# KeckWatch vs Hubble

KeckWatch and Hubble both sit at 4.3 stars, but that hides the real split: 83% of KeckWatch's written reviews are positive against 0% of Hubble's. KeckWatch also leads on ads (none vs shown) and update cadence (every 5 weeks vs every 5 months). On price, rating, ratings volume 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.

On the App Store both sit at effectively the same score — 4.3 for KeckWatch against 4.4 for Hubble. Both are backed by a comparable volume of ratings — 9 and 8 respectively. Written reviews are what separate them: 83% of KeckWatch's written reviews are positive against 0% of Hubble's.

KeckWatch ships an update every 5 weeks, Hubble every 5 months. Both last shipped on October 24, 2026.

## The numbers

| Metric | KeckWatch | Hubble |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (9 ratings)](https://appshunter.io/ios/app/keckwatch/id953228443/reviews) | **[4.4 (8 ratings)](https://appshunter.io/ios/app/hubble-deep-space/id1545745146/reviews)** |
| Number of ratings | **9** | 8 |
| Positive reviews | **83.3% of reviews** | 0.0% of reviews |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 5 months |
| Monetization | **Free** | Ad-supported |
| Size | 147 MB | 2.9 GB |
| Requires iOS | **7.1** | 17.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 9+ |
| Developer | [Mike Smithwick](https://appshunter.io/developer/294198918) | [Alparslan Topbas](https://appshunter.io/developer/1130875171) |

## What reviewers say

### KeckWatch

[App page](https://appshunter.io/ios/app/keckwatch/id953228443)

Explore the cosmos with detailed information on stars, planets, galaxies, and nebulae. Discover celestial objects using your device's compass and GPS, and stay updated with news from the W. M. Keck Observatory. Features a night-vision-friendly red interface and offline access.

**Highlights:** Offline celestial exploration, Real-time telescope status, Compass and GPS integration, Detailed object information, Hawaiian star names, Night vision red interface, Keck Observatory news

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

**In-app purchases:** none


### Hubble

[App page](https://appshunter.io/ios/app/hubble-deep-space/id1545745146)

Explore the universe in high definition with stunning images from the Hubble Space Telescope. Discover galaxies, nebulae, and star clusters with detailed descriptions and an immersive slideshow experience. Stay updated with the latest cosmic discoveries.

**Highlights:** High-resolution cosmic image gallery, Immersive slideshow mode, Searchable database of celestial objects, Detailed scientific descriptions, Real-time updates for 'Picture of the Week', Links to NASA/ESA archives

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

**In-app purchases:** none


## Frequently asked questions

### Is KeckWatch free?

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

### Is Hubble free?

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

### Which has better reviews, KeckWatch or Hubble?

Hubble is rated higher. KeckWatch averages 4.3 out of 5 from 9 ratings, while Hubble averages 4.4 from 8 ratings.

### Do KeckWatch or Hubble have ads?

Hubble shows ads; KeckWatch does not.

### Which is updated more often, KeckWatch or Hubble?

KeckWatch ships an update every 5 weeks, and Hubble every 5 months. Most recently, KeckWatch was updated on October 24, 2026 and Hubble 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.*