# Sky Guide vs Constellation Guide

The clearest difference is ratings volume: Sky Guide at 374K against Constellation Guide's 2. Sky Guide also leads on chart position (#7 vs unranked) and device support (4 vs 2). Constellation Guide's advantage is rating (5.0 vs 4.8) and review sentiment (100% vs 86%). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Sky Guide sells 6 in-app purchases, starting at $4.99 per month and Constellation Guide sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Constellation Guide holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Sky Guide has 374K ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 86% of Sky Guide's written reviews are positive against 100% of Constellation Guide's.

Sky Guide ships an update every 2 weeks, Constellation Guide fortnightly. The most recent releases landed on September 27, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | Sky Guide | Constellation Guide |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (374K ratings)](https://appshunter.io/ios/app/sky-guide/id576588894/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/constellation-guide/id6759224274/reviews)** |
| Number of ratings | **374K** | 2 |
| Positive reviews | 86.0% of reviews | **100.0% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Fortnightly |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Best chart rank | **#7** | — |
| Size | 379 MB | 104 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | **iPhone, iPad, Apple Watch, Vision Pro** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Fifth Star Labs LLC](https://appshunter.io/developer/451087546) | [PROBABILITY LLC](https://appshunter.io/developer/1482354660) |

## What reviewers say

### Sky Guide

[App page](https://appshunter.io/ios/app/sky-guide/id576588894)

**Currently charting:** #7 Top Free · Reference, #18 Top Grossing · Reference (US App Store)

Identify stars, constellations, planets, and satellites in real-time by holding your device overhead. Explore celestial bodies with AR overlays, track satellites like the ISS, and travel through time to view past and future astronomical events. Perfect for both novice and experienced stargazers.

**Highlights:** Automatic celestial object identification, Augmented reality sky overlay, Satellite tracking and notifications, Time travel for past/future viewing, Personalized astronomical event calendar, Offline functionality

**Features:** macOS Compatibility, Family Sharing, Apple Watch app

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| PLUS | $4.99 | per month |
| PRO | $8.99 | per month |
| PLUS | $39.99 | per year |
| PRO | $59.99 | per year |
| All Constellations | $1.99 | one-time |
| PRO Lifetime | $249.99 | one-time |

**What reviewers like**

- 🌟 Stunning visuals and graphics
- 📚 Wealth of information on celestial objects
- 🧭 Accurate and responsive compass/AR features
- 🌌 Immersive stargazing experience
- 🔍 Ability to identify stars, planets, and satellites

**What reviewers complain about**

- 🧭 Occasional compass/location calibration issues
- 💰 Subscription model limits access to some features
- 🌍 Lack of support for certain regions/locations
- 🕰️ Outdated information on some celestial objects

**Reported bugs**

- App freezes when near polar regions
- Occasional crashes or performance issues

**Requested features**

- Add more detailed information on moons of planets
- Implement mosaic planning tools for astrophotography
- Provide earlier notifications for satellite/ISS passes
- Allow users to share their observations and photos
- Improve integration with telescope/camera equipment


### Constellation Guide

[App page](https://appshunter.io/ios/app/constellation-guide/id6759224274)

Explore the night sky with an AI-powered guide. Identify stars, constellations, and planets in real-time with AR overlays. Learn astronomy through stories and deep space exploration, all available offline.

**Highlights:** AI Sky Guide for astronomy questions, Deep Space Zoom into nebulae and galaxies, Astronomy Stories and Constellation Art, Time Travel to past and future sky views, AR Camera Mode for real-time identification, Offline sky mapping

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro Monthly | $9.99 | per month |
| Pro Annual | $39.99 | per year |


## Frequently asked questions

### Is Sky Guide free?

Sky Guide is free to download, with in-app purchases available.

### Is Constellation Guide free?

Constellation Guide is free to download, with in-app purchases available.

### Which has better reviews, Sky Guide or Constellation Guide?

Constellation Guide is rated higher. Sky Guide averages 4.8 out of 5 from 374K ratings, while Constellation Guide averages 5.0 from 2 ratings.

### Do Sky Guide or Constellation Guide have ads?

Neither Sky Guide nor Constellation Guide shows ads.

### Which is updated more often, Sky Guide or Constellation Guide?

Sky Guide ships an update every 2 weeks, and Constellation Guide fortnightly. Most recently, Sky Guide was updated on September 27, 2026 and Constellation Guide on September 13, 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.*