This tool quickly calculates roof pitch by converting between imperial and metric units. Input rise and run in various measurements to instantly get pitch in degrees, radians, percentages, or x:12 format.
3.0(6 ratings)
FreeIn-App Purchases
Best apps like Radiator / BTU Calculator
51+ similar apps compared and reviewed
3.6 avg rating
10 free apps
Updated July 2026
Radiator / BTU Calculator is great, but it's not the only option. Explore 51+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.
Top Alternatives to Radiator / BTU Calculator
1.4(21 ratings)
Free
Enhance your travel with a smart dashcam experience. Connect via Wi-Fi to view live footage, capture photos and videos, and download recordings in various formats directly to your smartphone.
Pipe Flow Wizard - Calculator by Daxesoft Ltd
Flow Rate & Pressure Loss CalcWorth Considering
π§ Utilities
4.5(98 ratings)
FreeIn-App Purchases
Calculate fluid flow rate and pressure loss in pipes. This app helps engineers determine pipe diameter, maximum pipe length, and friction loss for both liquid and gas flows, including fittings and elevation changes. Results can be shared as Excel or PDF reports.
More apps like Radiator / BTU Calculator
4
Duct Calculator
by OMIKRON MAKINE MUHENDISLIGI IC VE DIS TICARET SANAYI LIMITED SIRKETI
Free
This mobile application simplifies duct size calculations for various needs. It offers a straightforward way to determine the correct dimensions for your ductwork, ensuring efficient airflow and system performance.
Duct size calculationAirflow determinationEfficient system performance
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(1)
free5
Tone Generator: Frequency App
Hearing Test, Speaker Cleaner
Free
Generate various audio tones like sine, square, sawtooth, and triangle waves across a wide frequency range. Adjust frequencies by swiping and utilize built-in features for fun hearing tests or to clean your device's speaker.
Sine, square, sawtooth, triangle wave generationAdjustable frequency via swipeBuilt-in hearing test sweep
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free with in-app purchases6
Resideo Pro
by Resideo Technologies, Inc.
Free
This app streamlines the installation and configuration of HVAC and security products from specific brands. It allows professionals to securely connect to devices, verify functionality, and manage customer registrations. Additionally, it provides access to technical resources and company installation data.
Simplify installation and configurationSecurely connect via Bluetooth, Wi-Fi, or QR codeVerify device functionality
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MotorData OBD ELM car scanner
Car diagnostic. Dashboard.
Free
Transform your smartphone into a comprehensive car diagnostic tool. Read and clear trouble codes, monitor real-time vehicle performance, and customize your dashboard for a deeper understanding of your car's health. Includes free engine diagnostics with optional advanced features for specific brands.
Deep diagnostics for up to 25 ECUsOne-touch scan for trouble codesDecode DTCs and clear Check Engine Light
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free with in-app purchases8
Cubic Yards Calculator + Cost
Feet, yard, inch, meter,...
Free
Easily calculate the volume of various shapes in cubic yards for landscaping materials, construction, or waste disposal. Get an estimated cost for your materials based on price per unit.
Cubic yards volume calculationMaterial cost estimationSupports cube, rectangular, cylinder, cone, pyramid, and ball shapes
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free with in-app purchases9
OBDeleven VAG
Scan your car & clear faults
Free
Transform your smartphone into a powerful car diagnostic tool. Easily scan, diagnose, and customize your vehicle's settings. Access advanced features like coding and live data to save time and money on car maintenance.
Advanced diagnosticsCoding and adaptationsOutput tests
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free with in-app purchases10
Distance Tool
Area, map & GPS calculator
Free
Calculate distances between points and areas of polygons on a map. Supports metric and imperial units, GPS location, and freehand drawing. Altitude calculation is also available, with or without data connectivity.
Distance calculation between pointsArea calculation for polygonsGPS location dropping
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free with in-app purchases