3Calc app icon

Apps Like 3Calc for iPhone and iPad

by Tongze Mao★ 5.03 ratingsUtilities$0.99Data updated 2026-09-06

Ranked alternatives

Showing 281–300 of 1,000 ranked alternatives.

  1. Halliburton eRedBook® Mobile app icon

    Halliburton eRedBook® Mobile

    Halliburton

    Industry data for oil and gas wells

    The app provides instant access to key dimensions and strengths for pipe. Users can look up specifications for tubulars to quickly calculate capacity and annulus volumes in various units.

    ★ 3.832 ratingsBusinessFreeData updated 2026-09-27
  1. Basic Calculator Biz app icon

    Basic Calculator Biz

    Imple, Inc.

    Calculate and view formulas clearly

    Performs arithmetic operations including addition, subtraction, multiplication, and division. Displays full calculation formulas for error detection. Includes standard functions comparable to commercial calculators.

    ★ 5.05 ratingsUtilitiesFreeData updated 2026-09-12
  2. CalcRx app icon

    CalcRx

    Dabbling Badger LLC

    Calculate prescriptions and track days supply

    Calculate prescription dispense quantities and billable days supply with specialized tools for tablets, capsules, liquids, and more. Input prescription directions to automatically determine dosing schedules and tapering regimens.

    ★ 4.715 ratingsMedicalFreeData updated 2026-09-10
  3. Can Swipe Calculator 5 View app icon

    Can Swipe Calculator 5 View

    TAKAHIRO AYA

    Calculate and to switch equations

    Perform calculations by swiping to switch between operands. Tap operators to initiate operations. calculation steps with a back button. Input values above operators for clarity. Track previous steps for review.

    ★ 4.833 ratingsProductivityFreeData updated 2026-09-09
  4. SlipStick app icon

    SlipStick

    Steve Glenner

    Calculate with a slide rule

    Perform multiplication, division, logarithmic, and trigonometric calculations using a slide rule interface. Adjust scales for precise measurements. Manual operation requires sliding components to compute results.

    ★ 4.69 ratingsEducation$0.99Data updated 2026-10-25
  5. CalcKey: Calculator Keyboard app icon

    CalcKey: Calculator Keyboard

    RIGHT TRACKS IT LIMITED

    Calculate within messages and notes

    Allows users to perform calculations directly within apps like Messages, WhatsApp, and Notes. It integrates a for quick math during typing. Real-time results appear as users input numbers.

    ★ 4.24 ratingsProductivityFreeData updated 2026-09-06
  6. FastCalc app icon

    FastCalc

    Andre Ponzo

    Calculator with large keys and display.

    The app features large, easy-to-read keys for fast input and a permanent display of the user's expression. Results appear automatically as typing occurs, eliminating the need for an equals key.

    ★ 4.84 ratingsProductivity$1.99Data updated 2026-09-12

How we rank alternatives

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