# Double Canfield Solitaire vs Online Zoo Builder

The clearest difference is rating: Online Zoo Builder at 3.0 against Double Canfield Solitaire's 2.3. Double Canfield Solitaire's advantage is in-app purchases (none vs 1) and review sentiment (33% vs 0%). On price, ratings volume, update cadence and ads there is nothing between them.

Both are free to download. Online Zoo Builder sells 1 one-off in-app purchase. Double Canfield Solitaire asks for nothing beyond the download.

Online Zoo Builder holds the better App Store score, 3.0 against 2.3. Both are backed by a comparable volume of ratings — 3 and 2 respectively. Written reviews complicate that: 33% of Double Canfield Solitaire's written reviews are positive against 0% of Online Zoo Builder's, so the app with the better star average is not the one people write more warmly about.

Double Canfield Solitaire ships an update every 10 months, Online Zoo Builder every 5 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | Double Canfield Solitaire | Online Zoo Builder |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [2.3 (3 ratings)](https://appshunter.io/ios/app/double-canfield-solitaire/id1120964908/reviews) | **[3.0 (2 ratings)](https://appshunter.io/ios/app/online-zoo-builder/id1580413484/reviews)** |
| Number of ratings | **3** | 2 |
| Positive reviews | **33.3% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Update frequency | Every 10 months | **Every 5 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 18 MB | 20 MB |
| Requires iOS | **12.0** | 16.5 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [MmpApps Corp.](https://appshunter.io/developer/400209427) | [Drennan Software LLC](https://appshunter.io/developer/1580253130) |

## What reviewers say

### Double Canfield Solitaire

[App page](https://appshunter.io/ios/app/double-canfield-solitaire/id1120964908)

Experience a fun twist on a classic card game with two decks. Enjoy four free variations, each offering a unique challenge and increased winnability compared to the single-deck version. Perfect for quick, engaging gameplay.

**Highlights:** Two-deck Canfield solitaire, Four free variations, Easier to win, Classic mode, Naked mode (revealed reserve), Relaxed mode (mixed suits), Flex mode (no auto-fill)

**Features:** macOS Compatibility

**In-app purchases:** none


### Online Zoo Builder

[App page](https://appshunter.io/ios/app/online-zoo-builder/id1580413484)

Build and manage your own virtual zoo in this free-to-play online game. Collaborate with friends, discover new animals and attractions, and keep your guests happy to ensure profitability. The game is updated weekly with fresh content.

**Highlights:** Build your dream zoo, Collaborate with friends, Discover and purchase animals, Manage zoo for profitability, Weekly content updates

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zoo Tokens x100 | $1.99 | one-time |


## Frequently asked questions

### Is Double Canfield Solitaire free?

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

### Is Online Zoo Builder free?

Online Zoo Builder is free to download, with in-app purchases available.

### Which has better reviews, Double Canfield Solitaire or Online Zoo Builder?

Online Zoo Builder is rated higher. Double Canfield Solitaire averages 2.3 out of 5 from 3 ratings, while Online Zoo Builder averages 3.0 from 2 ratings.

### Do Double Canfield Solitaire or Online Zoo Builder have ads?

Both Double Canfield Solitaire and Online Zoo Builder show ads.

### Which is updated more often, Double Canfield Solitaire or Online Zoo Builder?

Double Canfield Solitaire ships an update every 10 months, and Online Zoo Builder every 5 months. Most recently, Double Canfield Solitaire was updated on November 2, 2026 and Online Zoo Builder on November 3, 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.*