Superzenic
01
Arithmetic you can follow
- Exact integer and rational arithmetic
- Scientific notation and expression precedence
- Basic units and opt-in complex arithmetic
CalcZen
Room to think. Numbers that add up.
A quiet, keyboard-friendly calculator with exact arithmetic, a visible tape, and room for everyday and technical work.
02
Keep your train of thought
- Visible calculation tape
- Keyboard-friendly input and stable keypad
- Collapsible desktop panes
03
A tool that fits your day
- Light and dark themes
- Command-line mode, pipes and REPL
- 14-day Pro trial with a Free fallback
See CalcZen in use
Silent product demonstration using synthetic data.
Clear conditions
USD 10.00 once
Try full features for 14 days. No payment card required.
License
USD 10.00 once
One installation per platform · future updates included
All versions.
Choose one-timeSales open after launch checks. First paid purchase: 14-day refund window from your first device activation (at most 30 days after payment). Mandatory rights remain unaffected.
The details, in the open.
Trial and access
One active installation per platform; one Linux distribution at a time.
Pricing and rights
Personal and commercial use have the same rights. Future updates are included while the business operates.
Updates and use
Paid features require an online validation at least every seven days. Free features remain available after paid access expires.
Connectivity and availability
Desktop sales launch first. Mobile entitlement support is being prepared; mobile-store availability is not announced.
Expressions and workflow
Exact arbitrary-size integers and rational numbers, scientific notation, explicit multiplication and expression precedence. Structured recovery errors help you correct input. Use the desktop calculator or the command-line one-shot, piped-input and REPL workflows.
Keyboard and layout
Copy results, recall or clear memory, add or subtract from memory, switch Basic/Scientific/Line modes, and toggle History and tools with keyboard shortcuts. Desktop panes collapse independently; the interface supports light/dark themes and reduced motion.