Envoy by Foundation vs Stack Duo by Cypher Stack
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Envoy by Foundation
A user-friendly Bitcoin wallet designed for simplicity and robust account management. It offers automatic encrypted backups, allows management of both mobile and hardware wallets, and facilitates seamless Bitcoin purchases and transactions. Enhanced privacy features include optional Tor connectivity and the ability to connect to a personal Bitcoin node.
- Self-custody Bitcoin wallet
- Magic Backups (automatic encrypted backups)
- Manage mobile and hardware wallets
- Seamless Bitcoin purchases
- Zen-like transaction interface
- Optional Tor connectivity
- Connect to own Bitcoin node
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Bitcoin Simplified. Envoy is a simple Bitcoin wallet with powerful account management and privacy features. Use Envoy alongside your Passport hardware wallet for setup, firmware updates, and more. Envoy offers the following features: 1. Magic Backups. Get up and running with self-custody in only 60 seconds with automatic encrypted backups. Seed words optional. 2. Manage your mobile wallet and Passport hardware wallet accounts in the same app. 3. Seamless Bitcoin purchases deposited straight to your mobile wallet or Passport accounts. 4. Send and receive Bitcoin in a zen-like interface. 5. Connect your Passport hardware wallet for setup, firmware updates, and support videos. Use Envoy as your software wallet connected to your Passport. 6. Fully open source and privacy preserving. Envoy optionally connects to the Internet with Tor for maximum privacy. 7. Optionally connect your own Bitcoin node.
Stack Duo by Cypher Stack
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.
- Open source
- Bitcoin and Monero support
- On-device private key storage
- Easy backup and restore
- Custom address book
- Favorite wallets
- Custom Nodes
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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.
Screenshots
Verdict
The clearest difference is rating: Envoy by Foundation at 4.6 against Stack Duo by Cypher Stack's 4.3. Envoy by Foundation also leads on update cadence (every 8 days vs every 5 weeks) and review sentiment (81% vs 67%). Stack Duo by Cypher Stack's advantage is device support (3 vs 1) and iOS requirement (15.0 vs 18.0). On price, ads, in-app purchases and monetization model there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Envoy by Foundation holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 30 and 7 respectively. Written reviews point the same way: 81% of Envoy by Foundation's written reviews are positive against 67% of Stack Duo by Cypher Stack's.
Envoy by Foundation ships an update every 8 days, Stack Duo by Cypher Stack every 5 weeks. The most recent releases landed on September 23, 2026 and June 5, 2026 respectively.
| Parameter | Envoy by Foundation | Stack Duo by Cypher Stack |
|---|---|---|
| Price | Free | Free |
| Rating | 4.6 (30 ratings) — better | 4.3 (7 ratings) |
| Positive reviews | 81.3% of reviews — better | 66.7% of reviews |
| Number of ratings | 30 — better | 7 |
| Update frequency | Every 8 days — better | Every 5 weeks |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad, iPod — better |
| Requires iOS | 18.0 | 15.0 — better |
| Further details — not scored | ||
| Size | 150 MB | 129 MB |
| Age rating | 4+ | 4+ |
| Developer | Foundation Devices, Inc. | Cypher Stack LLC |
Customer experience
Envoy by Foundation
Stack Duo by Cypher Stack
In-app purchases
Envoy by Foundation
No in-app purchases
Stack Duo by Cypher Stack
No in-app purchases
Questions
Is Envoy by Foundation free?
Is Stack Duo by Cypher Stack free?
Which has better reviews, Envoy by Foundation or Stack Duo by Cypher Stack?
Do Envoy by Foundation or Stack Duo by Cypher Stack have ads?
Which is updated more often, Envoy by Foundation or Stack Duo by Cypher Stack?
Other comparisons
