# Slendrina vs Outer Space Call Prank

The clearest difference is rating: Slendrina at 4.4 against Outer Space Call Prank's 3.1. Slendrina also leads on review sentiment (82% vs 56%) and ratings volume (539 vs 25). Outer Space Call Prank's advantage is monetization model (ad-supported vs free with in-app purchases) and iOS requirement (9.0 vs 13.0). On price, update cadence, ads and in-app purchases there is nothing between them.

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

Slendrina holds the better App Store score, 4.4 against 3.1. That said, the two scores are not equally well evidenced: Slendrina has 539 ratings behind it against 25, so its average is the more settled of the two. Written reviews point the same way: 82% of Slendrina's written reviews are positive against 56% of Outer Space Call Prank's.

Slendrina ships an update every 15 months, Outer Space Call Prank every 26 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | Slendrina | Outer Space Call Prank |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (539 ratings)](https://appshunter.io/ios/app/slendrina-asylum/id1218728918/reviews)** | [3.1 (25 ratings)](https://appshunter.io/ios/app/outer-space-call-prank/id1536579565/reviews) |
| Number of ratings | **539** | 25 |
| Positive reviews | **82.2% of reviews** | 55.6% of reviews |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 15 months** | Every 26 months |
| Monetization | Free with in-app purchases | **Ad-supported** |
| Size | 150 MB | 35 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 9+ |
| Developer | [Dennis Vukanovic](https://appshunter.io/developer/954916186) | [PHB Media Ltd](https://appshunter.io/developer/449688752) |

## What reviewers say

### Slendrina

[App page](https://appshunter.io/ios/app/slendrina-asylum/id1218728918)

Embark on a terrifying new adventure in an abandoned asylum. Navigate dark corridors, evade a malevolent presence, and uncover the secrets of the past. Find hidden pages, keys, and health potions to survive this chilling experience.

**Highlights:** Explore an abandoned asylum, Evade evil entities, Find 8 medical book pages, Collect keys to unlock doors, Use health potions, Hide from pursuers

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🚀 Fun and addictive
- 👍 Balanced difficulty
- 🎨 Atmospheric graphics and sounds
- 💡 Interesting lore and characters

**What reviewers complain about**

- 🐛 Occasional glitches and bugs
- 🕰️ Can be repetitive after multiple playthroughs
- 🔍 Difficulty finding the last page

**Reported bugs**

- One More Chance feature not working
- Slendrina and Angelene not behaving as expected
- Disappearing pages and keys

**Requested features**

- Add a practice mode
- Implement a difficulty selection menu
- Expand the game with new levels and content


### Outer Space Call Prank

[App page](https://appshunter.io/ios/app/outer-space-call-prank/id1536579565)

Receive simulated calls from various animated characters from outer space, including spacemen, aliens, and robots. This app provides unique sounds and animations for each caller, making it a fun tool for pranking friends and family.

**Highlights:** Simulated calls from space characters, Animated characters, Unique caller sounds and voices, Prank and entertainment app, Discover different space callers

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Slendrina free?

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

### Is Outer Space Call Prank free?

Outer Space Call Prank is free to download, with no in-app purchases.

### Which has better reviews, Slendrina or Outer Space Call Prank?

Slendrina is rated higher. Slendrina averages 4.4 out of 5 from 539 ratings, while Outer Space Call Prank averages 3.1 from 25 ratings.

### Do Slendrina or Outer Space Call Prank have ads?

Both Slendrina and Outer Space Call Prank show ads.

### Which is updated more often, Slendrina or Outer Space Call Prank?

Slendrina ships an update every 15 months, and Outer Space Call Prank every 26 months. Most recently, Slendrina was updated on October 24, 2026 and Outer Space Call Prank on October 24, 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.*