KatKalk

Content rating
Everyone
10+
Downloads
Content rating
Everyone
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About this app

KatKalk is a configurable position calculator designed for fast entry of many individual values.

Unlike a conventional calculator, KatKalk keeps every position visible. This makes calculations easy to follow, check and correct—even during
fast-paced work.

KEY FEATURES

• Add, subtract, multiply, divide and calculate percentages
• Keep every entered position visible
• Add short notes to individual positions
• Save and reopen multiple sessions locally
• Copy or remove the latest position
• Choose from ready-made calculator profiles
• Customize the keypad, screen layout and visible controls
• Export sessions as readable HTML reports
• Print reports directly from a compatible browser
• Export and import KatKalk session files
• Use the calculator without an internet connection
• Follow shared sessions in read-only viewer mode

BUILT FOR PRACTICAL WORK

KatKalk is especially useful when many prices, products or other individual values must be entered quickly while the complete calculation
remains traceable.

Choose a simple layout for everyday calculations or configure the keypad and display to match your own workflow.

LOCAL BY DEFAULT

Calculations, notes and saved sessions remain on your device. KatKalk’s core calculator works fully offline. Optional online features are
clearly separated from local calculation.
Fast position calculator with notes, saved sessions and flexible layouts.
Updated on
Sep 25, 2026

Data safety

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 parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Device or other IDs
  • Data is encrypted in transit
  • Data can’t be deleted

What’s new

What's new in version 2.0.1:
• Change operators for saved items directly in the list.
• Edit individual operators within an item's calculation in its detail view.
• Improved layout for the Classic profile and multiline calculations.
• Undo and redo operator changes.
Content rating
Everyone
Learn more

App support

About the developer
Kilinski Marcin
support@tedmarcin.com
Poland

More by Ted Marcin