# YSAC vs Flataverse

The clearest difference is in-app purchases: YSAC at none against Flataverse's 4. Flataverse's advantage is update cadence (monthly vs every 5 months) and iOS requirement (13.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Flataverse sells 4 in-app purchases, starting at $6.99 per 7 days. YSAC asks for nothing beyond the download.

YSAC ships an update every 5 months, Flataverse monthly. The most recent releases landed on September 28, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | YSAC | Flataverse |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.6 (830 ratings)](https://appshunter.io/ios/app/flataverse-explore-flat-earth/id6720764565/reviews)** |
| Number of ratings | — | **830** |
| Positive reviews | — | 46.7% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 5 months | **Monthly** |
| Monetization | — | Free with in-app purchases |
| Size | 25 MB | 486 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | +4 |
| Developer | [Vojtech Novotny](https://appshunter.io/developer/1582194624) | [Appsline](https://appshunter.io/developer/1633063013) |

## What reviewers say

### YSAC

[App page](https://appshunter.io/ios/app/ysac/id6667118903)

**Features:** macOS Compatibility

**In-app purchases:** none


### Flataverse

[App page](https://appshunter.io/ios/app/flataverse-explore-flat-earth/id6720764565)

Explore an interactive 3D model of a flat Earth, engage with alternative theories, and test your knowledge through simulations and quizzes. This app encourages critical thinking and offers a unique perspective on natural phenomena.

**Highlights:** Interactive 3D flat Earth model, Evidence and counterargument cards, Volcano and tsunami simulations, Knowledge-testing quizzes, Exploration of alternative theories

**Features:** macOS Compatibility

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Discovery Week | $6.99 | per 7 days |
| Discovery Week | $6.99 | per 7 days |
| One Year Explorer (50% OFF) | $24.99 | per year |
| One Year Explorer | $49.99 | per year |

**What reviewers like**

- 💡 Educational content with hands-on simulation tools
- 🎮 Interactive 3D flat earth model and quizzes
- 📚 Comprehensive information and resources
- ✨ Visually appealing design and interface
- 🔄 Smooth app performance overall

**What reviewers complain about**

- 💰 Expensive pricing ($7/month or $50/year)
- ❌ Misleading and inaccurate information
- 🤔 Misrepresents flat earth community arguments
- 🔒 Paywalls blocking access to content
- 🐛 Glitchy zoom functionality and texture issues

**Reported bugs**

- Glitchy zoom functionality on 3D model
- Wonky rotations on the globe visualization
- Texture quality needs improvement

**Requested features**

- Community chat room or discussion board
- Free or lower-cost access to content
- Better 3D model textures and polish
- Fix rotation glitches on the globe model
- More witnessable, observable evidence


## Frequently asked questions

### Is YSAC free?

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

### Is Flataverse free?

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

### Do YSAC or Flataverse have ads?

Neither YSAC nor Flataverse shows ads.

### Which is updated more often, YSAC or Flataverse?

YSAC ships an update every 5 months, and Flataverse monthly. Most recently, YSAC was updated on September 28, 2026 and Flataverse on October 13, 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.*