# BitKey: Bitcoin Wallet — A Pure Bitcoin Wallet > Decentralized Bitcoin wallet with user-controlled keys and iCloud backup. (iPhone/iPad app by Hangzhou Surrounding Technology Co. , Ltd..) - Source: https://appshunter.io/ios/app/bitkey-bitcoin-wallet/id898643317 (this page in markdown: same URL + `.md`) - Developer: [Hangzhou Surrounding Technology Co. , Ltd.](https://appshunter.io/developer/1715591561) - Category: Finance, Utilities - Price: Free with in-app purchases - Rating: 4.67/5 from 27 App Store ratings · 10 written reviews indexed - Age rating: 4+ - Requires: iOS 10.3 · 15 MB - Languages: English, Chinese - Released: 2014-12-05 - Data updated: 2026-06-10 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/bitkey-bitcoin-wallet/id898643317/reviews.md ## What is BitKey? Summary: Bitkey is a pure bitcoin wallet, with no account required. You can keep your bitcoin keys within your own control. Using your own iCloud, wallet data can still be retrieved even if the phone lost or app deleted. (Keys lost is a larger risk than coin theft!) Design Principle: 1. Never Lose Data. 2. Encrypt Everything. 3. Decentralized & Anonymous. Features: 1. No account required. 2. You control your keys. 3. Keys lost is a larger risk than coin theft. Bitkey backup data in your own iCloud document. 4. Keep version control of data changes, avoid any data loss. 5. Advanced password enhances solution. (Security questions/answer) 6. Supports configuring your own API. BitKey does not collect any information of your wallet. 7. Provides Multisig-Timelock Address for advanced Bitcoin usage. 8. Explicit HD-Wallet(BIP32, BIP39, BIP44, BIP49). 9. Multi inputs/outputs (UTXO level) Bitcoin transaction build tool. How It Works: #1 Q: How does the Bitkey application work as a cold wallet. A: Bitkey has no app server. All your data(bitcoin address and private keys) is saved locally, and backup in your own iCloud document. And, the data backup in your iCloud document is encrypted by your password. Actually, the raw bitcoin private key just temporary exists in your device memory (RAM). (When you use the key to sign a transaction locally). So with the excellent iOS sandbox isolation mechanisms we can define Bitkey app as a cold wallet. #2 Q: How can I withdraw my funds? A: It's a cold wallet, you just use it to keep your bitcoin keys safe from stolen or lost. The concept “withdraw my funds” usually be used in the context of “hot wallet/website” or “bitcoin market website”. # 3 Q: How can I add money to my account? A: It's a cold wallet, you just can import bitcoin private keys to the app. The concept “added money to the account” usually be used in the context of “hot wallet/website” or “bitcoin market website”. #4 Q: How can I make a transaction/pay? A: Bitkey provide “transaction sign tool”, you can use the tool to sign a transaction locally and then broadcast it to the bitcoin network. Notes: 1. At the first launch of the app, You should allow the app to use your iCloud. 2. At the first time, you launch the app, You should set up your encrypt-password to protect the data. 3. Then every time you launch the app you need to enter the password to decrypt your data. WARNING: Your encrypt password will never be stored on your device or upload to iCloud. It just temporary exists in memory to decrypt data after you enter them. Without the password, there is no way to decrypt your data. So when you set or reset the password you may always provide some appropriate password hint. The password hint will be back up and uploaded to iCloud. Email: bitkey.tech@gmail.com BITKEY PRO_ALL IN-APP PURCHASE INFO: Support our app and subscribe to BitKey Pro_all for $79.99. You will get extra features like watch any addresses and receive email notifications when transaction happen. Review the app's source code. Check the app's workflow. Multisig-Timelock-Address feature. Use BitKey-Multisig-Tool on Mac to cosign your transaction. An advanced user id, and customer service, tech support. Payments will be charged to your iTunes Account at confirmation of purchase. A user can buy once. Purchased item is synced across devices. Purchased item can be Restored. Privacy policy and terms of use: https://bitkey.app/tool/privacypolicy.html ## Key features - User-controlled private keys - Decentralized and anonymous - iCloud backup and recovery - Advanced password security - Configurable API support - Multisig-Timelock Address support - HD-Wallet standards compliance ## Pricing and in-app purchases Base price: Free. **Subscriptions** | Subscription | Price | Period | | --- | --- | --- | | pro | $0.99 | per 3 months | **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | pro_all | $14.99 | one-time | ## Recent user reviews (10 of 10) All indexed reviews: https://appshunter.io/ios/app/bitkey-bitcoin-wallet/id898643317/reviews.md ### 1/5 — Lost My Key *2023-08-24* I didn’t put any money or bitcoin in. I lost my key. Once lost, you cannot get it back and you cannot start a new account. Once this happens the app is useless. ### 5/5 — Meltcox *2022-12-28, version 3.0.5* 101% Recommended by ME.... ### 5/5 — Good wallet-keep. *2020-01-26, version 3.0.5* All-in-all, great app for number-crunching bitcoin crypto-citizens! **Developer response:** Thank you 🤝 ### 5/5 — Awesome! *2019-06-29, version 3.0.5* Easy to use, simple, clean interface and full control over your wallet. That is all I wanted! ### 5/5 — Works just as described! *2019-02-22, version 3.0.3* If you know what you’re doing, this app can be a life saver :) ### 5/5 — I use this Bitcoin wallet! *2018-12-14, version 3.0.2* Simple and clear address list, I can find and view my keys. All the wallet data is encrypted and synced using my iCloud I can see the key pair document . The pure wallet design let me can use this app even there is no internet connection. ### 5/5 — Great App to Encrypt/Save Bitcoin Keys *2018-09-03, version 2.9.7* “Your keys, your bitcoin. Not your keys, not your bitcoin.” Bitkey`s self-storage and data backup solution is very useful. The interface is super simple too and there is no other messy features. I use this app as my usual wallet. ### 1/5 — Total Garbage... user unfriendly *2017-03-09, version 2.2* I tried to use this wallet. I really wanted to like it since it seemed simple. But it's completely useless. 1. After the QR doesn't read properly and parse your left with having to do things manually. 2. They claim to only want .0001 BTC per transaction, but if you try and send balance of wallet to another address and leave the transaction fee.. it won't allow you. So you have no idea what the app or developer is keeping. It's. A complete fail. 3. Once you sign the transaction you the. Must submit it yourself to the network. Really? That's not simple and what are they keeping the fee for. Don't use this app. Even with the last update all the problems still exist. Really unhappy with it. **Developer response:** Every Bitcoin users should have know these fees go to Miner. These fees do NOT go to BitKey. Very Very sad to receive this comment. ### 1/5 — Bad App, No means to contact developer or support , taking people's coins hostage *2017-03-02, version 2.1* I am still trying to withdraw the $3000 I saved in bitkey. After I added money to the account , I have not been able to withdraw it. It just creates incomplete transactions and even though transactions have been canceled at the receiver end it's not canceled at my end and my money is still stuck and even worse is. Now **Developer response:** The app is just a local-private-key-management tool. Unlike other wallet/exchanges , the app maintains the original Bitcoin work-flow explicited. You need to sign the tx with your private key and then broadcast it manually to the bitcoin network. ### 1/5 — Scam!!! *2017-02-02, version 2.1* I installed app, put $$ in now it won't let me withdraw funds....it only lets you add funds app kicks you out if you try and withdraw it kicks you out if you try and scan anything **Developer response:** The app is just a local-private-key-management tool. Unlike other wallet/exchanges , the app maintains the original Bitcoin work-flow explicited. You need to sign the tx with your private key and then broadcast it manually to the bitcoin network. ## Frequently asked questions about BitKey ### How does BitKey work as a cold wallet? BitKey functions as a cold wallet by storing all your data, including Bitcoin addresses and private keys, locally on your device. These are then encrypted and backed up to your personal iCloud. Private keys only exist temporarily in device memory when signing transactions locally. ### Can I withdraw my funds from BitKey? BitKey is designed as a cold wallet for secure key storage, not for direct fund withdrawal like a hot wallet or exchange. The concept of 'withdrawing funds' typically applies to platforms where your keys are managed by a third party. ### How do I add money to my BitKey account? As a cold wallet, BitKey allows you to import existing Bitcoin private keys. The process of 'adding money' is different from hot wallets or exchanges; it involves bringing your own keys into the secure environment of BitKey. ### How can I make a transaction or pay with BitKey? BitKey provides a transaction signing tool. You can use this tool to construct and sign transactions locally on your device. Once signed, you can then broadcast the transaction to the Bitcoin network. ### What security measures does BitKey employ? BitKey prioritizes security with features like user-controlled keys, encrypted data backups to your iCloud, and advanced password protection with security questions. It is designed to be decentralized and anonymous, with no account required. ### What happens if I lose my phone or delete the BitKey app? Your wallet data can be retrieved even if your phone is lost or the app is deleted, thanks to the backup feature in your own iCloud. It is crucial to remember your encrypt-password, as it is not stored on your device or uploaded to iCloud and is necessary to decrypt your data. ### Does BitKey have ads? The provided data does not specify if BitKey contains advertisements. However, it does offer an in-app purchase for 'BitKey Pro_all' which suggests a freemium model. ### What are the extra features in BitKey Pro_all? Subscribing to BitKey Pro_all for $79.99 unlocks additional features such as the ability to watch any addresses and receive email notifications. This subscription offers enhanced functionality beyond the free version. ## Version history (last 1 release) ### 3.0.5 — 2019-06-26 1. Fix bug. 2. Optimized for iOS13. ## Apps similar to BitKey | App | Rating | Price | Category | | --- | --- | --- | --- | | [Bitcoin Address Tracker](https://appshunter.io/ios/app/bitcoin-address-tracker/id1465853490) | 4.0 (5) | Free | Finance | | [PTPWallet - Bitcoin, Ethereum](https://appshunter.io/ios/app/ptpwallet-bitcoin-ethereum/id1428589045) | 4.2 (24) | Free | Finance | | [Pine – Bitcoin Wallet](https://appshunter.io/ios/app/pine-bitcoin-wallet/id1445357961) | 5.0 (3) | Free | Finance | | [Bitcoin Cash Wallet Freewallet](https://appshunter.io/ios/app/bitcoin-cash-wallet-freewallet/id1268542249) | 3.6 (105) | Free | Finance | | [Bitcoin Wallet BitBucks](https://appshunter.io/ios/app/bitcoin-wallet-bitbucks/id1453167599) | 1.0 (1) | Free | Finance | | [BTC Coin Wallet - Freewallet](https://appshunter.io/ios/app/btc-coin-wallet-freewallet/id1126844329) | 3.8 (93) | Free | Finance | ## More apps by Hangzhou Surrounding Technology Co. , Ltd. - [KeepNote App](https://appshunter.io/ios/app/keepnote-app/id1475329739) All apps by Hangzhou Surrounding Technology Co. , Ltd.: https://appshunter.io/developer/1715591561 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-06-10.*