# p(x)Card vs E Sentry Systems

The clearest difference is iOS requirement: p(x)Card at 13.0 against E Sentry Systems's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

p(x)Card ships an update monthly, E Sentry Systems every 3 weeks. The most recent releases landed on June 2, 2026 and September 9, 2026 respectively.

## The numbers

| Metric | p(x)Card | E Sentry Systems |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.7 (3 ratings)](https://appshunter.io/ios/app/pxcard/id1664643978/reviews)** | — |
| Number of ratings | **3** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Monthly | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 104 MB | 54 MB |
| Requires iOS | **13.0** | 16.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [FUNCTION X FOUNDATION](https://appshunter.io/developer/1664643980) | [IRISS Inc,](https://appshunter.io/developer/1245323320) |

## What reviewers say

### p(x)Card

[App page](https://appshunter.io/ios/app/pxcard/id1664643978)

Securely store and manage your cryptocurrency and NFTs with this hardware wallet solution. It keeps your private key offline on a card, simplifying crypto payments and asset management. Supports multiple blockchain networks for on-the-go transactions.

**Highlights:** Self-custody hardware wallet, Stores private key offline on a card, Supports multiple blockchain networks, Authorize crypto payments, Manage cryptocurrencies and NFTs, NFC transaction signing

**Features:** macOS Compatibility

**In-app purchases:** none


### E Sentry Systems

[App page](https://appshunter.io/ios/app/e-sentry-systems/id6444192723)

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is p(x)Card free?

p(x)Card is free to download, with no in-app purchases.

### Is E Sentry Systems free?

E Sentry Systems is free to download, with no in-app purchases.

### Do p(x)Card or E Sentry Systems have ads?

Neither p(x)Card nor E Sentry Systems shows ads.

### Which is updated more often, p(x)Card or E Sentry Systems?

p(x)Card ships an update monthly, and E Sentry Systems every 3 weeks. Most recently, p(x)Card was updated on June 2, 2026 and E Sentry Systems on September 9, 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.*