Units Free vs Unit Converter for Physics
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Units Free
Easily convert between various units across multiple categories like length, temperature, and weight. Access past conversions through a history list and send calculations via email. This free version offers core functionality with an option to upgrade for full category access.
- Multiple unit categories (length, temp, weight, etc.)
- Metric and imperial system support
- Conversion history list
- Send calculations via email
- iPad multitasking support
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Convert between many units from several categories and different unit systems (metric, imperial, ...). Features: - categories: length, temperature, capacity, weight, energy, power, pressure, area - access previous conversions from the history list - categories have different colors (in the history as well) - flip units - send calculations by email - support for the iPhone 6 and 6+ - support for the iPad multitasking (split view..) (Free version: requires upgrade to arbitrarily switch categories)
Unit Converter for Physics
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Unit Converter for Physics: Your Complete Physics Unit Conversion Tool Transform complex physics calculations into simple conversions with Unit Converter for Physics, the ultimate unit conversion application designed specifically for physics students, educators, and professionals. Comprehensive Unit Coverage Unit Converter for Physics offers extensive conversion capabilities across all essential physics quantities: - Length: Convert between meters, kilometers, centimeters, millimeters, micrometers, nanometers, miles, yards, feet, inches, nautical miles - Mass: Easily switch between kilograms, grams, milligrams, metric tons, pounds, ounces, slugs, and specialized maritime units like gross tons. - Time: Convert seconds, minutes, hours, days, weeks, months, years, milliseconds, and microseconds. - Volume: Transform between cubic meters, liters, milliliters, cubic feet, cubic inches, gallons, quarts, pints, fluid ounces, cubic centimeters, and specialized maritime units like gross tonnage. - Area: Convert square meters, square kilometers, hectares, acres, square miles, square feet, square inches, and square yards. - Temperature: Switch between Kelvin, Celsius, and Fahrenheit. - Speed: Convert meters per second, kilometers per hour, miles per hour, feet per second, and nautical units like knots. - Acceleration: Transform between meters per second squared, feet per second squared, standard gravity (g), and Gal units. - Density: Convert kilograms per cubic meter, grams per cubic centimeter, pounds per cubic foot, and more. - Pressure: Switch between pascal, bar, atmosphere, torr, pounds per square inch, and millimeters of mercury. - Force: Convert between newtons, kilonewtons, pound-force, and dyne. - Energy: Transform joules, kilojoules, calories, kilocalories, electron volts, BTUs, foot-pounds, and kilowatt-hours. - Power: Convert watts, kilowatts, megawatts, horsepower, BTU per hour, and foot-pounds per second. - Frequency: Switch between hertz, kilohertz, megahertz, gigahertz, and revolutions per minute. - Angle: Convert degrees, radians, gradians, minutes of arc, and seconds of arc. Educational Features Conversion Factor Display: Understand the mathematical relationship between units with clearly displayed conversion factors, enhancing your learning experience. Complete SI and FPS Systems: Master both International System of Units (SI) and Foot-Pound-Second (FPS) systems with comprehensive conversion options. Maritime Specialized Units: Navigate specialized maritime measurements including nautical miles, knots, and gross tonnage. User-Friendly Design Intuitive interface requiring minimal input to get accurate results Clean, distraction-free layout perfect for academic use convert units anytime, anywhere Unit Converter for Physics is the perfect companion for physics homework, lab reports, research papers, and professional calculations. Download today and transform the way you handle physics unit conversions!
Screenshots
Verdict
The clearest difference is update cadence: Unit Converter for Physics at every 10 days against Units Free's every 5 months. Units Free's advantage is iOS requirement (5.1.1 vs 18.6). On price, ads, in-app purchases 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. Units Free sells 1 one-off in-app purchase and Unit Converter for Physics sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Units Free ships an update every 5 months, Unit Converter for Physics every 10 days. The most recent releases landed on August 15, 2026 and September 19, 2026 respectively.
| Parameter | Units Free | Unit Converter for Physics |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 1 — better | — |
| Update frequency | Every 5 months | Every 10 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 5.1.1 — better | 18.6 |
| Further details — not scored | ||
| Size | 3 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Piet Jonas | Jatuphol Jaturapat |
In-app purchases
Units Free
- Units Free Upgrade$0.99
Unit Converter for Physics
- Unlock Solution$0.99
Questions
Is Units Free free?
Is Unit Converter for Physics free?
Do Units Free or Unit Converter for Physics have ads?
Which is updated more often, Units Free or Unit Converter for Physics?
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