Cypher Box

Content rating
Everyone
100+
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Content rating
Everyone
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About this app

Cypher Box 0.0.8 Self-Custody with Strike and Coinos ⚡

Open-source Bitcoin wallet appropriate for beginners who want to gradually reach advanced self-custody. It features a progressive framework that strikes a balance between; security, fees, and UX. Your progression as a user takes four difficulty levels, reflecting your understanding of Bitcoin and the amount of wealth you are trying secure. The app can be ultra newbie-friendly since it comes with Lightning Network service providers, but as your balance grows, you can transfer your Bitcoin into a more secure environment by creating hot or cold storage vaults.

Note: We do NOT custody your funds.

Level 1: Lightning Account
- Login to your a Strike or Coinos
- Buy/Sell Bitcoin via Strike (if available in your country and you already have an account)
- Send and receive Bitcoin instantly with near-zero fees using the Lightning Network
- Accumulate a measured amount of bitcoin before withdrawing to self-custody
- Assign a threshold for withdrawals to balance Bitcoin Network fees and counter-party risk

Withdraw to your self-custodial Vault 😎

Level 2: Hot Savings Vault (self-custodial)
- Generate a public-private key pair with a 12-word backup
- Deposit and spend sizeable amounts of Bitcoin through the main Bitcoin Network
- Accumulate Bitcoin in a self-sovereign manner
- Consolidate and transfer accumulated coins to your Cold Vault (soon)
- Top-up Checking Account with sizeable amounts of Bitcoin
- Recover Hot Vault

Level 3: Cold Savings Vault
- Connect hardware device (cold wallet) for enhanced security
- Deposit or send large amounts of Bitcoin
- Transfer coins from/to from Hot Vault
- Top-up and withdraw from/to Checking Account directly

Other features:
- Interactive bar display to visualize balance in relation to your thresholds
- Graphical representation of 'Capsules' or coins (UTXOs) that reflect their size (soon)
- Total balance across all checking accounts and vaults

Technical specs:
- LNURL
- SegWit-first
- Bip39
- Watch-only vault
- PSBT
- Private keys never leave your device
Updated on
Mar 29, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
No data shared with third parties
Learn more about how developers declare sharing
This app may collect these data types
Personal info, Photos and videos, and Device or other IDs
Data is encrypted in transit