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Calculess Free - Scientific Calculator for iPad

By Steven Romej

This app is only available on the App Store for iOS devices.


Calculess Free is a calculator for iPad. It can process nested expressions.

See the whole expression as you type it. View your previous calculations and results above the current expression.

The free version includes information about my other apps.

A history view lets you look back over recent calculations.

Tap any previous calculation to substitute it into the current expression.

If you need to send yourself any results you can: easily export anything by email.

A 2nd key flips some buttons over to expose even more functions.

Evaluate complex expressions. Use parentheses liberally. The app will give you hints if you type something incorrect.

Designed to feel similar to a TI-82 or TI-86 calculator.

There is some extra room for more functions. Please contact me with things you'd find most useful.

+ Turn keypress sounds on or off
+ Pick a font you like for the buttons and display
+ Email your calculation tape to yourself
+ Adjust number formatting (scientific vs decimal)
+ Enable display of the number grouping character (1,300.00 vs 1300.00)
+ Built-in functions like avg(), trig functions, pi


Contact me any time at or email

iPad Screenshots

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iPad Screenshot 3
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Customer Reviews

Best calculator with history, but with suggestions

Best calculator app with calculation history, even allowing you to copy/paste paste calculations for entering a new revised line, and allowing emailing of calculation history to yourself.

However, would be better if result was show to right of equation for more compact history, like the "Math Sheet" app, and if could choose to Copy to Clipboard the equation or equation + result or history of all calculations (or select single term and adjust selection range) from long tap context menu, instead of only just tap to insert.

Also, would be better if allowed inline editing and deleting of specific past calculation lines from history.

Actually good !

This app is actually neat and well functioning despite the bad reviews.
The best feature is the "Ans" button which was missing from top calculators in the store.
UI is better compared to many other high rated apps.
App is light weight.

Good but...

This calculator is great for everything except inverse trig functions. They don't give you the correct answers

Calculess Free - Scientific Calculator for iPad
View in iTunes
  • Free
  • Category: Utilities
  • Released:
  • Version: 1.0
  • Size: 0.2 MB
  • Language: English
  • Seller:

Compatibility: Requires iOS 3.2 or later. Compatible with iPad.

Customer Ratings

Current Version: