# Zilch Solitaire vs OFC Fantasy Optimizer

The clearest difference is in-app purchases: Zilch Solitaire at none against OFC Fantasy Optimizer's 3. Zilch Solitaire also leads on iOS requirement (8.0 vs 15.0). OFC Fantasy Optimizer's advantage is update cadence (every 3 days vs every 4 months). On price, ads and device support there is nothing between them.

Both are free to download. OFC Fantasy Optimizer sells 3 in-app purchases, starting at $2.99 per 7 days. Zilch Solitaire asks for nothing beyond the download.

Zilch Solitaire ships an update every 4 months, OFC Fantasy Optimizer every 3 days. The most recent releases landed on November 6, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Zilch Solitaire | OFC Fantasy Optimizer |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (7 ratings)](https://appshunter.io/ios/app/zilch-solitaire/id1037602387/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 32.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 4 months | **Every 3 days** |
| Monetization | Free with in-app purchases | — |
| Size | 116 MB | 19 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Harden Consulting LLC](https://appshunter.io/developer/366561891) | [KENTA YASUDA](https://appshunter.io/developer/1868585745) |

## What reviewers say

### Zilch Solitaire

[App page](https://appshunter.io/ios/app/zilch-solitaire/id1037602387)

A unique solitaire card game where players combine black and red cards to reach a total of zero. It features a scoring system that syncs across devices and supports multitasking on iPads.

**Highlights:** Combine black and red cards to reach Zilch, Helper cards for strategic play, Jokers remove all cards, Visual feedback for valid moves, High score tracking via Game Center, Cross-device high score syncing, iPad split-screen multitasking support

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

**In-app purchases:** none


### OFC Fantasy Optimizer

[App page](https://appshunter.io/ios/app/ofc-fantasy-optimizer/id6757732173)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| プレミアム (週間) | $2.99 | per 7 days |
| プレミアム (月間) | $5.99 | per month |
| 一生買い切りプラン | $99.99 | one-time |


## Frequently asked questions

### Is Zilch Solitaire free?

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

### Is OFC Fantasy Optimizer free?

OFC Fantasy Optimizer is free to download, with in-app purchases available.

### Do Zilch Solitaire or OFC Fantasy Optimizer have ads?

Both Zilch Solitaire and OFC Fantasy Optimizer show ads.

### Which is updated more often, Zilch Solitaire or OFC Fantasy Optimizer?

Zilch Solitaire ships an update every 4 months, and OFC Fantasy Optimizer every 3 days. Most recently, Zilch Solitaire was updated on November 6, 2026 and OFC Fantasy Optimizer on November 5, 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.*