Echooo Wallet Review 2026: Self-Custody Without Published Audits

Echooo is a self-custodial wallet for Web3 users. Its public descriptions present it as an all-in-one mobile wallet that combines multi-party computation and smart contract wallet features, built on ERC-4337 account abstraction.

The wallet's material highlights multi-signature support, social recovery, low gas fees and multi-chain access, including support for zkSync projects. A 2024 announcement said Neo had partnered with Echooo, with support for the Neo X EVM sidechain to follow once that network's mainnet launched.

The project does not publish a full fee schedule, an audit report or detailed team information in the sources reviewed. Its public profile is therefore mostly self-description and third-party listings, which makes it harder to verify claims about security than a wallet with a published audit history.

Echooo is a wallet, which means it lets a user hold and send crypto and sign transactions on blockchains. What sets it apart in its material is how the account is built. Rather than relying on one private key stored as a seed phrase, it describes using multi-party computation, a method where the signing key is split into parts held in different places, so that signing requires several parts to work together.

Its smart contract wallet is built on ERC-4337, a standard that lets an Ethereum account run custom logic. That is the basis for features such as multi-signature approval and social recovery, where a set of trusted parties can help restore access. The wallet is described as working across several networks, including zkSync-based projects, which are Ethereum layer 2 networks that aim to lower transaction costs while using Ethereum's security.

For a newcomer, the practical difference is that account recovery and approval rules are part of the account itself. Those rules are useful, but they also mean the setup choices a user makes matter more than they would with a simple wallet.

Echooo's material describes its gas fees as low, but the project does not publish a full fee schedule in the sources reviewed. Network gas costs depend on the chain a user transacts on, and any in-app fees for account features would need to be checked in the app itself.

Readers comparing costs should look at the transaction preview in the app before signing, since that shows the network fee for each operation.

Echooo's material says it is built on Ethereum security and describes MPC and smart contract wallet features. Those design choices can reduce single points of failure, but they do not replace an independent audit. The project does not publish a security audit in the sources reviewed, so readers cannot confirm the code has been independently reviewed.

The main risks are operational. Losing access to recovery factors, approving a malicious transaction or connecting to a fake app can all lead to losses that a wallet provider cannot reverse. Smart contract wallets also depend on the underlying contracts and on any relayer or infrastructure the app uses, which are counterparty risks a user should understand.

The project does not publish details on its regulatory status in the sources reviewed. Users should keep recovery information offline, verify the app source independently and check that holding and using crypto is legal where they live. Gambling is not part of this product, and any age limits that apply to crypto use depend on local law.

Echooo suits Web3 users who want a self-custody wallet with recovery and multi-signature options and who are comfortable checking setup details themselves. It is less suited to people who want a fully documented fee schedule or an audited track record before they move significant funds.