Femtobytes
Femtobytes

Mathematics that leaves nothing unexplained.And software built the same way.

Solvers that show every step with the reason for it and a picture beside it, free courses that begin from nothing, and websites and applications built to order for schools and businesses.

See what we build

What we build

Every one of these is finished and running today.

Available now

What they all have in common

Every step, and the reason for it

Nothing is skipped because it is obvious, and no line appears without the working that produces it. If a step needs a reason, the reason is given.

Checked before you see it

Every relation in a solution is evaluated with exact arithmetic first. A solution with a false line is refused rather than shown.

Built for the phone you have

Pages arrive finished rather than blank, they carry no tracker and nothing from anyone else’s server, and they open on a slow connection.

Yours, and private

No advertising, no selling of anything about you, and for work we build for you, full ownership of the code, the content and the domain at the end.