# Cassini HD vs Hubble

The clearest difference is update cadence: Cassini HD at every 2 months against Hubble's every 9 months. Hubble's advantage is price ($0.99 vs $1.99) and iOS requirement (15.6 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Cassini HD costs $1.99 and Hubble $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Cassini HD ships an update every 2 months, Hubble every 9 months. The most recent releases landed on October 21, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | Cassini HD | Hubble |
| --- | --- | --- |
| Price | $1.99 | **$0.99** |
| Rating | **[4.3 (6 ratings)](https://appshunter.io/ios/app/cassini-hd/id556755648/reviews)** | — |
| Number of ratings | **6** | — |
| Positive reviews | 94.1% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 9 months |
| Monetization | Paid | — |
| Size | 124 MB | 1.7 GB |
| Requires iOS | 17.0 | **15.6** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 9+ |
| Developer | [Thinx Media Interactive LLC](https://appshunter.io/developer/556755791) | [Alparslan Topbas](https://appshunter.io/developer/1130875171) |

## What reviewers say

### Cassini HD

[App page](https://appshunter.io/ios/app/cassini-hd/id556755648)

Explore Saturn and its moons through a stunning collection of over 960 NASA images. Navigate an alien world with interactive maps and detailed captions. Save and share your favorite discoveries.

**Highlights:** Over 960 NASA images of Saturn and moons, Interactive navigation map and thumbnails, Detailed image captions, Add images to favorites, Save images to photo roll, Social media sharing

**Features:** macOS Compatibility

**In-app purchases:** none


### Hubble

[App page](https://appshunter.io/ios/app/hubble-deep-space-pro/id1579382668)

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

**In-app purchases:** none


## Frequently asked questions

### Is Cassini HD free?

Cassini HD costs $1.99, with no in-app purchases.

### Is Hubble free?

Hubble costs $0.99, with no in-app purchases.

### Do Cassini HD or Hubble have ads?

Neither Cassini HD nor Hubble shows ads.

### Which is updated more often, Cassini HD or Hubble?

Cassini HD ships an update every 2 months, and Hubble every 9 months. Most recently, Cassini HD was updated on October 21, 2026 and Hubble on October 30, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*