# BTCBitByBit > Family Bitcoin education app. Self-custody Lightning + Liquid + on-chain wallet, Learn-and-Earn courses with sats rewards, family chore management with Bitcoin allowances, and sats-back on subscriptions. iOS, Android, and web. BTCBitByBit (KayGee.Tech Ltd, London) is a Bitcoin education platform built for parents and kids to learn Bitcoin together. Users keep their own private keys — we never custody funds. Standard and Premium subscribers earn 50% of their subscription back in sats every month; the Explorer tier earns sats per lesson via a streak multiplier instead. ## Core pages - [Home](https://www.btcbitbybit.com/): Overview of features, pricing, and download links. - [Sign Up](https://www.btcbitbybit.com/joinus): Create a free account or start a paid subscription. - [Pricing](https://www.btcbitbybit.com/#pricing): Free tier, Explorer (lowest-cost paid tier — daily lesson with streak multiplier), Standard (£10/mo), and Premium (£20/mo). Standard and Premium include monthly Sats-Back; Explorer earns per-lesson sats via a 0.5×–2× streak multiplier. - [Explorer plan](https://www.btcbitbybit.com/explorer): Daily Bitcoin learning subscription. One lesson per day, streak-based earning multiplier, course progress checkpoints every 3 lessons. - [Family Corner](https://www.btcbitbybit.com/family-corner): Premium feature for parents — chore management, kid wallets, learning progress. - [Security](https://www.btcbitbybit.com/#security): Self-custody, Lightning network, end-to-end encryption, biometric auth. - [Blog](https://www.btcbitbybit.com/blog): Bitcoin education articles for families and beginners. - [Support](https://www.btcbitbybit.com/support): Help and contact information. ## Courses Free web topic guides (the full 50+ course catalogue lives in the app): - [All courses](https://www.btcbitbybit.com/courses): Topic hub for the whole family — beginner to advanced, plus kids. - [Bitcoin foundations](https://www.btcbitbybit.com/courses/bitcoin-foundations): What Bitcoin is and how it works. - [Wallets & self-custody](https://www.btcbitbybit.com/courses/wallets-and-self-custody): Hold your own keys safely. - [Scams & safety](https://www.btcbitbybit.com/courses/scams-and-safety): Spot scams and protect your sats. - [Nostr & decentralised social](https://www.btcbitbybit.com/courses/nostr-and-social-media): Own your identity online with an open protocol. - [CBDCs & digital ID](https://www.btcbitbybit.com/courses/cbdcs-and-digital-id): Programmable money and the control questions — even-handed, not scaremongering. - [Staying current](https://www.btcbitbybit.com/courses/following-bitcoin-news): Follow Bitcoin and money without the noise. - [For kids](https://www.btcbitbybit.com/courses/for-kids): Age-appropriate Bitcoin learning for children. - [For parents](https://www.btcbitbybit.com/courses/for-parents): How to teach your kids Bitcoin. ## Apps - [iOS App Store](https://apps.apple.com/us/app/btcbitbybit/id6754315366) - [Google Play Store](https://play.google.com/store/apps/details?id=com.btcbitbybit) ## Frequently asked - **What is BTCBitByBit?** A family Bitcoin education app where parents and kids learn Bitcoin together through interactive courses and earn sats as rewards. Includes a self-custody Lightning wallet, family chore management with Bitcoin allowances, and Learn-and-Earn modules for all ages. - **Who controls the Bitcoin?** Users do. BTCBitByBit uses self-custody wallets powered by the Breez SDK on the Liquid Network. We never hold private keys. - **How do kids earn Bitcoin?** Two routes: completing Learn-and-Earn modules, and completing chores set by parents who fund Bitcoin allowances. All earned sats are spendable. - **Is it free?** Yes — free tier available. Premium family plan (£20/mo) covers up to 5 kids and a second parent. Kids never need their own subscription. - **What is sats-back?** On the Standard and Premium tiers, subscribers receive 50% of their subscription back in sats each month (up to 100% with promo codes). The Explorer tier earns sats per lesson via a streak multiplier rather than sats-back. - **Do kids need KYC?** No. Self-custody Bitcoin education — no ID verification required. ## Brand and contact - Legal entity: KayGee.Tech Ltd, 86-90 Paul Street, London, EC2A 4NE, United Kingdom. - Support: support@btcbitbybit.com - WhatsApp: +44 7708 602036 - X / Twitter: [@BTCBitByBit](https://x.com/BTCBitByBit) - Instagram: [@btcbitbybit](https://www.instagram.com/btcbitbybit/) - Facebook: [BTCBitByBit](https://www.facebook.com/61586655435838/) ## Sitemaps - [Main sitemap](https://www.btcbitbybit.com/sitemap.xml) - [Blog sitemap](https://www.btcbitbybit.com/blog/sitemap.xml)