Melbo

Melbo is a prediction-market app founded in 2026 for trading on real-world events, including politics, sports and esports, cryptocurrency, economic questions, and technology. Its markets use Yes/No outcomes, with share prices representing the market-implied probability of an outcome. ^[1]

Market Operation

Each market presents a question with “Yes” and “No” outcomes. A share priced at 63¢ represents a 63% market-implied probability; shares for the outcome that occurs settle at $1, while shares for the other outcome settle at $0.

Users can hold positions until settlement or sell shares at the current market price beforehand. Melbo says markets operate 24 hours a day and describes trading as peer-to-peer, against other users rather than the platform.^[1]​^[2]​^[3]​

Accounts and Wallets

Melbo is designed for users new to on-chain markets. Users can register by email or Telegram, and the company profile also lists Google sign-in. The platform creates an account-linked, non-custodial wallet at registration and says the wallet belongs to the user and can be exported. Melbo says account setup does not require a browser extension, seed phrase, network selection, or bridge.^[1]​^[2]​^[3]​

Accounts are funded with USDC on Polygon, and balances are displayed in dollars. Melbo does not support fiat, covers network gas costs, and permits trades starting at $1. Its interface is available in 18 languages, and the company lists 24/7 live-chat support.^[1]​^[2]​^[3]​

The platform describes its wallet system as non-custodial: it says funds remain at the user’s address and that Melbo cannot freeze or control the balance. It also says private keys are split into parts and are never assembled in full on its servers, and that passwords and keys are not stored in plaintext.

According to Melbo, withdrawals are confirmed by the network, free funds can be withdrawn at any time, and funds remain accessible through the user’s wallet even if the platform ceases to exist. Positions can be withdrawn after being sold.^[3]​

Settlement and Fees

Trades settle through smart contracts of a third-party decentralized liquidity protocol on Polygon. Melbo says market wording and data sources are published in advance, and a decentralized oracle resolves each market according to those rules. The platform says the rules are locked in the contract and cannot be changed afterward. It also states that settlement and fund movements, including fees, occur through smart contracts and are visible on a blockchain explorer.^[1]​^[2]​^[3]​

Melbo charges a 1% fee plus a liquidity fee on market orders. It lists limit orders, deposits, and withdrawals as free, and says it has no withdrawal limits.^[1]​^[2]​^[3]​