US Unit Converter vs US Units Guide
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
US Unit Converter
Easily convert between US customary units and the International System of Units for various measurements like length, weight, area, volume, and temperature. Access conversion history and remove ads with a premium upgrade.
- Length conversion
- Weight conversion
- Area conversion
- Liquid volume conversion
- Temperature conversion
- Conversion history
- Ad-free option
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"US Unit Converter" converts the units of length, weight, area, liquid volume, and temperature used in the United States into the International System of Units such as meters and kilograms. Select the category of the unit you want to convert at the top of the screen, enter the value, and you can convert immediately. The units that can be converted are as follows. [Unit of length] Meters [m], centimeters [cm], millimeters [mm], kilometers [km], inches [in], feet [ft], yards [yd], miles [mile] [Unit of weight] Kilogram [kg], gram [g], pound [lb], ounce [oz] [Unit of area] Square meters [m2], Are [a], hectares [ha], square kilometers [km2], square feet [ft2], square inches [in2], square miles [mi2], acres [acre], square yards [yd2] [Unit of liquid volume] Litre [L], milliliter [ml], fluid ounce [fl oz], cup [cup], pint [pt], quart [qt], gallon [gal] [Temperature unit] Celsius [℃], Fahrenheit [℉] In the free version, you can see only the previous data in the conversion history. If you want to see 100 historical data or hide ads, please consider purchasing the premium version in the app. ---------------------- Terms of Service and Privacy Policy: https://akikibai-labolatory.jimdofree.com/privacy-policy/
US Units Guide
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US Units Guide helps metric-system users understand US customary measurements in everyday American life. Use it when you see Fahrenheit weather, feet and inches, pounds, miles, gallons, MPG, tire pressure, grocery prices, fuel prices, housing area, US recipes, or parcel weights. Core tools: - Weather: Fahrenheit and Celsius - Height and weight: ft/in, cm, lb, kg - Distance, speed, fuel economy, tire pressure, and fuel price - Home area, grocery price, kitchen volume, and parcel weight - Reverse conversion when you need to go from metric back to US units The app is built for practical daily use, not a giant scientific unit encyclopedia. Your language, region, history, text size, appearance, and exchange-rate choices are stored on your device. No account is required, and this version does not include third-party advertising or cross-app tracking.
Screenshots
Verdict
The clearest difference is ads: US Units Guide at none against US Unit Converter's shown. US Units Guide also leads on update cadence (monthly vs every 6 months). US Unit Converter's advantage is iOS requirement (15.6 vs 17.0). On price, 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. US Unit Converter sells 1 one-off in-app purchase and US Units Guide sells 3 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.
US Unit Converter ships an update every 6 months, US Units Guide monthly. The most recent releases landed on November 7, 2026 and October 31, 2026 respectively.
| Parameter | US Unit Converter | US Units Guide |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (110 ratings) — better | — |
| Positive reviews | 44.4% of reviews | — |
| Number of ratings | 110 — better | — |
| Update frequency | Every 6 months | Monthly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, iPod — better | iPhone, iPad |
| Requires iOS | 15.6 — better | 17.0 |
| Further details — not scored | ||
| Size | 6 MB | 3 MB |
| Age rating | 4+ | 4+ |
| Developer | Kei Suefuji | BOTONG BAO |
In-app purchases
US Unit Converter
- PREMIUM$3.99
US Units Guide
- Found it useful$0.99
- Support maintenance$2.99
- Keep it going$4.99
Questions
Is US Unit Converter free?
Is US Units Guide free?
Do US Unit Converter or US Units Guide have ads?
Which is updated more often, US Unit Converter or US Units Guide?
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