# KeckWatch vs Jupiter

The clearest difference is rating: Jupiter at 5.0 against KeckWatch's 4.3. KeckWatch's advantage is ads (none vs shown) and update cadence (every 5 weeks vs every 58 months). On price, 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.

Jupiter holds the better App Store score, 5.0 against 4.3. Both are backed by a comparable volume of ratings — 9 and 2 respectively.

KeckWatch ships an update every 5 weeks, Jupiter every 58 months. The most recent releases landed on October 14, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | KeckWatch | Jupiter |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.3 (9 ratings)](https://appshunter.io/ios/app/keckwatch/id953228443/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/jupiter-juno/id1562173082/reviews)** |
| Number of ratings | **9** | 2 |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 5 weeks** | Every 58 months |
| Monetization | **Free** | Ad-supported |
| Size | 147 MB | 153 MB |
| Requires iOS | **7.1** | 16.0 |
| 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


### Jupiter

[App page](https://appshunter.io/ios/app/jupiter-juno/id1562173082)

Explore Jupiter with stunning images and scientific insights from NASA's Juno mission. Features an immersive slideshow, interactive 3D models, and a dynamic video library for a deep-space educational experience.

**Highlights:** High-definition Jupiter images, Scientific insights for each image, Immersive full-screen slideshow, Dynamic video library, Interactive 3D models of Jupiter, Haptic feedback

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

**In-app purchases:** none


## Frequently asked questions

### Is KeckWatch free?

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

### Is Jupiter free?

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

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

Jupiter is rated higher. KeckWatch averages 4.3 out of 5 from 9 ratings, while Jupiter averages 5.0 from 2 ratings.

### Do KeckWatch or Jupiter have ads?

Jupiter shows ads; KeckWatch does not.

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

KeckWatch ships an update every 5 weeks, and Jupiter every 58 months. Most recently, KeckWatch was updated on October 14, 2026 and Jupiter on October 16, 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.*