Sigma Notepad Calculator
AutomatediPhone calculator app that reads plain English math expressions with variables, currencies, and units, updating results instantly.
Active plans
2
Total changes
7
Last change
Sep 3, 2026
Price trend
no history
What we know about Sigma Notepad Calculator’s pricing
VolatileChanges in 12 months
7
Cadence
Every 13 days
Direction
Recently restructured
Category position
Cheaper than 97% of Productivity tools (1165 compared)
Current pricing
Free
customFree
- custom$0
- monthly$0/mo($0/forever)
- Full calculator
- Arithmetic
- Percentages
- 60 unit conversions
- Around 170 currencies
- Variables
- Aggregates
- Math functions
- Hex
- 3 saved sheets
- Auto theme
- English and French
- No watermarks
- No time limits
- No ads
Pro
monthly$1.99/mo
- custom$1.99
- custom$14.99
- custom$29.99
Price history
Last 7 changes
$1.99→$1.99(0.0%)
| Date | Plan | Change | Old | New | Δ% |
|---|---|---|---|---|---|
| Sep 3, 2026 | Pro | restructure | $1.99 | $1.99 | — |
| Jun 20, 2026 | Sigma Pro | new plan | — | $1.99 | — |
| Jun 20, 2026 | Free | new plan | — | $0 | — |
| Jun 20, 2026 | Sigma Pro | new plan | — | $1.99 | — |
| Jun 20, 2026 | Free | new plan | — | $0 | — |
| Jun 20, 2026 | Sigma Pro | new plan | — | $1.99 | — |
| Jun 20, 2026 | Free | new plan | — | $0 | — |
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