
Mathway
8.2#1 in math solver appsFrom $39.99 a yearFree planAndroidiOSWebExtension
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Mathway suits students, parents, and teachers looking for help across a broad range of math and science subjects. Photo input may be useful for problems already written or printed on a page.
Xcas may suit students, educators, and others who need symbolic math, graphing, geometry, statistics, or programming in one interface. Its offline browser option may be useful when installation or internet access is not available.