Is unitMeasure Worth Buying? Features, Offline Use, and What You Get
unitMeasure is worth buying if you want a fast, private, offline unit converter for Android and the units you need are covered by its 17 categories and 150+ conversions. It runs without internet, shows results as you type, asks for no permissions, and takes under 2 MB of space. It requires Android 5.0 (Lollipop) or later and is purchased through the official website's "Buy Now" option. If you need a converter on iOS, a web-based tool, or units outside its list, it is not the right fit.
What unitMeasure actually does
unitMeasure is an Android unit conversion app built around three claims: it works completely offline, it converts in real time while you type, and it is privacy-oriented.
- Offline and instant: Conversions run entirely on the device. No connection is needed, and results appear as you enter values rather than after you press a button.
- No permissions: According to the official site, the app uses no permissions, so it does not track your location, record you, show ads, or sell data to third parties.
- Small footprint: The app takes slightly less than 2 MB on the phone — the site compares it to a 4 MP JPEG or a one-minute MP3.
- Design and display: Four themes (Light, Day, Dark, Night), Material Design, and landscape mode support.
The offline design is the main practical difference from web converters and from apps that need a network call. It matters in places with no signal — a basement, a plane, a rural site — or when you simply do not want a conversion tool phoning home.
Supported conversions: check this before you buy
The app covers 17 categories and well over 150 conversions. The official list includes:
| Category | Example units |
|---|---|
| Length | Inches, centimeters, feet, yards, meters, miles, kilometers, picometers, millimeters, light-years |
| Volume | Teaspoons, tablespoons, cups, fluid ounces, pints, quarts, gallons, cubic feet/inches/centimeters, milliliters, liters, deciliters |
| Energy | Joules, kilojoules, calories, kilocalories, inch-pounds, foot-pounds, megawatt-hours, kilowatt-hours, electron volts, BTUs, barrels of oil, horsepower |
| Time | Milliseconds through centuries, including fortnights, months, years, decades |
| Digital storage | Bits, bytes, kilobytes through petabytes, kilobits through gigabits |
| Mass/Weight | Ounces, grams, kilograms, pounds, stones, metric tons, tons US, slugs, grains |
| Fuel efficiency | MPG, km/L, L/100 km, gallons per 100 miles, miles per liter (US & UK) |
| Area | Square kilometers/meters/miles/yards/feet/inches, hectares, acres, ares |
| Pressure | Pascals, megapascals, kilopascals, PSI, PSF, atmospheres, bars, mmHg, inHg |
| Angle | Degrees, gradians, minutes, mils, quadrants, radians |
The site lists these ten categories explicitly and states the total is 17 categories with 150+ conversions, so the remaining categories are not named on the page. If your work depends on a specific unit — say a niche engineering or cooking measure — confirm it against the in-app list before purchasing, since the published page does not enumerate every category.
Who should buy it, and who should not
Buy it if:
- You use Android 5.0 or later and want conversions available with no signal.
- You value a no-permission, no-ad, no-tracking tool and want to avoid ad-supported converters.
- You convert across common categories like length, volume, mass, area, pressure, energy, time, storage, fuel efficiency, and angle.
- You want a lightweight app that will not eat storage.
Skip it if:
- You are on iOS or want a browser-based converter.
- You need a unit category or specific unit not covered by the app's list.
- You want a free tool — the site directs users to "Buy Now" and "Purchase now to get started," and no free tier is described.
How to buy and get started
- Go to the official unitMeasure website (unitmeasure.xyz).
- Use the Buy Now option to purchase the app.
- Install it on an Android device running Android 5.0 (Lollipop) or newer.
- Open the app, pick a category, and start typing a value — the converted result appears in real time.
- Optionally switch themes (Light, Day, Dark, Night) or rotate to landscape.
The site does not publish a price, payment methods, or whether a trial exists, so check those details at the point of purchase rather than assuming.
The bottom line
unitMeasure's case rests on offline speed, a tiny install, and a strict no-permission privacy stance — not on breadth beyond its stated 150+ conversions. If those priorities match how you use a converter and your units are on the list, it is a straightforward purchase. If you need broader coverage, another platform, or a free option, look elsewhere.