# cardinal. vs SYSCALL

The clearest difference is price: cardinal. at Free against SYSCALL's $7.99. cardinal. also leads on rating (4.9 vs 4.0) and ratings volume (14 vs 1). On ads, in-app purchases and device support there is nothing between them.

cardinal. is free to download; SYSCALL costs $7.99 up front. Neither carries in-app purchases, so what you see is what you pay.

cardinal. holds the better App Store score, 4.9 against 4.0. That said, the two scores are not equally well evidenced: cardinal. has 14 ratings behind it against 1, so its average is the more settled of the two.

cardinal. ships an update every 3 days, SYSCALL weekly. The most recent releases landed on September 30, 2026 and September 28, 2026 respectively.

## The numbers

| Metric | cardinal. | SYSCALL |
| --- | --- | --- |
| Price | **Free** | $7.99 |
| Rating | **[4.9 (14 ratings)](https://appshunter.io/ios/app/cardinal/id1589334930/reviews)** | [4.0 (1 ratings)](https://appshunter.io/ios/app/syscall-mobile/id6781701372/reviews) |
| Number of ratings | **14** | 1 |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 days** | Weekly |
| Monetization | **Free** | Paid |
| Size | 99 MB | 17 MB |
| Requires iOS | **11.0** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Perfect Hat Games LLC](https://appshunter.io/developer/1124547329) | [Chilling Moose](https://appshunter.io/developer/1595484986) |

## What reviewers say

### cardinal.

[App page](https://appshunter.io/ios/app/cardinal/id1589334930)

Engage in a minimalistic logic puzzle game where you deduce a secret solution using sixteen cards and clues. Enjoy procedurally generated boards for endless play and compete globally in daily challenges.

**Highlights:** Minimalistic logic puzzles, Deduce secret solutions, Procedurally generated boards, Endless regular mode, Daily global competitions, 16 logic cards

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

**In-app purchases:** none


### SYSCALL

[App page](https://appshunter.io/ios/app/syscall-mobile/id6781701372)

Engage in a unique reverse-engineering and assembly optimization puzzle game set within a 1990s warez BBS. Write and debug assembly programs to crack software, patch code, and navigate a virtual network. Explore a private board with tools and community features.

**Highlights:** Reverse-engineering assembly puzzles, Code tracing and patching, Network hacking challenges, Virtual BBS environment, Assembly pixel art tool, Chip-tune maker

**Features:** Game Controller support

**In-app purchases:** none


## Frequently asked questions

### Is cardinal. free?

cardinal. is free to download, with no in-app purchases.

### Is SYSCALL free?

SYSCALL costs $7.99, with no in-app purchases.

### Which has better reviews, cardinal. or SYSCALL?

cardinal. is rated higher. cardinal. averages 4.9 out of 5 from 14 ratings, while SYSCALL averages 4.0 from 1 ratings.

### Do cardinal. or SYSCALL have ads?

Neither cardinal. nor SYSCALL shows ads.

### Which is updated more often, cardinal. or SYSCALL?

cardinal. ships an update every 3 days, and SYSCALL weekly. Most recently, cardinal. was updated on September 30, 2026 and SYSCALL on September 28, 2026.

---

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