Ratio Calc! app icon

Apps Like Ratio Calc! for iPhone and iPad

Radio control car ratio calculator tool.

The app calculates final drive ratio and rollout for radio control cars. Users can select cars by manufacturer and model, inputting pinion and spur gear sizes.

by David Mills★ 4.525 ratingsSports$2.99Data updated 2026-09-19

Ratio Calc! screenshots

Ranked alternatives

Showing 281–300 of 1,000 ranked alternatives.

  1. CVR Calc app icon

    CVR Calc

    Global Vascular Access, LLC

    ★ 3.327 ratingsMedicalFreeData updated 2026-09-15
  1. SimFly Pad app icon

    SimFly Pad

    Chongqing SeeingSky Network Technology Co., ltd

    Use flight checklists and camera tools

    Access flight checklists to manage pre-flight, in-flight, and post-flight procedures. Capture and record flight moments using the built-in camera. Sync photos and videos to the cloud for storage.

    ★ 4.613 ratingsUtilitiesFreeData updated 2026-09-06
  2. Gear Simulation & Calculation app icon

    Gear Simulation & Calculation

    Heng Jia Liang

    Simulate gears, calculate ratios, track speed

    Calculate ratios, torque, and speed for train systems. Input teeth numbers and speeds to determine outputs. Simulate train operation instantly. Preview system functionality before 3D printing.

    ★ 4.28 ratingsUtilities$2.99Data updated 2026-09-06
  3. Machining App for Machinists app icon

    Machining App for Machinists

    Motionics, LLC

    Machining calculator and reference tool.

    The app provides calculations for drilling, milling, and turning operations. It also serves as a reference tool with charts for tap sizes, drill sizes, and machining parameters for various materials and tool types.

    ★ 2.19 ratingsProductivityFreeData updated 2026-09-28
  4. Spool Ethanol Analyzer app icon

    Spool Ethanol Analyzer

    Ajay Rajeev

    Connect to sensor, analyze content and temperature

    Connects to Wireless Sensor Kit or Handheld to measure content and fuel temperature. Displays real-time data via Bluetooth. Includes mixing ratio calculator for fuel blends. Functions without the sensor kit.

    ★ 4.114 ratingsUtilitiesFreeData updated 2026-09-15
  5. Proportional Scale app icon

    Proportional Scale

    Courtney Parsons

    Calculate image dimensions without distortion.

    The app calculates new image dimensions while maintaining aspect ratio to prevent distortion. It offers fraction and percent modes, and an image scale tool for precise pixel sizing with a preview.

    ★ 4.514 ratingsUtilities$1.99Data updated 2026-09-11
  6. PiniOn app icon

    PiniOn

    PiniOn Tecnologia S.A.

    Complete missions and earn points

    Complete missions at malls, cinemas, supermarkets, pubs, restaurants, or home. Take pictures, answer questions, and share opinions about brands, products, and services. Earn money and points for each completed task.

    ★ 5.04 ratingsLifestyleFreeData updated 2026-09-08
  7. Psychrometrics app icon

    Psychrometrics

    Wassim Murr

    Calculate air properties and track moisture levels

    Calculate air properties like temperature, humidity, and dew point. Determine enthalpy and moisture content. Convert between psychrometric units. Visualize air state diagrams. Export data for engineering analysis.

    ★ 4.212 ratingsUtilities$2.99Data updated 2026-09-06

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.