# TYST vs Stack Duo by Cypher Stack

The clearest difference is in-app purchases: Stack Duo by Cypher Stack at none against TYST's 1. Stack Duo by Cypher Stack also leads on ads (none vs shown). TYST's advantage is iOS requirement (13.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. TYST sells 1 in-app purchase, starting at $9.99 per month. Stack Duo by Cypher Stack asks for nothing beyond the download.

TYST ships an update every 4 weeks, Stack Duo by Cypher Stack every 5 weeks. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | TYST | Stack Duo by Cypher Stack |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.3 (7 ratings)](https://appshunter.io/ios/app/stack-duo-by-cypher-stack/id6446602017/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 66.7% of reviews |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 4 weeks** | Every 5 weeks |
| Monetization | — | Free |
| Size | 52 MB | 129 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TYST LLC](https://appshunter.io/developer/1485885491) | [Cypher Stack LLC](https://appshunter.io/developer/1613267900) |

## What reviewers say

### TYST

[App page](https://appshunter.io/ios/app/tyst/id1485885492)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Subscription | $9.99 | per month |


### 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 TYST free?

TYST 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.

### Do TYST or Stack Duo by Cypher Stack have ads?

TYST shows ads; Stack Duo by Cypher Stack does not.

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

TYST ships an update every 4 weeks, and Stack Duo by Cypher Stack every 5 weeks. Most recently, TYST was updated on October 8, 2026 and Stack Duo by Cypher Stack on October 7, 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.*