Support

Support the Synchronotron

This site makes a great deal of knowledge freely available, without registration: the complete Calculation Board, the Library with over a hundred documents, the blog with the daily activations and the 3D scenes of the 441 Matrix. If this work is worth something to you, a donation helps maintain and expand it.

Choose an Amount

Tap an amount: the donation goes into the cart and is paid like any order in the Shop.

Euro and dollar amounts are approximate, based on the European Central Bank reference rate of .

  • Payment by card or Pix (via Mercado Pago) or through PayPal in the Shop’s cart. To complete it, you sign in with your email address; if you do not have an account yet, a free account is created (with the trial period for new accounts, while that offer is active).
  • The donation does not unlock any content in the members’ area—it supports the project as a whole.
  • The cart always contains only one donation; a different amount replaces the previous one.
  • The amounts are in Brazilian reais (R$); your bank converts them into your currency.

The Synchronotron is run by a sole proprietor (MEI), not by a charitable organization. The donation is not deductible from Brazilian income tax, and we do not issue donation receipts.