Solve - Graphing Calculator

Solve - Graphing Calculator

A colorful graphing calculator

192 ratings
109 reviews
$1.99

Details

  • Released
  • Updated
  • December 11, 2008
  • January 21, 2025

Features

Solve - Graphing Calculator video #1 for iPhone
Solve - Graphing Calculator screenshot #2 for iPhone
Solve - Graphing Calculator screenshot #3 for iPhone
Solve - Graphing Calculator screenshot #4 for iPhone
Solve - Graphing Calculator screenshot #5 for iPhone
Solve - Graphing Calculator screenshot #6 for iPhone
Solve - Graphing Calculator screenshot #7 for iPhone
Solve - Graphing Calculator screenshot #8 for iPhone
Solve - Graphing Calculator screenshot #9 for iPhone
iphone
ipad
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About

This app offers a powerful graphing calculator with multiple functions. It solves expressions as you type and features an innovative memory system to store and recall answers. Easily plot 2D, 3D, polar, and time-based graphs with intuitive controls.

Solves expressions as you type
Innovative memory system
Four distinct calculator tabs
2D and 3D function plotting
Polar and time graphing
Plot multiple functions simultaneously
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What users say

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What's New in Solve

5.4

January 21, 2025

Compatible with iOS 18.

User reviews

Love it, but

I’ve used this calculator for years and I love it, but please update it for iOS 26, just make it easier to swipe in and out of like others have asked for, don’t worry about changing anything else! Do that and give me an option to tip. I would gladly pay for this app again after all these years!

Annoying requires two swipes to exit

This is my preferred calculator for iOS because it’s very convenient to have have multiple calculator pages with values that you can store and use later. Unfortunately it has a very frustrating quirk where you have to swipe up from the bottom of the screen twice to exit the app or switch between apps. This makes the app unusable when I need to do some quick calculations while switching back and forth from another app. The only other apps I have seen this happen with are games where you might accidentally swipe up near the bottom of the screen by accident, but I don’t think that is an issue for a calculator, so I’m not sure why it happens here.
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No Ads - Side by Side Calcs

Simple, no nonsense calculation! Love it!

Almost perfect

my only gripe is that it hides the home indicator, which makes leaving the app two swipes instead of one. Please set prefersHomeIndicatorAutoHidden to false

It’s like a Christmas gift

I’m so glad that the dev updated the app and get it back to the App Store. I never expected that they ever update the app again. Moreover, they finally fixed the annoying glitch when page switch while swiping to another app. The best calculator ever. Thanks and keep it up. Don’t abandon the app again 👆🤝
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Developer apps

User experience

🐞

Reported Bugs

9 issues

Swipe up from bottom requires two swipes to exit app or switch apps

Bug

Home indicator hidden causes navigation issues

Bug

Floating-point arithmetic errors in decimal calculations

Bug

Inverse trigonometric functions (cos⁻¹, sin⁻¹) calculate in reverse

Bug

Graph plotting errors (e.g., sqrt(5²-x²) shows incomplete circle)

Bug

Y-axis scale settings ignored in graphs

Bug

Page swiping interferes with app-switching gestures

Bug

Occasional decimal accuracy issues with multiple operations

Bug

Graph of sin(x)e(-x) doesn't reach zero as expected

Bug

Requested Features

16 requests

Fix swipe-to-exit gesture conflict with iOS

Feature

Add percent button for quick percentage calculations

Feature

Implement undo/redo functionality

Feature

Add calculation history storage and management

Feature

Support for independent X/Y axis scaling

Feature

Include derivative and integral calculations

Feature

Add more color/theme customization options

Feature

Implement trace feature for graphs with intersection detection

Feature

Support for polar coordinate 'r' variable

Feature

Add floor and ceil functions to UI

Feature

Tip/donation option for users

Feature

Larger buttons for easier use

Feature

Ability to interact with graphs (trace, zoom)

Feature

Support for cubed roots and other root functions

Feature

Spanish language localization

Feature

Gradient function for calculus

Feature

FAQ

What does the Solve graphing calculator do?

This app functions as a versatile graphing calculator. It solves mathematical expressions in real-time as you type them and includes a unique memory system for storing and recalling answers. It also allows for the plotting of various types of graphs, including 2D, 3D, polar, and time-based functions.

What are the key graphing features?

The app supports plotting 2D functions using the 'x' variable, polar equations with the 'θ' variable, and 3D functions with 'x' and 'y' variables. You can also plot multiple functions by separating them with commas and create animated or time plots using the 'T' variable.

Is this app free to use?

Yes, the application is available for free. There are no in-app purchases or advertisements mentioned, making it a completely free tool for users.

How does the memory system work?

The calculator features an innovative memory system. When you get an answer, you can simply touch it to store it. Later, you can touch a stored answer to easily use it within a new expression, streamlining complex calculations.

What are the benefits of the multiple calculator tabs?

The app provides four distinct calculator tabs, each with its own color. This allows you to perform different types of calculations, such as multiplication, tip calculation, or finding square roots, without clearing previous results. You can also use results from one calculator tab in another, enhancing workflow.