# Planetarium Projector vs Linky PRF

The clearest difference is update cadence: Linky PRF at every 3 weeks against Planetarium Projector's every 2 months. Planetarium Projector's advantage is iOS requirement (13.0 vs 15.0). On price, ads, 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.

Planetarium Projector ships an update every 2 months, Linky PRF every 3 weeks. Both last shipped on October 24, 2026.

## The numbers

| Metric | Planetarium Projector | Linky PRF |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/planetarium-projector/id6471595659/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 22.2% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | — |
| Size | 574 MB | 100 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Clementoni S.p.A.](https://appshunter.io/developer/575135209) | [Bizpills S.L.](https://appshunter.io/developer/475340200) |

## What reviewers say

### Planetarium Projector

[App page](https://appshunter.io/ios/app/planetarium-projector/id6471595659)

Explore the universe with interactive lessons on constellations, planets, and space exploration. Engage with 3D augmented reality models and fun quizzes to learn about space history and mythology.

**Highlights:** Interactive space narrator, Augmented reality 3D models, Constellation drawing, Space conquest quiz, Planet and space facts, Rocket launching game

**Features:** macOS Compatibility

**In-app purchases:** none


### Linky PRF

[App page](https://appshunter.io/ios/app/linky-prf/id6502986690)

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

**In-app purchases:** none


## Frequently asked questions

### Is Planetarium Projector free?

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

### Is Linky PRF free?

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

### Do Planetarium Projector or Linky PRF have ads?

Neither Planetarium Projector nor Linky PRF shows ads.

### Which is updated more often, Planetarium Projector or Linky PRF?

Planetarium Projector ships an update every 2 months, and Linky PRF every 3 weeks. Most recently, Planetarium Projector was updated on October 24, 2026 and Linky PRF 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.*