Conversion Calculator vs ConvertAll Drag
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.
ConvertAll Drag
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Unit converter with 20 categories and 182 units. Search categories and units, save favorite pairs, and reopen recent conversions. Copy or share results. Includes calculator, BMI, tip, and date tools. Supports 28 languages and theme settings.
Screenshots
Verdict
The clearest difference is in-app purchases: ConvertAll Drag at none against Conversion Calculator's 1. ConvertAll Drag also leads on iOS requirement (13.0 vs 17.0). On price, update cadence, ads 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. Conversion Calculator sells 1 one-off in-app purchase. ConvertAll Drag asks for nothing beyond the download.
Conversion Calculator ships an update every 5 weeks, ConvertAll Drag every 2 months. The most recent releases landed on November 12, 2026 and November 13, 2026 respectively.
| Parameter | Conversion Calculator | ConvertAll Drag |
|---|---|---|
| Price | Free | Free |
| Rating | 4.8 (165 ratings) — better | — |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 165 — better | — |
| Update frequency | Every 5 weeks — better | Every 2 months |
| Ads | No | No |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | — |
| Devices | iPhone, iPad, Apple Watch — better | iPhone, iPod |
| Requires iOS | 17.0 | 13.0 — better |
| Further details — not scored | ||
| Size | 10 MB | 23 MB |
| Age rating | 4+ | 4+ |
| Developer | Collins Cheruiyot | Shin YuJin |
In-app purchases
Conversion Calculator
- Unlimited access forever$8.99
ConvertAll Drag
No in-app purchases
Questions
Is Conversion Calculator free?
Is ConvertAll Drag free?
Do Conversion Calculator or ConvertAll Drag have ads?
Which is updated more often, Conversion Calculator or ConvertAll Drag?
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