Minimal chalkboard calculator with scientific tools and privacy-first design
Experience a minimalist calculator reimagined as a digital chalkboard: Slate: Calculator from Zone7 Studios addresses everyday and advanced calculation needs. It combines basic arithmetic, scientific, percent, date, tip, unit, loan, and GST tools into one interface, and keeps operation offline with no accounts or tracking. Custom skins, tactile sound sets, a history tape, and Google Cast support provide a focused, private tool for students, professionals, and everyday users who value aesthetics and practical calculation features.
Handles both simple sums and precise scientific expressions
Slate focuses on arithmetic and scientific operations, providing trigonometry, logarithms, roots, powers, and factorials for advanced calculations. The tool also includes a unit converter covering length, weight, volume, and temperature, plus a date function for days-between calculations. The interface lets users build stacked expressions without switching apps, so study problems and technical calculations can be composed and evaluated in a single workflow.
Runs locally with a cast workflow suited to collaborative displays
The app performs core work without an internet dependency and supports Google Cast for displaying the slate on an external monitor while the phone remains the input device. The developer frames the design under a calm-technology approach that emphasises privacy and minimal interruption. This arrangement makes the tool suitable for classroom demonstrations or quick group checks where the phone acts as a keypad and the board appears on a larger screen.
Design choices prioritise tactile feedback and visual personalization
Visual skins such as Ledger, Terminal, Porcelain, Ember, Drift, and Blueprint change the calculator's look and ship with matching key sounds like Typewriter or Woodblock. The app emphasises restrained layout and high-quality sound design to reduce distraction. Advanced modules are gated behind a single unlock step that enables tip splitting, loan schedules, GST calculations, and extra converter units, preserving a compact core while offering deeper tools for specialist tasks.
Slate is a privacy-minded, aesthetically tuned calculator with one hardware trade-off
Slate is a refined choice for students, professionals, and anyone who prefers a private, distraction-reduced calculator that covers both simple and advanced needs. One notable trade-off is that full functionality, including casting to external displays, depends on having a modern device. Expect consistent behavior for routine and study tasks, and reliable operation where device compatibility is met.
