# Archimedes Calculator — Graphing Calculator Reinvented

> Powerful graphing calculator with formula library and interactive plots. (iPhone/iPad app by Patrick Pijnappel.)

- Source: https://appshunter.io/ios/app/archimedes-calculator/id554534698 (this page in markdown: same URL + `.md`)
- Developer: [Patrick Pijnappel](https://appshunter.io/developer/554534701)
- Category: Education, Productivity
- Price: Free with in-app purchases
- Rating: 4.40/5 from 68 App Store ratings · 128 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 29 MB
- Languages: American English
- Released: 2012-08-30
- Data updated: 2026-07-04
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/archimedes-calculator/id554534698/reviews.md

## What is Archimedes Calculator?

Archimedes is the graphing calculator reinvented for the 21st century. It’s much simpler yet more powerful, made with attention to the tiniest detail.

FORMULA LIBRARY (PRO)
Archimedes is one of the first calculators to feature an inbuilt formula library. It’s as simple as picking a formula and filling in the variables. The answer is calculated automatically, and even units are fully supported.

PLOTTING (PRO)
Intersecting, integrating and finding derivatives should be intuitive and straightforward. Archimedes lets you interact directly with plots and makes it all as easy as dragging your fingers across the screen.

EQUATIONS
Archimedes is backed by a powerful mathematical engine. Equations are solved automatically and can be shown in both exact and numeric form, and even systems of equations are supported.

Developed by Patrick Pijnappel & Niels Andriesse

## Key features

- Inbuilt formula library
- Interactive plotting
- Equation solving
- Exact and numeric solutions
- System of equations support
- Unit support

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Archimedes Pro (Monthly) | $2.99 | per month |
| Archimedes Pro (Yearly) | $17.99 | per year |


## What do users think of Archimedes Calculator?

Overall sentiment: mixed

**Pros**

- 👍 Intuitive design and usability
- 🚀 Fast and responsive performance
- 💡 Powerful calculation capabilities
- ✨ Handles complex equations and algebra
- 📚 Extensive formula library
- 📈 Plotting and graphing features
- ✅ Exact and decimal output options
- 💯 Good for engineers and students
- 🌟 Replaces built-in calculator
- 🎨 Beautiful and elegant UI
- 🆓 Free basic functions
- 🔄 Inline editing and history
- 🧮 Solves for variables

**Cons**

- 💰 Subscription model criticized
- ⏳ Lack of recent updates
- 📉 Some features locked behind paywall
- 🐛 Bugs and glitches reported
- 🤔 Missing some advanced functions
- 🚫 No absolute value function found
- ⚠️ Trigonometric functions reported as broken
- 🔄 App sometimes cleared history unexpectedly
- 🎨 UI can be hard to work with due to button color
- 🤔 No themes available
- ❓ Developer contact issues (email/website)
- 🐌 Slow compared to other calculators
- 📈 Graph tracing issues
- 🧮 Lacks matrix capabilities
- 📊 No support for complex numbers
- 📐 Angle unit setting ignored
- 📝 No work shown for equations
- 📊 Polynomial solver limited to degree 2
- 🧮 No hyperbolic functions

**Commonly reported bugs**

- Buttons become transparent and stop working
- Keys are grey and only one number can be typed
- App keeps asking for Apple ID password
- App crashed or buttons not working on certain iOS versions
- Input and result displayed on top of each other
- Display is incorrect on iPad 3
- Division by zero allowed
- Calculation history disappears after restart

**Most requested features**

- Add widgets to the home screen
- Add Russian language support
- Add themes/customization options
- Easier way to copy results with rounding
- Don't dim previous calculations
- Custom variable letters
- Change 'contradiction' message to 'no solution'
- Color code variables in results
- Factorial button
- Permutations (nPr) and choose (nCr) functions
- Ability to add custom formulas to library
- Matrix features
- Apple Watch app
- Show steps for calculations
- Better instructions/tutorial
- Save own formulas
- Add basic calculus features (differentiating, integrating)
- Direct plotting from calculator section
- Complex number support
- Fractions and roots in simplest form
- More advanced functions (e.g., polar coordinates, independent variables in plotting, summation, integer part, differential equation solver)
- Multilingual version

## Recent user reviews (10 of 128)

All indexed reviews: https://appshunter.io/ios/app/archimedes-calculator/id554534698/reviews.md

### 5/5 — Please don’t stop updating, my grandkids will need this too

*2025-09-28, version 3.3.6*

The design and usability of this app are just perfect. Truly an amazing app! Please keep updating and improving it, you’ve created something that deserves to last.

### 1/5 — I don't recommend

*2025-08-09, version 3.3.6*

It was a one time purchase, now they added subscriptions and it's the old price, but EVERY MONTH FOREVER, and the last update was 4 years ago! I don't recommend!

### 5/5 — The best calculator ever

*2024-09-17, version 3.3.6*

Been using this since couple of years ago and this app has everything needed for calculations

### 5/5 — Wonderful for physics and maths calcs

*2024-01-02, version 3.3.6*

This calculator is formatted so well that it enables me to look at whole calculations and make adjustments on the fly as required.

### 5/5 — Отлично

*2023-12-24, version 3.3.6*

Хороший калькулятор

### 5/5 — Excellent Calculator

*2023-01-01, version 3.3.6*

Easily the best calculator app I’ve found. Makes it so simple to do quick calculations and algebra, especially with the intuitive fractions and variables.

### 5/5 — Great calculator

*2022-10-25, version 3.3.6*

Very powerful. 
Basic calculator function is free. 
For someone who need extra features like unit converter and plotting, the subscription is for them. 
Truly regretted the one-time purchase of the pro version was gone. If it comes back I will go buy it. It’s definitely worth it.

### 4/5 — <3

*2022-10-08, version 3.3.6*

This is truly the best calculator I have seen so far. Thank you!

### 5/5 — Спасибо

*2022-07-18, version 3.3.6*

Лучший калькулятор что я видел

### 5/5 — Makes life easier SERIOUSLY

*2022-04-15*

I really appreciate this app. Love how easy to formulate your calculations and calculate them in ease, that you don't need to do them in separate steps. Apple should consider replacing the built-in calculator app with this one. Thanks a lot developers.

## Frequently asked questions about Archimedes Calculator

### What does Archimedes Calculator do?

Archimedes Calculator is a graphing calculator designed for modern use. It allows users to solve equations, plot functions interactively, and utilize an inbuilt formula library for quick calculations with unit support.

### What are the key features of Archimedes Calculator?

Key features include an inbuilt formula library for easy access to common equations, interactive plotting for visualizing functions, and a powerful engine for solving equations exactly or numerically, including systems of equations.

### How is Archimedes Calculator monetized?

The app offers a freemium model. Core functionalities are available for free, while advanced features like the formula library and plotting capabilities are unlocked through in-app purchases, indicating a freemium monetization strategy.

### What kind of math problems can Archimedes Calculator solve?

This calculator can handle a wide range of mathematical problems, including solving single equations and systems of equations, finding derivatives and integrals through interactive plots, and performing calculations using a comprehensive formula library.

### Is Archimedes Calculator suitable for advanced math courses?

Yes, with its powerful equation solving, interactive graphing, and formula library, Archimedes Calculator is well-suited for advanced math courses in fields like calculus, algebra, and engineering where these functionalities are essential.

## Version history (last 5 releases)

### 3.3.6 — 2021-02-16

Bug fixes and improvements.

### 3.3.5 — 2021-01-31

You can now try Archimedes Pro 1 month for free!

### 3.3.4 — 2021-01-11

Bug fixes and improvements.

### 3.3.3 — 2020-02-09

Bug fixes and improvements.

### 3.3.2 — 2020-01-05

Bug fixes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-07-04.*