Numeris
Scientific calculator — precise, quiet, tracker-free.
A calculator for everyday work, study and engineering. With live LaTeX preview, symbolic derivatives up to the 5th order and 3D surface plots — fully offline, no analytics, no accounts.
Features
What Numeris does — and why.
Every feature is a deliberate choice. Nothing exists to fill space.
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Three modes, one tool
Basic for everyday sums, Scientific for trigonometry, logarithms and factorials, Graphing for 2D curves and 3D surfaces. Each mode is designed in its own right — no modal stutter.
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Live LaTeX preview
Expressions are typeset as you type. Color-coded bracket pairs make nested terms readable and error-free.
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Symbolic derivatives
Automatic derivatives up to the 5th order, simplified. For students who want to check their work — not replace it.
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2D and 3D plots
Unlimited simultaneous 2D functions. 3D surfaces with gesture-based rotation, zoom and pan. Automatic detection of zeros, extrema and periodicity.
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Searchable history
Every calculation stays searchable — locally, on your device. No cloud sync, no accounts, no servers.
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20 languages, accessible
Fully localised, landscape-ready on iPad and Android tablets, OLED-optimised for dark environments, respects Reduce Motion and Dynamic Type.
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No data collection
Numeris talks to no server. No analytics, no third-party crash reports, no ads. Purchases run through Apple or Google — anonymously.
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One-time purchase
Basic and Scientific are free forever. Graphing unlocks through a one-time in-app purchase. No subscription, no recurring fees.
FAQ
Frequently asked.
Is Numeris really fully offline?
Yes. Numeris needs no network connection. All calculations, the full history and all settings are stored exclusively on your device. No data is transmitted to Qorvano° or any third party.
What does Numeris cost?
Basic and Scientific are free forever. The Graphing mode (2D/3D plots, symbolic derivatives) unlocks through a one-time in-app purchase. No subscription, no recurring fees.
Which devices does Numeris run on?
Numeris runs natively on iOS (iPhone and iPad) and Android (phones and tablets). The app is optimised for OLED displays, landscape use and Dynamic Type.
Is my history synced to the cloud?
No. Numeris keeps calculation history strictly local. There is no cloud sync, no account system, no way to back data up off-device. That is deliberate — simplicity and confidentiality come first.
Which permissions do the app stores require?
Numeris requests no permissions beyond the minimum. No location data, no contacts, no camera, no microphone. The in-app purchase is handled entirely by Apple or Google.
Which languages does Numeris support?
Numeris is translated into 20 languages — including German, English, French, Spanish, Italian, Portuguese, Japanese, Korean, Chinese, Russian, Turkish, Arabic, Hindi, Dutch, Polish, Swedish, Danish, Norwegian, Finnish and Ukrainian.
Support
Questions about the app or a purchase?
If something doesn't work or you're missing a feature, write to us. Usually replied within a few business days — personally.