# Bitcoin Keeper vs Stack Duo by Cypher Stack

The clearest difference is in-app purchases: Stack Duo by Cypher Stack at none against Bitcoin Keeper's 8. Bitcoin Keeper's advantage is rating (4.5 vs 4.3) and update cadence (every 2 weeks vs every 5 weeks). On price, review sentiment, ads and device support there is nothing between them.

Both are free to download. Bitcoin Keeper sells 8 in-app purchases, starting at $6.99 per month. Stack Duo by Cypher Stack asks for nothing beyond the download.

Bitcoin Keeper holds the better App Store score, 4.5 against 4.3. Both are backed by a comparable volume of ratings — 22 and 7 respectively. Written reviews point the same way: 73% of Bitcoin Keeper's written reviews are positive against 67% of Stack Duo by Cypher Stack's.

Bitcoin Keeper ships an update every 2 weeks, Stack Duo by Cypher Stack every 5 weeks. The most recent releases landed on September 30, 2026 and September 20, 2026 respectively.

## The numbers

| Metric | Bitcoin Keeper | Stack Duo by Cypher Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (22 ratings)](https://appshunter.io/ios/app/bitcoin-keeper/id1545535925/reviews)** | [4.3 (7 ratings)](https://appshunter.io/ios/app/stack-duo-by-cypher-stack/id6446602017/reviews) |
| Number of ratings | **22** | 7 |
| Positive reviews | **73.3% of reviews** | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 5 weeks |
| Monetization | Free with in-app purchases | **Free** |
| Size | 66 MB | 129 MB |
| Requires iOS | 15.1 | **15.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Bithyve](https://appshunter.io/developer/1456352093) | [Cypher Stack LLC](https://appshunter.io/developer/1613267900) |

## What reviewers say

### Bitcoin Keeper

[App page](https://appshunter.io/ios/app/bitcoin-keeper/id1545535925)

A community-run, open-source Bitcoin wallet emphasizing secure self-custody. This application does not offer financial or investment advice, focusing solely on managing your cryptocurrency.

**Highlights:** Open-source Bitcoin wallet, Secure self-custody, Community-run, No financial advice provided

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Hodler Monthly | $6.99 | per month |
| Hodler | $9.99 | per month |
| Diamond Hands Monthly | $24.99 | per month |
| Diamond Hands Monthly | $27.99 | per month |
| Hodler Yearly | $69.99 | per year |
| Hodler Yearly | $99.99 | per year |
| Diamond Hands Yearly | $199.99 | per year |
| Diamond Hands Yearly | $279.00 | per year |


### Stack Duo by Cypher Stack

[App page](https://appshunter.io/ios/app/stack-duo-by-cypher-stack/id6446602017)

A user-friendly, open-source cryptocurrency wallet supporting Bitcoin and Monero. It prioritizes security by keeping private keys on your device and offers features like a custom address book and favorite wallets for efficient management.

**Highlights:** Open source, Bitcoin and Monero support, On-device private key storage, Easy backup and restore, Custom address book, Favorite wallets, Custom Nodes

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bitcoin Keeper free?

Bitcoin Keeper is free to download, with in-app purchases available.

### Is Stack Duo by Cypher Stack free?

Stack Duo by Cypher Stack is free to download, with no in-app purchases.

### Which has better reviews, Bitcoin Keeper or Stack Duo by Cypher Stack?

Bitcoin Keeper is rated higher. Bitcoin Keeper averages 4.5 out of 5 from 22 ratings, while Stack Duo by Cypher Stack averages 4.3 from 7 ratings.

### Do Bitcoin Keeper or Stack Duo by Cypher Stack have ads?

Neither Bitcoin Keeper nor Stack Duo by Cypher Stack shows ads.

### Which is updated more often, Bitcoin Keeper or Stack Duo by Cypher Stack?

Bitcoin Keeper ships an update every 2 weeks, and Stack Duo by Cypher Stack every 5 weeks. Most recently, Bitcoin Keeper was updated on September 30, 2026 and Stack Duo by Cypher Stack on September 20, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*