# Roboball vs Liminal Observer

The clearest difference is price: Liminal Observer at Free against Roboball's $4.99. Roboball's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support there is nothing between them.

Liminal Observer is free to download; Roboball costs $4.99 up front. Liminal Observer sells 1 one-off in-app purchase. Roboball asks for nothing beyond the download.

## The numbers

| Metric | Roboball | Liminal Observer |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[3.5 (2 ratings)](https://appshunter.io/ios/app/roboball/id1508288751/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 50.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 19 months | — |
| Monetization | Paid | — |
| Size | 164 MB | 399 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 9+ |
| Developer | [Darya Vladislavovna](https://appshunter.io/developer/1067566962) | [ENES TURKAN](https://appshunter.io/developer/6778848256) |

## What reviewers say

### Roboball

[App page](https://appshunter.io/ios/app/roboball/id1508288751)

Control a ball-shaped robot to solve physics and logic puzzles. Manipulate mechanisms like buttons, lasers, and doors, sometimes with the help of objects, to reach the teleporter and advance through levels.

**Highlights:** Physics-based puzzles, Logic puzzles, Robot ball control, Mechanism interaction, Level progression, Object manipulation

**Features:** macOS Compatibility

**In-app purchases:** none


### Liminal Observer

[App page](https://appshunter.io/ios/app/liminal-observer-spot-anomaly/id6786920132)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads & Premium! | $2.99 | one-time |


## Frequently asked questions

### Is Roboball free?

Roboball costs $4.99, with no in-app purchases.

### Is Liminal Observer free?

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

### Do Roboball or Liminal Observer have ads?

Liminal Observer shows ads; Roboball does not.

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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.*