Apps Like RPN-45 HD for iPhone and iPad
Calculate like a scientific calculator
Simulate the HP-45 scientific calculator with photo-realistic visuals and animated keys. Perform all original functions and operations. Access a secret timer for 12-hour or 100-hour intervals. Switch to Super-45 mode for enhanced capabilities.
RPN-45 HD screenshots
Ranked alternatives
Showing 321–340 of 1,000 ranked alternatives.


Equations-X
Riyad Habash
Calculate areas and volumes of polygons
Calculate areas and volumes of various shapes including squares, rectangles, triangles, circles, and ellipses. Input dimensions to get formulas and results. View volume calculations for cubes, cylinders, cones, and spheres.

ALClient - Alist File Manager
Hangzhou Yifu Technology Co., Ltd
Play videos, audio, and documents online
Play videos in various formats with dual speed and orientation options. Stream audio in multiple formats with loop playback. View documents in different formats online. Download and organize files for offline use.


RLM-11CX
Ricardo Lira Matte
Calculate, edit, and store equations
Calculate financial metrics with the -11C+ application. Access account balance features for credit line accounts based on cash transactions and interest rates. Generate loan amortization schedules for single loans.

Calculate Lite
Hannes Sverrisson
Save calculations and continue later
Track calculations with a dedicated today view. Save or email calculation history as PDF. Correct errors using a backspace key.

Talking Scientific Calculator
Adam Croser
Calculate, edit, and track equations
Perform complex calculations with functions and formula support. Use speech to input and receive answers, with full VoiceOver compatibility. Adjust button size and color for better visibility. Access high contrast mode for improved readability.




Timer‰
Tim O's Studios, LLC
Set timers with one tap
Start and stop timers with large, clear buttons. Set countdown intervals and track elapsed time. Display time in bold font for easy reading. Reset and restart timers quickly.


SciCalc82
Paul SALANITRI
Calculate with retro-style precision
A vintage-style scientific calculator with a retro LCD display and realistic key sounds. Perform basic and advanced calculations, use shift functions, and access additional modern features like parentheses and memory storage.

Systems of equations solver
Intemodino Group s.r.o.
Solve linear equations with two variables.
The app solves systems of linear equations with two and three variables. It shows step-by-step solutions and supports various coefficient types, displaying results as decimals and fractions.

Slide Rule
正行 Akamatsu
A mechanical analog computer simulator.
The app simulates a mechanical analog computer used for scientific calculations. It performs multiplication, division, square, cube, square root, and cubic root functions.


StudentLite
Hannes Sverrisson
Calculate scientific functions with ease
Scientific calculator allows users to perform complex calculations with swipe navigation between functions. Access exponents, logs, and sinus functions easily. View all functions on iPad, with additional options in landscape mode.


Calculator
Byte Works, Inc.
Calculates with precision and versatility
The app provides multiple calculators in one. It includes scientific, algebraic, and logic functions with conversion tools for various units and memory registers.

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