Unit Converter and Calculator. vs ProcessChem
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Unit Converter and Calculator.
Effortlessly perform a vast array of unit conversions with this comprehensive mobile application. It offers real-time, accurate results across over 70 categories and 1450 units, featuring a user-friendly design and offline access.
- Real-time conversions
- Over 70 categories
- More than 1450 units
- Offline access
- User-friendly design
- Customizable settings
- Dark mode support
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Introducing the ultimate Unit Conversion mobile application designed to simplify your everyday calculations. With an intuitive interface and fast performance, our app makes converting units effortless. Whether you’re dealing with tons of categories, this app supports a wide range of categories and units. It has more than 70 categories and more than 1450 units. Features include: - Real-time conversions with accurate results. - User-friendly design for seamless navigation. - Customizable settings tailored to your preferences. - Offline access for all of them. - Quick access to your last used categories. - Append your favorite list of most useful units. - Dark mode support. - Small app sizes. Perfect for students, professionals, travelers, and anyone needing quick and reliable unit conversions. Make your calculations more efficient. Download Now! List of our categories; == Basic Units == - Length - Temperature - Area - Volume - Weight and Mass - Time == Engineering Units == - Pressure - Energy - Power - Force - Speed - Angle - Fuel Consumption - Data Storage - Volume - Dry - Velocity - Angular - Acceleration - Acceleration - Angular - Density - Specific Volume - Moment of Inertia - Moment of Force - Torque == Heat Units == - Fuel Efficiency - Mass - Fuel Efficiency - Volume - Temperature Interval - Thermal Expansion - Thermal Resistance - Thermal Conductivity - Specific Heat Capacity - Heat Density - Heat Flux Density - Heat Transfer Coefficient == Fluid Units == - Flow - Flow - Mass - Flow - Molar - Mass Flux Density - Concentration - Molar - Concentration - Solution - Viscosity - Dynamic - Viscosity - Kinematic - Surface Tension - Permeability == Light Units == - Luminance - Luminous Intensity - Illumination - Digital Image Resolution - Wavelength == Electricity Units == - Charge - Linear Charge Density - Surface Charge Density - Volume Charge Density - Current - Linear Current Density - Surface Current Density - Electric Field Strength - Electric Potential - Electric Resistance - Electric Resistivity - Electric Conductance - Electric Conductivity - Electrostatic Capacitance - Inductance == Magnetism Units == - Magnetomotive Force - Magnetic Field Strength - Magnetic Flux - Magnetic Flux Density == Radiology Units == - Radiation - Radiation - Activity - Radiation - Exposure - Radiation - Absorbed Dose If you have any questions, please do not hesitate to contact us, support@kemalbakacak.com
ProcessChem
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ProcessChem puts a chemical engineer's property tables, equation-of-state solvers, and unit-operation calculators in your pocket — no spreadsheet, no lookup binder, no internet connection required. PROPERTY LOOKUPS Pull density, viscosity, thermal conductivity, heat capacity, vapor pressure, heat of vaporization, compressibility factor, and surface tension for thousands of pure chemicals and mixtures. Hazard and safety data included: flash point, flammability limits, exposure limits, and carcinogen/GWP/ODP flags. Also covers five common polymers (HDPE, LDPE, PP, PET, PVC) by repeat-unit mass, for property lookups and the Heater case. PHASE EQUILIBRIUM & FLASH CALCULATIONS Run flash calculations across any two-property target — temperature, pressure, enthalpy, entropy, internal energy, or volume — to find the resulting phase state and composition. Powered by CoolProp's reference-quality equations of state for over 100 fluids, with a Peng-Robinson backend covering the rest. REACTIONS & EQUILIBRIUM Balance chemical reactions automatically, track excess reagent and conversion, and run full energy balances. A dedicated equilibrium solver finds multi-species reaction composition at any temperature and pressure. An electrochemistry mode computes cell voltage and electron balances for electrolysis and battery chemistry. MULTI-COMPONENT MIXTURES Peng-Robinson with ChemSep binary interaction parameters, bubble/dew point calculations, and per-component hazard data — across every mode in the app. PROCESS ENGINEERING CASES - Heater: heats or cools a batch or stream at constant pressure — give a final temperature and get the duty, or give a duty and get the temperature reached, melting and boiling included - Vessel Heater: a sealed, rigid vessel heated or cooled — finds the resulting pressure, phase and liquid level, and flags the liquid-full overpressure hazard - Fluidized Bed: finds the minimum fluidization and blow-out velocities for your gas rate and the resulting pressure drop, with reacting-bed conversion and composition in both batch and continuous-flow modes - Heat Exchanger: two streams exchange heat — give the duty or one outlet temperature and it finds the rest, refusing any pairing that would need heat to flow backwards UNITS, YOUR WAY A dedicated Units tab lets you pick your preferred unit for every quantity in the app, with a configurable Normal/Standard reference for gas-volume conversions. Save any calculation to a file in Files or iCloud Drive, so your work survives even if you delete the app. Built for process, chemical, and plant engineers, students, and anyone who needs a real thermodynamic answer faster than a lookup table can give one.
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Verdict
The clearest difference is in-app purchases: ProcessChem at none against Unit Converter and Calculator.'s 1. ProcessChem also leads on ads (none vs shown) and iOS requirement (13.0 vs 16.0). On price, update cadence and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Unit Converter and Calculator. sells 1 one-off in-app purchase. ProcessChem asks for nothing beyond the download.
Unit Converter and Calculator. ships an update monthly, ProcessChem every 6 weeks. The most recent releases landed on October 27, 2026 and October 24, 2026 respectively.
| Parameter | Unit Converter and Calculator. | ProcessChem |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (83 ratings) — better | — |
| Positive reviews | 28.0% of reviews | — |
| Number of ratings | 83 — better | — |
| Update frequency | Monthly — better | Every 6 weeks |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad | iPhone, iPad, iPod — better |
| Requires iOS | 16.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 19 MB | 407 MB |
| Age rating | 4+ | 4+ |
| Developer | Kemal Bakacak | Ron Mangalam Jacob |
In-app purchases
Unit Converter and Calculator.
- Premium, All Calculation Units$2.99
ProcessChem
No in-app purchases
Questions
Is Unit Converter and Calculator. free?
Is ProcessChem free?
Do Unit Converter and Calculator. or ProcessChem have ads?
Which is updated more often, Unit Converter and Calculator. or ProcessChem?
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