Decoo, Inc. is a digital product company based in Tokyo, Japan, founded in 2009. Its crypto-related product is Saify, positioned as a “safe and secure” crypto asset wallet app that lets users send and receive NFTs and crypto assets at any time, 24/7. The page highlights Saify as Japan’s first crypto asset wallet with a “dress-up” feature, accompanied by its own dress-up NFTs.
Saify is a wallet product, not an exchange. According to the official information, it supports Ethereum, Polygon, Binance, Avalanche, Arbitrum, Optimism, Base, and other chains, covering the mainstream EVM ecosystem and making it suitable for basic NFT and multi-chain asset management. Features include sending and receiving NFTs/crypto assets, a fully Japanese interface, an intuitive user experience, and biometric confirmation for transactions. Note that the page does not disclose specific supported coins, token standards, a DApp browser, cross-chain features, swaps, or trading pairs, so its trading capabilities cannot be assessed.
The app is listed as free and supports iOS 15.6 and above, as well as Android. However, the website does not state whether service fees or built-in transaction fees are charged, nor does it provide details on how on-chain gas fees are displayed. There is no information about KYC. If it is purely a self-custody wallet, KYC is usually not necessarily required, but that cannot be inferred from the available information. On security, the only clearly stated feature is “secure transactions via biometrics.” There is no disclosure on whether seed phrases/private keys are stored locally, whether MPC is used, whether cold wallet protection, insurance, audits, or a bug bounty program exist. Overall, security transparency is relatively limited.
The page only provides a company overview, location, and product introduction. It does not disclose any Japanese financial regulatory license, crypto asset exchange registration, or other compliance qualifications. It also does not mention fiat deposit or withdrawal methods such as bank cards, bank transfers, or convenience store payments. As such, Saify appears more like a lightweight mobile wallet than a trading platform with fiat rails. Derivatives and leverage features are not mentioned, so users should not treat it as a futures or margin trading tool.
Its strengths are clear Japanese localization, a beginner-friendly interface, broad multi-chain coverage, and differentiation through dress-up NFTs. Its weaknesses are insufficient disclosure of key information, especially around fees, private key management, regulatory licensing, and customer support safeguards. It is better suited to Japan-based users, NFT beginners, and mobile users who want to manage multi-chain assets in Japanese. It is not ideal for high-frequency traders, users with strong fiat deposit/withdrawal needs, or those who prioritize institutional-grade security disclosures.
The website does not provide information on availability in mainland China, payment support, or app store access, so this is assessed as “unknown.” Chinese users looking for mature wallet alternatives may compare MetaMask, imToken, TokenPocket, Trust Wallet, and similar options, while carefully verifying download channels, network accessibility, and on-chain gas costs.
⚠ This review is compiled from public sources and does not constitute a purchase recommendation. Verify all facts on the vendor's official site. Verify on decoo.co.jp official site.
decoo.co.jp is an Japan Crypto provider. TG4G tracks its product information, an overall rating of 6.0/10, and a China-accessibility score of Limited (proxy recommended). Click "Visit Official Site" to reach decoo.co.jp directly.