Scientific calculator
Evaluate structured expressions with trigonometry, logarithms, fractions, roots, variables, and complex values.
Available on the App Store
Ttrufle app 02
Scientific and graphing, in one instrument.
Switch between full-screen Scientific and Graphing modes. Calculate trigonometry, logs, fractions, roots, and complex numbers, then enter functions, draw graphs, and trace coordinates. Core work stays on your device and works offline.
Available on the App Store for iOS. Availability varies by country or region.
- Offline-first core
- English + 한국어
- iPhone portrait
- No ads or account in paid v1
Two calculators, one local workspace.
Use a familiar physical-calculator layout, switch modes without losing your work, and reopen saved calculations later.
Graphing calculator
Enter functions, adjust the window, draw graphs, and trace coordinates and function values.
Data + solvers
Work with lists, matrices, statistics, probability, numeric equations, polynomial roots, and systems.
History + programs
Restore local sessions and run user-authored programs in the on-device interpreter.
Your calculations stay yours.
The paid v1 has no account, advertising, analytics, remote crash reporting, or cloud workspace storage. Copy, share, import, and export happen only when you request them.
Read the complete privacy policyIndependent by design.
This is a study and calculation tool published by Gorae Labs. It uses an original interface and is not official, endorsed, or affiliated with a calculator manufacturer, school, or exam body.