Kaddu gives communities everywhere — associations, cooperatives, savings circles and unions — the tools to decide, save and organize. Ballots are encrypted and tallied on the encrypted data: the organizer only ever sees the result, never the individual choices.
Truly secret, verifiable votes.
Tamper-proof savings circles, with no all-powerful manager.
Sealed-bid tenders — anti-corruption.
Combine figures without exposing them.
Community savings and collective decisions exist on every continent — a vast informal market, largely overlooked. Kaddu speaks their language.
Kaddu was born in Dakar, built first for the savings circles, associations and cooperatives of French-speaking Africa — on any phone, in French, with no bank account. It's our proving ground before the rest of the world.
One encryption engine, eight concrete services for your communities. Kaddu is not just about voting.
Board elections, assembly decisions, internal polls. Each ballot is encrypted; the result is public and verifiable, the votes stay secret.
Use it now →Manage members, rounds and contributions cleanly, with no cheating possible — a tamper-evident ledger (hash chain); the money flows outside the app.
Open →Each bid is sealed at submission. In encrypted mode, losers never reveal their price. Anti-corruption through mathematics.
Open →Anyone posts an idea for the community or for Kaddu. Members vote, the best rise.
Open the idea wall →Discover votes open to the public, take part and exchange with the Kaddu community.
Explore →Combine a group's sensitive data (budgets, figures) to get a total or an average — without anyone exposing their individual numbers.
Open →Compare salaries or prices within a group and know “where I stand”, without anyone seeing the others' figures.
Open →Report corruption or harassment without being alone: an alert only surfaces once several people flag the same target. Below the threshold, it stays invisible.
Open →Everywhere in the world, wherever communities decide and save together, trust is fragile. Kaddu replaces it with a mathematical guarantee — free, on any phone, for everyone.
A question, some choices, and a link + QR code to share with your members on WhatsApp, Telegram, Facebook and more.
The choice is encrypted, then aggregated homomorphically. The organizer only sees the total — never the individual votes.
The total is computed on the encrypted data. No individual answer is revealed.
No. The tally runs on encrypted ballots: the person who created the vote only sees the final result, never the individual choices. For a guarantee where not even the server can read anything, the on-chain (fhEVM) version goes further.
Yes. Kaddu relies on Zama's homomorphic encryption (FHE): it computes on encrypted data without ever decrypting it. Secrecy is guaranteed by mathematics.
For associations, cooperatives, tontines, unions, alumni groups, student councils — anywhere people make decisions together and trust matters.
Yes, it's free. Kaddu is designed to be accessible to every community.
The same Zama encryption technology, in two complementary forms: one accessible to everyone today, one etched onto the blockchain and verifiable by the whole world.
Usable right away, no wallet or crypto needed. Zama's FHE encryption protects every vote server-side. A simple link or QR code is enough — built for associations, tontines and cooperatives.
Open Kaddu for freeThe tamper-proof version: our confidential contracts (fhEVM) run on the Zama Protocol (Sepolia). Sealed bids, payments released by citizens — all publicly verifiable, forever.
View the contracts →Sepolia testnet · Zama Protocol (fhEVM) · deployed 2026-07-28
Free, no account. Create a vote, a savings circle or a tender and invite your community.