TreeCalc
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About this app
TreeCalc evaluates the expression you type, then shows how that expression is built.
Type numbers, parentheses, and operators as usual. Press equals to get the result. Swipe left or right from the calculator — or from the tree screen — to switch views. Either direction opens the other screen.
The expression tree is expandable and collapsible. Operator nodes use clear arithmetic icons. Postfix (Reverse Polish) notation is listed above the tree so you can follow the same evaluation order the engine uses.
Numerical systems 2, 8, 10, and 16 are supported. Decimal mode includes scientific functions. Binary, octal, and hexadecimal work with whole numbers, including bitwise operations.
Light, dark, and auto themes are available. Auto follows day and night (light from 06:00 to 18:00). The interface language follows the phone locale (English and Hungarian).
TreeCalc is an educational calculator. The expression tree is shown for demonstration purposes.
Author: László Kővári, 2005 – 2026
Contact: laszlo.kovary@gmail.com
Type numbers, parentheses, and operators as usual. Press equals to get the result. Swipe left or right from the calculator — or from the tree screen — to switch views. Either direction opens the other screen.
The expression tree is expandable and collapsible. Operator nodes use clear arithmetic icons. Postfix (Reverse Polish) notation is listed above the tree so you can follow the same evaluation order the engine uses.
Numerical systems 2, 8, 10, and 16 are supported. Decimal mode includes scientific functions. Binary, octal, and hexadecimal work with whole numbers, including bitwise operations.
Light, dark, and auto themes are available. Auto follows day and night (light from 06:00 to 18:00). The interface language follows the phone locale (English and Hungarian).
TreeCalc is an educational calculator. The expression tree is shown for demonstration purposes.
Author: László Kővári, 2005 – 2026
Contact: laszlo.kovary@gmail.com
Infix calculator that shows postfix notation and an expression tree.
Updated on
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
- No data shared with third partiesLearn more about how developers declare sharing
- No data collectedLearn more about how developers declare collection
What’s new
What's new in 1.1.0
• Degrees and radians — tap Deg/Rad so sine, cosine, and tangent use the unit you need (sin(90) = 1 in degrees)
• Follow the evaluation on the tree — after =, tap a postfix token to jump to that step
• Clearer keypad, numerical-system display, and expression tree
• Privacy policy on the About screen
• Degrees and radians — tap Deg/Rad so sine, cosine, and tangent use the unit you need (sin(90) = 1 in degrees)
• Follow the evaluation on the tree — after =, tap a postfix token to jump to that step
• Clearer keypad, numerical-system display, and expression tree
• Privacy policy on the About screen
Everyone
Learn moreApp support
phone
Phone number
+36703214433
About the developer
Kővári László
laszlo.kovary@gmail.com
Hungary
