Janus Calculator app icon

Apps Like Janus Calculator for iPhone and iPad

Standard and RPN programmable calculators.

The app provides two calculators: one using Standard Notation and another using Reverse Polish Notation. Both calculators are programmable and include finance and scientific functions, plus 45 physical constants.

by Geoffrey Domm★ 2.01 ratingsProductivityFreeData updated 2026-09-14

Janus Calculator screenshots

Ranked alternatives

Showing 501–520 of 1,000 ranked alternatives.

  1. Electrical Tools and Reference app icon

    Electrical Tools and Reference

    Pro Certs Software Ltd

    Access charts and

    Access charts, tables, and calculators for quick . View and fill out forms, review technical guides, and check product safety recalls. Look up cable ratings and other industry-specific data instantly.

    ★ 1.01 ratingsProductivity$24.99Data updated 2026-09-08
  2. McDantim EasyBlend Calculator app icon

    McDantim EasyBlend Calculator

    McDantim, Inc.

    Calculate gas blend for beverage dispensing

    Calculate optimal CO2 and nitrogen blend ratios based on beverage temperature, keg pressure, CO2 content, elevation, and existing gas blend. Determine suitable pressure ranges for dispensing draught beverages.

    ★ 4.24 ratingsProductivityFreeData updated 2026-09-10
  3. CMCalc app icon

    CMCalc

    William David

    Calculate decimal, binary, octal, and hexadecimal values

    Perform decimal, binary, octal, and hexadecimal arithmetic. Convert between number systems. Apply binary logic functions. Use parentheses for operator grouping. Input hexadecimal values using A-F keys.

    ★ 4.56 ratingsUtilitiesFreeData updated 2026-09-09
  4. NZ GST Calculator app icon

    NZ GST Calculator

    Callum Mcleod

    Calculate GST, reverse it, and total

    Calculate GST by adding or removing it from amounts. Perform reverse GST calculations automatically. Perform basic arithmetic for total GST across multiple items. Use dark mode for iOS 13. Clear entries with C or AC keys.

    ★ 0.00 ratingsFinance$1.99Data updated 2026-09-08

How we rank alternatives

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