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One tradition, many names.

Njangi, tontine, susu, chama, stokvel — the same practice, wherever it is found. How it works, where it comes from, and how to run one where nobody has to hold the money.

$54 billion
Remittances sent to Sub-Saharan Africa
World Bank Migration and Development Brief 40, 2023
7.9%
Average cost of sending $200 to Sub-Saharan Africa
World Bank Migration and Development Brief 40, 2023
19% of adults
Adults in Sub-Saharan Africa who had used a community savings group — 48% of those who saved at all
World Bank Global Findex, 2011
Self-custodied
No operator function can move member funds — the contract has no admin path to a circle's balance

Educational Articles

Start with the fundamentals and work through the regional variations — how these circles work, and what changes when the rules cannot be quietly rewritten.

One tradition, many names

The same rotating savings circle runs on every inhabited continent under a different name. Each entry covers where it comes from, how the turn order gets decided, and what makes that version distinct.

Topics Covered

How these circles work, where they come from, and what makes one safer to run.

Traditional Systems

  • Historical origins and cultural significance
  • How rotating savings circles work
  • Regional variations worldwide
  • Common challenges and limitations

What Makes One Safer

  • Nobody holds the pot — not even us
  • Every contribution visible to every member
  • Members vote on stopping a circle
  • No seed phrase to write down

Funding Through Your Exchange

  • Withdraw USDC to your wallet over the Sui network
  • Cash out the same way: send to your exchange, then sell
  • Set amounts in USD, EUR, XAF, NGN, KES…
  • No cash ever passes through the app

Ready to Apply What You’ve Learned?

Run the circle your family already trusts — with a pot that nobody, including us, can move, and a record every member can check for themselves.