A text calculator for desktop and mobile
Write the calculation. Keep the reasoning.
Numerus combines the speed of a calculator with the continuity of a notebook. Every expression stays beside its result, ready to review, reuse, and share.
- Local first
- No account
- English and Spanish
- 248 km
- 14 km
- 24.5 MXN
- 434 MXN
Edit any number. The result updates in your browser and is never sent to a server.
Numerus
The figures change. The context remains.
Named variables, comments, and aligned results turn a quick calculation into a decision you can still understand tomorrow.
One surface, several ways to reason
Calculate as you write
Use percentages, constants, functions, and comments in readable lines.
Convert with context
Combine compatible units and request current or historical exchange rates with their source visible.
Continue the reasoning
Name variables, reuse results, and summarize blocks with sum, average, median, minimum, or maximum.
The same language on every device
Start on your phone. Continue on desktop.
.numerus documents are portable across iOS, iPadOS, Android, macOS, Windows, and Linux. The calculation engine is identical on every platform.
- iPhone and iPad
- Android
- macOS
- Windows
- Linux
Private by architecture
Your notebook does not need an account.
Numerus keeps documents locally. It has no ads, analytics, telemetry, or automatic crash reports. The network is only used when you request an exchange rate or check for an update.
Read the privacy policyFrequently asked questions
Before you download
Do I need to create an account?
No. Numerus works without registration and keeps your work locally on your device.
Are my calculations sent to the internet?
No. Calculation happens on your device. If you request a currency conversion, only the currencies and date are requested, never the amount or document.
Can I move pages between devices?
Yes. You can explicitly export and import .numerus documents without depending on an account or proprietary cloud.
Do Desktop and Mobile calculate the same way?
Yes. Every platform uses the same engine and preserves the correspondence between each line and its result.
Where will public releases appear?
The download page will show only verified installers and official store links once they are available.