# CelestialGuide vs Cosmic Alerts

The clearest difference is price: Cosmic Alerts at Free against CelestialGuide's $0.99. Cosmic Alerts also leads on update cadence (daily vs every 17 months). CelestialGuide's advantage is in-app purchases (none vs 1) and ads (none vs shown). On device support and iOS requirement there is nothing between them.

Cosmic Alerts is free to download; CelestialGuide costs $0.99 up front. Cosmic Alerts sells 1 one-off in-app purchase. CelestialGuide asks for nothing beyond the download.

CelestialGuide ships an update every 17 months, Cosmic Alerts daily. The most recent releases landed on October 7, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | CelestialGuide | Cosmic Alerts |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/celestialguide/id649358382/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 17 months | **Daily** |
| Monetization | Paid | — |
| Size | 17 MB | 6 MB |
| Requires iOS | 18.0 | 18.0 |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Geoffrey Domm](https://appshunter.io/developer/373378724) | [AKIRA TEZUKA](https://appshunter.io/developer/6791202359) |

## What reviewers say

### CelestialGuide

[App page](https://appshunter.io/ios/app/celestialguide/id649358382)

Explore the cosmos with an interactive sky map that displays stars, planets, and celestial events. Point your device at the sky to see a real-time representation of your surroundings, with adjustable visibility settings for stars.

**Highlights:** Interactive sky map, Real-time celestial tracking, Adjustable star visibility, Planet and comet locations, Eclipse and transit rendering, Messier Object database, Virtual Orrery

**Features:** macOS Compatibility

**In-app purchases:** none


### Cosmic Alerts

[App page](https://appshunter.io/ios/app/cosmic-alerts-gw-and-grb-map/id6807910904)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $1.99 | one-time |


## Frequently asked questions

### Is CelestialGuide free?

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

### Is Cosmic Alerts free?

Cosmic Alerts is free to download, with in-app purchases available.

### Do CelestialGuide or Cosmic Alerts have ads?

Cosmic Alerts shows ads; CelestialGuide does not.

### Which is updated more often, CelestialGuide or Cosmic Alerts?

CelestialGuide ships an update every 17 months, and Cosmic Alerts daily. Most recently, CelestialGuide was updated on October 7, 2026 and Cosmic Alerts on October 26, 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.*