# Portable Planetarium vs GowanusAR

The clearest difference is iOS requirement: GowanusAR at 13.0 against Portable Planetarium's 16.0. 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.

Portable Planetarium ships an update every 4 months, GowanusAR every 5 months. The most recent releases landed on October 3, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Portable Planetarium | GowanusAR |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/gowanusar/id6747295340/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 4 months** | Every 5 months |
| Monetization | — | Free |
| Size | 85 MB | 1.2 GB |
| Requires iOS | 16.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Masaya Nagaoka](https://appshunter.io/developer/1698240335) | [Sarah Drury](https://appshunter.io/developer/1832071542) |

## What reviewers say

### Portable Planetarium

[App page](https://appshunter.io/ios/app/portable-planetarium/id6477368609)

**In-app purchases:** none


### GowanusAR

[App page](https://appshunter.io/ios/app/gowanusar/id6747295340)

Experience the history of Brooklyn's Gowanus Canal through an immersive augmented reality application. Discover stories, sounds, and speculative futures embedded in the landscape as you explore the neighborhood.

**Highlights:** Augmented Reality Navigation, Immersive Spatial Audio, Interactive Storytelling, Speculative Histories, Location-based AR experiences

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Portable Planetarium free?

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

### Is GowanusAR free?

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

### Do Portable Planetarium or GowanusAR have ads?

Neither Portable Planetarium nor GowanusAR shows ads.

### Which is updated more often, Portable Planetarium or GowanusAR?

Portable Planetarium ships an update every 4 months, and GowanusAR every 5 months. Most recently, Portable Planetarium was updated on October 3, 2026 and GowanusAR on October 6, 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.*