# Stack Duo by Cypher Stack

> Open source Bitcoin and Monero cryptocurrency wallet with on-device key storage. (iPhone/iPad app by Cypher Stack LLC.)

- Source: https://appshunter.io/ios/app/stack-duo-by-cypher-stack/id6446602017 (this page in markdown: same URL + `.md`)
- Developer: [Cypher Stack LLC](https://appshunter.io/developer/1613267900)
- Category: Finance
- Price: Free
- Rating: 4.30/5 from 7 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 129 MB
- Languages: American English
- Released: 2023-03-29
- Data updated: 2026-06-05
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/stack-duo-by-cypher-stack/id6446602017/reviews.md

## What is Stack Duo by Cypher Stack?

Stack Duo is a fully open source cryptocurrency wallet. It's a stripped down version of Stack Wallet that only has Bitcoin and Monero. With an easy to use user interface and quick and speedy transactions, this wallet is ideal for anyone no matter how much they know about the cryptocurrency space. The app is actively maintained to provide new user friendly features.

Highlights include:

Bitcoin and Monero included
All private keys and seeds stay on device and are never shared.
Easy backup and restore feature to save all the information that's important to you.
Custom address book
Favorite wallets with fast syncing
Custom Nodes.
Open source software.

## Key features

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

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/stack-duo-by-cypher-stack/id6446602017/reviews.md

### 5/5 — Reload

*2025-09-25*

Hangs at the very last moment during connection on iPhone 5s

### 1/5 — Fake wallet

*2025-02-15*

Fake wallet

### 4/5 — Decent bluewallet fork but…

*2024-09-13*

It wont let me create a monero wallet. It lets me create a bitcoin wallet but not monero.

## Frequently asked questions about Stack Duo by Cypher Stack

### What cryptocurrencies does Stack Duo support?

Stack Duo currently supports Bitcoin and Monero. It is a stripped-down version of Stack Wallet, focusing on these two popular cryptocurrencies.

### How secure is Stack Duo?

Stack Duo prioritizes security by ensuring all private keys and seeds remain on the user's device and are never shared. This open-source wallet is actively maintained to provide user-friendly security features.

### Is Stack Duo free to use?

Yes, Stack Duo is completely free to download and use. It does not have any in-app purchases or advertisements, as indicated by its free pricing and lack of ads.

### What devices can I use Stack Duo on?

Stack Duo is available for iOS devices, including iPhone and iPad. It is designed to be compatible with these platforms.

### How often is Stack Duo updated?

The latest version of Stack Duo is 2.4.2, last updated on November 27, 2025. The app is actively maintained to introduce new features and ensure reliability.

### Can I manage multiple wallets with Stack Duo?

Yes, Stack Duo allows you to favorite wallets for fast syncing and includes a custom address book for managing your contacts and addresses efficiently.

### What is the user rating for Stack Duo?

Stack Duo has a strong user rating of 4.3 stars based on 7 ratings. This indicates a generally positive user experience with the application.

### Does Stack Duo offer custom node support?

Yes, Stack Duo includes support for custom nodes, allowing users to connect to their preferred network endpoints for greater control and flexibility.

## Version history (last 5 releases)

### 2.4.2 — 2025-11-27

sign/verify message
replace mobile qr code scanner with older lib that does not use mlkit
basic sign/verify message
bitcoin enable legacy address toggle
mobile app privacy options
mobile app splash screen respects system light/dark modes
monero was changed to maybe alleviate some freezing issues 
electrumx coins addresses generated optimizations 
various other bug fixes

### 2.4.1 — 2025-11-06

Fixed Tor bug that caused app to freeze

### 1.3.0 — 2025-10-24

Bumped Flutter version
Frost fixes
QR code scan feature
Removed unnecessary libs

### 1.2.4 — 2024-12-05

Fix Frost error 
SWB fixes 
Show Monero tx private key option 
Added Monero churn options 
Added ability to set tor/clearnet options for individual nodes 
Paynym temporarily disabled while kinks worked out 
View-only wallets

### 1.2.3 — 2024-10-07

Added XMR coin control
Updated Frost things
Updated to latest Flutter

## Apps similar to Stack Duo by Cypher Stack

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| [Manna Bitcoin Wallet](https://appshunter.io/ios/app/manna-bitcoin-wallet/id6745337602) | 5.0 (8) | Free | Finance |
| [BULL BITCOIN](https://appshunter.io/ios/app/bull-bitcoin/id6743380972) | 4.6 (15) | Free | Finance |

## More apps by Cypher Stack LLC

- [Campfire Firo Wallet](https://appshunter.io/ios/app/campfire-firo-wallet/id1613267898)
- [Stack Wallet by Cypher Stack](https://appshunter.io/ios/app/stack-wallet-by-cypher-stack/id1634811534)
- [Epic Pay](https://appshunter.io/ios/app/epic-pay/id1659521689)

All apps by Cypher Stack LLC: https://appshunter.io/developer/1613267900

## Related topics

[cypher stack llc](https://appshunter.io/ios/topics/cypher-stack-llc) · [xmcosy](https://appshunter.io/ios/topics/xmcosy)

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*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 2026-06-05.*