Comparison

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.

Head to head
About

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.

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
Read full description

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.

About

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.

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
Read full description

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 you’re 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

Chemical Engineering Formulate4 screens
Handwritten Quick Notes4 screens

Verdict

The call

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

CostPrice Β· In-app purchases Β· Ads Β· Monetization

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.

UpkeepUpdate frequency

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.

Scorecard4 real differences Β· 4 level
Chemical Engineering Formulate versus Handwritten Quick Notes: the parameters behind the verdict, then further details
ParameterChemical Engineering FormulateHandwritten Quick Notes
Price$4.99Free β€” better
Positive reviews0.0% of reviews0.0% of reviews
Update frequencyEvery 8 monthsEvery 6 months β€” better
AdsNo β€” betterYes
In-app purchasesYesNo β€” better
MonetizationPaidPaid
DevicesiPhone, iPadiPhone, iPad
Requires iOS18.616.6 β€” better
Further details β€” not scored
Size19 MB15 MB
Age rating4+4+
DeveloperHistorycentral.comDigital Hole Pvt. Ltd.

Customer experience

Chemical Engineering Formulate

Written reviews7 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

Handwritten Quick Notes

Written reviews1 reviews
Positive0.0%
Neutral0.0%
Negative100.0%

In-app purchases

1 purchases

Chemical Engineering Formulate

One-time1
  • Chemistry Pro$3.99
None

Handwritten Quick Notes

No in-app purchases

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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