OB ToolBox app icon

Apps Like OB ToolBox for iPhone and iPad

by Frederick Blair★ 5.02 ratingsMedicalFreeData updated 2026-09-06

Ranked alternatives

Showing 821–840 of 1,000 ranked alternatives.

  1. EMS Ops app icon

    EMS Ops

    Focus Forward Technology, LLC

    ★ 0.00 ratingsMedicalFreeData updated 2026-09-06
  1. Ocion app icon

    Ocion

    Ocion Water Sciences Inc.

    ★ 0.00 ratingsReferenceFreeData updated 2026-09-06
  2. Date Converter: All Calendars app icon

    Date Converter: All Calendars

    Fahad Alrashidi

    Convert and calculate age

    Convert calendar dates between Islamic, Gregorian, Hebrew, Buddhist, Persian, Japanese, and Chinese formats. Calculate age based on birthdate. Share results as text. Supports dark mode.

    ★ 0.00 ratingsUtilitiesFreeData updated 2026-09-06
  3. SkyUS app icon

    SkyUS

    Mytech Intelligence (Shenzhen) Co., Ltd.

    ★ 0.00 ratingsMedicalFreeData updated 2026-09-06
  4. Electrace Heat Loss Calculator app icon

    Electrace Heat Loss Calculator

    Calvin Baird

    Calculate and determine watt output

    Calculate for trace heating systems using precise formulas. Input pipe dimensions, ambient temperature, and insulation data. Determine required wattage and verify insulation effectiveness. Export results for documentation or sharing.

    ★ 0.00 ratingsBusinessFreeData updated 2026-09-06
  5. Ovulation Calc app icon

    Ovulation Calc

    Kyriakos Leivadas

    Predict fertile days for pregnancy.

    The app helps users predict their most fertile days of the month. It determines the timing of ovulation and peak fertility based on menstrual period variations.

    ★ 1.01 ratingsHealth & FitnessFreeData updated 2026-10-11
  6. PoolCalc app icon

    PoolCalc

    Jacob Bonham

    Calculate pool water scaling potential easily.

    The app calculates pool water scaling potential using the Langelier Saturation Index. Users can save and edit readings, locations, and add notes to each reading.

    ★ 1.01 ratingsUtilitiesFreeData updated 2026-09-28

How we rank alternatives

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