# Act Fast vs Planetarium Projector

The clearest difference is update cadence: Planetarium Projector at every 2 months against Act Fast's every 9 months. Planetarium Projector also leads on iOS requirement (13.0 vs 15.1). 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.

Act Fast ships an update every 9 months, Planetarium Projector every 2 months. The most recent releases landed on October 25, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Act Fast | Planetarium Projector |
| --- | --- | --- |
| 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 9 months | **Every 2 months** |
| Monetization | — | Free |
| Size | 18 MB | 574 MB |
| Requires iOS | 15.1 | **13.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Sugar Rush Creative](https://appshunter.io/developer/723565884) | [Clementoni S.p.A.](https://appshunter.io/developer/575135209) |

## What reviewers say

### Act Fast

[App page](https://appshunter.io/ios/app/act-fast/id6459059584)

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is Act Fast free?

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

### Is Planetarium Projector free?

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

### Do Act Fast or Planetarium Projector have ads?

Neither Act Fast nor Planetarium Projector shows ads.

### Which is updated more often, Act Fast or Planetarium Projector?

Act Fast ships an update every 9 months, and Planetarium Projector every 2 months. Most recently, Act Fast was updated on October 25, 2026 and Planetarium Projector 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.*