Conversion Calculator vs Scale Switch
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Conversion Calculator
This utility app offers a comprehensive unit conversion tool for various needs, including cooking, travel, and work. It supports over 120 units across 15 categories, with metric and imperial options. The app works offline and allows for customization of displayed decimals and category order.
- 15 categories and 120+ units
- Metric and imperial conversions
- Cooking, weight, length, temperature, and more
- Offline functionality
- Customizable decimal display
- Apple Watch app
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Convert cooking measurements, kg to lbs, feet to meters, Celsius to Fahrenheit and psi to bar in a tap. Conversion Calculator is a fast, clean unit converter for the kitchen, travel, the gym, school and work. COOKING & KITCHEN • Cups, tablespoons, teaspoons, fluid ounces, pints, quarts and gallons • US and imperial (UK) cups, pints and gallons kept separate, so recipes come out right • Grams, ounces and pounds for baking WEIGHT & BODY • kg to lbs, stones, ounces, grams and milligrams LENGTH, AREA & LAND • Feet, inches, meters, cm, miles, km, yards and nautical miles • Square feet, square meters, acres and hectares TEMPERATURE, SPEED & MORE • Celsius, Fahrenheit and Kelvin • km/h, mph, knots and m/s • Energy: calories, kcal, joules and kWh • Data: bytes, KB, MB, GB and TB • Time: seconds to hours PRESSURE, FUEL, POWER & MORE • Pressure: psi, bar, kPa, atm, mmHg and inHg • Fuel economy: mpg (US and UK), L/100 km and km/L • Power: horsepower (hp), kW and watts • Torque: N·m, lbf·ft and kgf·m • Force: newtons, lbf and kgf • Angle: degrees, radians and gradians MADE FOR EVERYDAY USE • 15 categories and 120+ units, metric and imperial • Swap units in one tap and copy the result • Reorder categories so the ones you use are on top, or hide the rest with Pro • Choose how many decimals to show • Apple Watch app for conversions on your wrist • Works offline Converting is free. Pro is an optional one-time purchase.
Scale Switch
This utility app simplifies unit conversions with an intuitive interface. Easily convert between various units for time, data, temperature, area, volume, and more. It's designed for quick, reliable conversions on the go.
- Easy-to-use interface for conversions
- Wide range of supported units
- Converts time, data, temperature, area, volume, and more
- Intuitive and clutter-free design
- Quick and reliable results
- Supports various measurement systems
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Simplify your life with our all-in-one unit conversion app. Whether you're cooking, planning a trip, or working on a project, this app makes conversions seamless and intuitive. Key Features: Easy-to-Use Interface: Just type a numeric value followed by its original unit and the target unit. Example: "1.5h to min" converts hours to minutes. "20 C to F" converts Celsius to Fahrenheit. "1 sqft to sqm" converts square feet to square meters. Wide Range of Supported Units: Time: Seconds, minutes, hours, days, weeks. Digital Data: Bits, bytes, kilobytes, megabytes, gigabytes, and more. Temperature: Celsius, Fahrenheit, Kelvin. Area: Square meters, square feet, acres, hectares, and more. Volume: Milliliters, liters, US and Imperial measurements. Fuel Efficiency: Kilometers per liter, miles per gallon, liters per 100km. Length: Millimeters, centimeters, inches, feet, yards, miles, and more. Mass: Grams, kilograms, ounces, pounds, tons, and more. Power: Watts, kilowatts, horsepower, BTU/h. Intuitive Design: Quickly find what you need with a clean, user-friendly layout. Why Choose This App? No complex menus or unnecessary clutter—just type, convert, and get your answer. Perfect for professionals, students, and anyone needing quick, reliable conversions on the go. Download now and convert like a pro!
Screenshots
Verdict
The clearest difference is in-app purchases: Scale Switch at none against Conversion Calculator's 1. Scale Switch also leads on rating (5.0 vs 4.8). Conversion Calculator's advantage is ratings volume (165 vs 1) and update cadence (every 5 weeks vs every 4 months). On price, ads, device support and iOS requirement 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. Conversion Calculator sells 1 one-off in-app purchase. Scale Switch asks for nothing beyond the download.
Scale Switch holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Conversion Calculator has 165 ratings behind it against 1, so its average is the more settled of the two.
Conversion Calculator ships an update every 5 weeks, Scale Switch every 4 months. The most recent releases landed on November 12, 2026 and October 30, 2026 respectively.
| Parameter | Conversion Calculator | Scale Switch |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (165 ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 165 — better | 1 |
| Update frequency | Every 5 weeks — better | Every 4 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPad |
| Requires iOS | 17.0 — better | 18.1 |
| Further details — not scored | ||
| Size | 10 MB | 2 MB |
| Age rating | 4+ | 4+ |
| Developer | Collins Cheruiyot | Alberto Purpura |
In-app purchases
Conversion Calculator
- Unlimited access forever$8.99
Scale Switch
No in-app purchases
Questions
Is Conversion Calculator free?
Is Scale Switch free?
Which has better reviews, Conversion Calculator or Scale Switch?
Do Conversion Calculator or Scale Switch have ads?
Which is updated more often, Conversion Calculator or Scale Switch?
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