🧮 A calm, minimal popup calculator for Firefox. Dual themes (Blue / Beige), fast keyboard input, clear instant errors (∞ for divide‑by‑zero), and a tidy history you can tap to reuse. No clutter. No tracking. Just calculate.
✨ Clean typography & spacing
🔒 Safe custom parser (no eval, no network)
⚡ Keyboard friendly
🎨 Two quiet themes (persistent)
♻️ Tap history entry to reuse it
📋 Copy result with one click
0️⃣ Local-only storage (expression, result, history, theme)
- Basic arithmetic + parentheses + unary minus
- Percent shorthand:
50%→0.5(works inline) - Clear error flashes (Syntax, Mismatch (), ∞, etc.)
- History (reuse by clicking) + result copy button
No analytics. No remote calls. Nothing leaves your browser.
GitHub: https://github.com/ajaygtm/cleancalc
MIT