# Twifty Quiz vs Flocking Simulator

The clearest difference is in-app purchases: Flocking Simulator at none against Twifty Quiz's 3. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Twifty Quiz sells 3 in-app purchases, starting at $0.99 per month. Flocking Simulator asks for nothing beyond the download.

## The numbers

| Metric | Twifty Quiz | Flocking Simulator |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/flocking-simulator/id6757456530/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | **Free** |
| Size | 11 MB | 43 MB |
| Requires iOS | 16.0 | **15.1** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Aziz Ullah](https://appshunter.io/developer/1704118752) | [Victor Rodriguez](https://appshunter.io/developer/1865544820) |

## What reviewers say

### Twifty Quiz

[App page](https://appshunter.io/ios/app/twifty-quiz/id6464455110)

Test your Swift programming knowledge with a fun quiz game. Learn concepts and syntax through detailed explanations for each question. Ideal for aspiring iOS developers and programming enthusiasts.

**Highlights:** Swift syntax and concept questions, Detailed explanations for answers, Suitable for beginners and advanced developers, Learn while playing, iOS app development focus

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Plan | $0.99 | per month |
| Pro Plan | $1.99 | per 3 months |
| Pro Plan | $4.99 | per 6 months |


### Flocking Simulator

[App page](https://appshunter.io/ios/app/flocking-simulator/id6757456530)

Explore emergent behavior and steering rules with a "boids" simulation. Adjust forces like separation, alignment, and cohesion to create lifelike motion. Experiment with visual options and observe instant reactions to your changes.

**Highlights:** Adjustable flocking forces (separation, alignment, cohesion), Customizable perception radius, speed, and steering, Visual options: boid shape, color modes, debug overlays, Real-time swarm reaction to parameter changes, Learning emergent behavior and steering rules, Generative visuals and relaxing motion

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Twifty Quiz free?

Twifty Quiz is free to download, with in-app purchases available.

### Is Flocking Simulator free?

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

### Do Twifty Quiz or Flocking Simulator have ads?

Neither Twifty Quiz nor Flocking Simulator shows ads.

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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.*