Bitcoin address watcher for iOS
Ocular is a Bitcoin address watcher for iOS. Easily check the balance of your bitcoin wallet without the need for private keys. Therefore it is a nice (and secure) companion app for a paper wallet, Ledger Nano S, or TREZOR. Android version is coming soon.
Google for Ethereum Blockchain
Trivial is an Ethereum Blockchain explorer.
Explore on-chain data on multiple cryptoassets ⛓
TokenAnalyst is a simple tool that allows you to explore on-chain data on a variety of cryptoassets. We parse raw data from every block on the Ethereum blockchain and turn it into meaningful metrics that you can use to drive your research and investment decisions. We have a site that gets updated daily and an API where you can get real-time data.