Apps Like Rectangle Area Calculator for iPhone and iPad
Rectangle Area Calculator screenshots
Ranked alternatives
Showing 501–520 of 1,000 ranked alternatives.


Count (Date Calculator)
JungHoon Noh
Calculate dates and time differences.
The app calculates the difference between dates or adds/subtracts days from a date. Users can determine the number of days until a specific event or anniversary.


3D Plotter
Piet Jonas
Plot 2D functions in 3D.
The app plots graphs of 2-dimensional functions in 3D. Users enter a function formula and the desired plotting range.

ChemWhiz
Anant Jain
Calculate molar mass and convert units.
The app calculates molar mass for chemical formulas and converts between common units. It displays information for elements in the periodic table and offers sharing capabilities.



PGR Calculator
OHP, Inc.
Calculate PGR applications in the field.
The app calculates Plant Growth Regulant (PGR) rates for spray or drench applications. Users enter the desired dose and application area size to determine the amount of solution and product required.






Hydraulic Pressure Calculator
Tan Chia Ling
Calculate force with and diameter
Calculate force using and piston diameter. Input values in multiple units. Display results with up to 16 decimal places. Copy results to other apps. Include formulas for reference. Optimized for efficient use.

Fibonacci Retracement/Extension Calculator
Leo Tso
Calculate Fibonacci retracement and extension levels.
The app calculates Fibonacci retracement and extension levels for market prices. Users can anticipate market price moves and plan future trades based on calculated results.

Chemistry Formula Practice
Carolina Biological Supply
Practice naming compounds and writing formulas.
The app provides practice in naming compounds and writing formulas. Practice categories include ionic and molecular compounds, acids, bases, polyatomic ions, hydrocarbons, and organic functional groups.


Geo Elevation: Contour & Slope
ObjectGraph LLC
Elevation profile of any path.
The app analyzes terrain elevation for any path worldwide. It displays elevation profiles with key data and renders the ground in 3D.

MELD Calculator
Marc Melcher
Liver disease scoring and survival prediction.
The app calculates MELD 3.0, Na-MELD, and Original MELD scores. It provides real-time survival probability predictions based on peer-reviewed hazard models.

How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.