Sigma Notepad Calculator
AutomatediPhone calculator app that reads plain English math expressions with variables, currencies, and units, updating results instantly.
Sigma Notepad Calculator has 2 plans: a free plan and paid plans from $1.99/month. We have not recorded a price change.
Sigma Notepad Calculator plans and prices
Free
$0
- custom$0
- monthly$0/mo($0)
- Full calculator
- Arithmetic
- Percentages
- 60 unit conversions
- Around 170 currencies
- Variables
- Aggregates
- Math functions
Show all 15 featuresShow fewer
- 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
- yearly$1.25/mobilled annually ($14.99/yr)
- one-time$29.99 one-time($29.99 lifetime)
- Unlimited sheets
- iCloud sync
- Export PDF
- Export Markdown
- Export plain text
- 5 additional themes
Price history
Last 1 recorded changes
| Date | Plan | Change | Old | New | Δ% |
|---|---|---|---|---|---|
| Sep 3, 2026 | Pro | Reclassified | $1.99 | $1.99 | — |
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