feels like writing on real paper β’ Perfect for quick notes, journaling, and ideas Text to Handwriting β’ Convert typed text into realistic handwritten notes β’ Multiple handwriting styles for a natural look β’ Great for assignments, notes, and aesthetic content Smart & Simple β’ Preview notes before saving β’ Organize notes for quick and easy access β’ Minimal, clean interface for better focus Export & Share β’ Save notes as images β’ Easy to share across apps β’ Create clean, printable handwritten notes Privacy policy: https://digitalhole.github.io/Handwritten%20Digital%20Notes.html Standard Apple Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
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.
Scored on Price Β· Rating Β· Positive reviews Β· Number of ratings Β· Update frequency Β· Ads Β· In-app purchases Β· Monetization Β· Best chart rank Β· Devices Β· Requires iOS
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.
| Parameter | Chemical Engineering Formulate | Handwritten Quick Notes |
|---|---|---|
| Price | $4.99 | Free β better |
| Positive reviews | 0.0% of reviews | 0.0% of reviews |
| Update frequency | Every 8 months | Every 6 months β better |
| Ads | No β better | Yes |
| In-app purchases | Yes | No β better |
| Monetization | Paid | Paid |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 18.6 | 16.6 β better |
| Further details β not scored | ||
| Size | 19 MB | 15 MB |
| Age rating | 4+ | 4+ |
| Developer | Historycentral.com | Digital Hole Pvt. Ltd. |
Customer experience
Chemical Engineering Formulate
Handwritten Quick Notes
In-app purchases
Chemical Engineering Formulate
- Chemistry Pro$3.99
Handwritten Quick Notes
No in-app purchases
Questions
Is Chemical Engineering Formulate free?
Is Handwritten Quick Notes free?
Do Chemical Engineering Formulate or Handwritten Quick Notes have ads?
Which is updated more often, Chemical Engineering Formulate or Handwritten Quick Notes?
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