Julian Clock
Adam Allard
Utilities
It's as simple as it gets.
$0.99
Finding alternatives to
Top 20 Alternatives
Curated apps similar to KC-135 Duty Day Calc, ranked by relevance and user ratings.
Ducker Detective
Calculate age from birthdate
Ducker Detective, LLC
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Calculate ages using birth month and day. Determine if someone is lying about their age. Predict a baby’s birth date based on the mother’s last menstrual period. Share results via text or social media.
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CaIculator
Calculate, convert, and solve equations
Edison Largo
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Calculator allows users to perform basic and advanced mathematical operations. Input and display numbers with large, clear buttons. Correct entries using a backspace key. Support decimal points and parentheses for complex calculations.
Free
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#4 
EMS Platoon Shift Calendar
Lato Productions, LLC
Utilities- Updates and fixes will be more frequent in the coming months - Easily select your platoon (red days are days off) and add mutuals and off.
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#5 
Panda Waste
STARRUS ECO HOLDINGS LIMITED
UtilitiesNever miss a bin collection with Notifications the night before your collection day. Pay an invoice and manage your account. Check your bin weight history. Keep up to date with your Panda Account with account notifications. Go E, Save a Tree!
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#6 
Ordinary Calculator
Calculate, edit, and track expressions
奇锴 舒
UtilitiesPerform basic arithmetic operations including addition, subtraction, multiplication, and division. View calculation history. Edit previous entries. Use free, real-time display for accurate results.
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#7 
Days between Dates
Calculate
William Jockusch
UtilitiesCalculate the number of two by selecting them with dials. Also compute weeks+, months+, or years+months+. Track date differences and view formatted results.
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#8 
Capacity Tracker Tally Counter
Track counts, totals, manage numbers
1AM STUDIOS LLC
UtilitiesCreate and customize multiple counters for tracking attendance, inventory, or game scores. Add, remove, or reset numbers manually or with tap gestures. Export data as text or share directly. Set up alerts for specific counts. Sync across devices.
Free -
#9 
AC Calculator Lite
Calculate BTU, convert units, compare systems, estimate
Melchisedec Martinez Rodriguez
UtilitiesCalculate BTU/h capacity and determine recommended equipment types. Convert between BTU, kW, Kcal, and Tons. Check current price estimates and compare inverter versus conventional energy consumption. Unlock advanced features through in- purchases.
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#10 
Electrical Calculator Plus
Calculate voltage, current, and power
Calc Hub, LLC
UtilitiesCalculate properties using Ohm's Law, current, power, voltage, resistance, and horsepower formulas for DC and AC circuits. Convert units between volts, amps, watts, and ohms. Determine power factor and RMS voltage. Estimate voltage drop in systems.
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#11 
Lich Cong Giao
View Catholic calendar and feast days
Bao Lan Le Quang
UtilitiesView Catholic calendar for current and any specific date. Automatically calculate feast days according to Catholic liturgical calendar. Search Bible passages by content or origin. Search Vatican II documents by content or origin.
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#12 
Flight Time Calculator
Hermann Hoelter
UtilitiesAdd up your flight times
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#13 
Prayer Times & Ramadan 2026
APPLIXUS YAZILIM VE DANISMANLIK TICARET ANONIM SIRKETI
UtilitiesA practical mobile application that will help you spend the month of Ramadan in the most productive way. It meets your needs regarding prayer times, sahur and iftar times. Main Features: - Prayer Times: Get easy access to daily prayer times.
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#14 
Shabbat Shalom - שבת שלום
RustyBrick, Inc.
UtilitiesThe Shabbat application will allow you to quickly check the candle lighting times, havdalah times and parsha for the week in any location in the world. This comes in handy when you quickly want to know when Shabbos is or if you want to know if it is too late to call your in-laws in Israel.
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#15 
A Complex Calc
Calculate, edit, and track numbers
Antonio Ruffolo
UtilitiesA calculator with Basic and Scientific modes supports numbers and trigonometric functions. Perform quick calculations, access advanced operations, and view computation history. Generate random numbers with uniform distribution.
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#16 
egasosa
Reserve combustível e pague menos
AGIX TECNOLOGIA LTDA
UtilitiesBook fuel prices from Shell, Ipiranga, Petrobras, or private stations. Reserve prices with up to 2-day discounts. Scan QR code at the station to pay reserved rate. Track savings and receive notifications when stations become available in your city.
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#17 
Counter Calculator: Clicker
Daniel Connell
UtilitiesNeed a counter / tally app that also lets you do those difficult calculations? Counter Calculator is the app for you! - Count up or down in increments of 1, 10 or 100 with a single tap - Do difficult calculations with the in-built calculator Download now to simplify all your counting!
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#18 
ReCalc+
EIICHI KOMINE
UtilitiesIt is a calculator app that can recalculate later . It calculates one line at a time as calculation by writing .
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#19 
next.calc: a modern calculator
Calculate, theme, and track numbers
Josh Angelsberg
UtilitiesCalculate mathematical expressions with infix notation, view full equations as they are typed. Customize themes to match personal style. Access via lock screen widgets. Use one-handed keyboard for larger devices.
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#20 
The Ultimate Counter
Count down to events and track time
Sun Apps, LLC
UtilitiesCountdowns let users track time until or since an event with custom backgrounds and finish notifications. Tallies allow creating unlimited counters for tasks or items. Both features support customization and real-time updates.
Free
App information from Apple App Store. KC-135 Duty Day Calc and related trademarks belong to John Robbins.