errProof vs GeoGebra
A side-by-side look at errProof and GeoGebra. For an in-depth review of either product, follow the links below.
errProof
Office & Productivity
errProof is a data validation and error prevention tool for Microsoft Excel. It helps ensure accurate data entry by defining validation rules, conditional formatting, input masks, and drop downs.
data-validationerror-preventionexcel-addin
GeoGebra
Education & Reference
GeoGebra is free and open-source dynamic mathematics software for all levels of education. It combines geometry, algebra, spreadsheets, graphing, statistics and calculus in one easy-to-use package. It can be used to teach math from elementary through university level.
geometryalgebraspreadsheetsgraphingstatisticscalculusmatheducation
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