# MindDrop Crystal Orb vs Zeus vs Underworld

The clearest difference is ads: MindDrop Crystal Orb at none against Zeus vs Underworld's shown. On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

MindDrop Crystal Orb ships an update every 3 days, Zeus vs Underworld every 2 days. Both last shipped on October 28, 2026.

## The numbers

| Metric | MindDrop Crystal Orb | Zeus vs Underworld |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 3 days | **Every 2 days** |
| Size | 11 MB | 13 MB |
| Requires iOS | 14.0 | 14.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Cloyd Monce](https://appshunter.io/developer/1827918779) | [GRUPEER SIA](https://appshunter.io/developer/1837413583) |

## What reviewers say

### MindDrop Crystal Orb

[App page](https://appshunter.io/ios/app/minddrop-crystal-orb/id6748907030)

**In-app purchases:** none


### Zeus vs Underworld

[App page](https://appshunter.io/ios/app/zeus-vs-underworld/id6751887222)

**In-app purchases:** none


## Frequently asked questions

### Is MindDrop Crystal Orb free?

MindDrop Crystal Orb is free to download, with no in-app purchases.

### Is Zeus vs Underworld free?

Zeus vs Underworld is free to download, with no in-app purchases.

### Do MindDrop Crystal Orb or Zeus vs Underworld have ads?

Zeus vs Underworld shows ads; MindDrop Crystal Orb does not.

### Which is updated more often, MindDrop Crystal Orb or Zeus vs Underworld?

MindDrop Crystal Orb ships an update every 3 days, and Zeus vs Underworld every 2 days. Most recently, MindDrop Crystal Orb was updated on October 28, 2026 and Zeus vs Underworld on October 28, 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.*