Observed arrival · 2026-09-25
Chalculate puts a calculator in your keyboard
An iPhone and iPad keyboard that calculates expressions in a text field and lets you send the expression and result without switching apps.
- For
- iPhone and iPad users doing math in chats
- Worth noticing
- The site says each keypress rebuilds the expression from the text field, so editing elsewhere in it should not throw off the calculation.
Field notes
The page describes a keyboard that evaluates expressions as they are entered, then inserts both the expression and result into the current text field. It says each keypress rebuilds the expression from the field's actual text, allowing edits at different cursor positions, and lists a history panel with tap-to-fill results. The feature list also includes VoiceOver labels, spoken keys, and landscape scientific functions; the site claims preferences and history stay on device.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
One card from the complete issue