Numdroid: prepara tus clases

NumDroid

In-app purchases

About this app

Numdroid is a whiteboard for preparing and presenting math lessons. It combines text, LaTeX formulas, graphs, shapes, images, and ink on A4-sized sheets, and projects them with step-by-step reveal.

Everything is calculated on the device: equations don't require internet or an account.

WHAT YOU CAN PUT ON THE SHEET
• LaTeX text and equations, with its own keyboard (fractions, roots, integrals, matrices, Greek letters, etc.)
• Cartesian plane: functions, polar functions, parametric functions, relations, inequalities, and tables
• Number line: points, intervals, and unions
• Geometric shapes, images, pencil, and highlighter (also with shape correction)
• Multiple pages, alignment grid, groups, and copying objects from one sheet to another

HOW YOU PRESENT
• Order what appears in each preview (one object or several at once)
• Full-screen playback with laser pointer
• Transform: an object moves or changes size when turning pages (copy, paste, and move)
• Steps fade in smoothly, not abruptly

DESIGNED FOR THE CLASSROOM
Designed for finger-based use on mobile devices: zoom, undo, light or dark backgrounds, and automatic saving. Export a page or the current view as a PNG file whenever you want.

FREE PLAN
Up to 5 documents and 5 pages per document, with full editing and formatting.

NUMDROID PREMIUM (optional, Google Play)
• Unlimited documents and pages
• Vector PDF of the document
• ZIP file with one PNG per page
• Editable .numdroid copy to transfer the project to another device

Cancel anytime from Google Play. Documents live on your phone; no cloud storage or additional registration.

What’s new

Ahora puedes:
- Exportar pdf en el modo free con marca de agua.
- Límite de documentos en free ahora e 15 docs.
- Presentación: Se agregaron enfoques de cámara/zoom a secciones de página como pasos adicionales.