Decred Wallet for testnet, where the coins are worth nothing.
Get test coins from https://faucet.decred.org/

Features:
- Privacy-preserving Simplified Payment Verification (SPV)
- Hierarchical deterministic keys (BIP0032)
- Built on dcrwallet with gomobile.

Decred Project: https://decred.org/
Code at https://github.com/decred/dcrandroid