# Astrospheric vs Caelo

The clearest difference is chart position: Astrospheric at #73 against Caelo's unranked. Astrospheric also leads on device support (3 vs 1) and iOS requirement (15.1 vs 18.0). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Astrospheric sells 2 in-app purchases, starting at $2.99 per month and Caelo sells 4 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Astrospheric ships an update every 2 weeks, Caelo every 3 weeks. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Astrospheric | Caelo |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (487 ratings)](https://appshunter.io/ios/app/astrospheric/id1166046863/reviews)** | — |
| Number of ratings | **487** | — |
| Positive reviews | 86.8% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | Freemium | — |
| Best chart rank | **#73** | — |
| Size | 39 MB | 16 MB |
| Requires iOS | **15.1** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Daniel Fiordalis](https://appshunter.io/developer/1166046862) | [Paul Jeffrey Smith](https://appshunter.io/developer/6785107056) |

## What reviewers say

### Astrospheric

[App page](https://appshunter.io/ios/app/astrospheric/id1166046863)

**Currently charting:** #73 Top Grossing · Weather, #143 Top Free · Weather (US App Store)

This app offers advanced weather forecasting and astronomical data for stargazers and astrophotographers. It provides detailed hourly forecasts, cloud and sky transparency reports, and alerts for celestial events. It also includes tools for astronomical societies and offline site setup.

**Highlights:** 84-hour hourly weather forecast, Ensemble cloud forecast, Kp index for Aurora, ISS flyover paths, Integrated smoke forecast, Sky and ground data, Rise and set times, Solar and Lunar eclipse data

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Astrospheric Pro Subscription | $2.99 | per month |
| Astrospheric Pro Subscription | $29.99 | per year |

**What reviewers like**

- 🚀 Precision tool for astrophotography
- 🔍 Detailed weather forecasts
- ⭐ Accurate and reliable
- 💻 Comprehensive data and features
- 📊 Helpful for planning observing sessions

**What reviewers complain about**

- 🐛 Occasional inaccurate forecasts
- 🔍 Missing some weather data (e.g. wind)
- 💰 Subscription required for full functionality
- 🔌 Compatibility issues on some devices

**Reported bugs**

- App crashing or not loading on some devices
- Inconsistent temperature and wind data

**Requested features**

- Notification system for clear skies
- Widgets for quick access to data
- More detailed transparency and seeing data
- Ability to flip east and west in the app


### Caelo

[App page](https://appshunter.io/ios/app/caelo/id6786577782)

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Small Tip | $0.99 | one-time |
| Medium Tip | $1.99 | one-time |
| Large Tip | $2.99 | one-time |
| Caelo Pro | $3.99 | one-time |


## Frequently asked questions

### Is Astrospheric free?

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

### Is Caelo free?

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

### Do Astrospheric or Caelo have ads?

Neither Astrospheric nor Caelo shows ads.

### Which is updated more often, Astrospheric or Caelo?

Astrospheric ships an update every 2 weeks, and Caelo every 3 weeks. Most recently, Astrospheric was updated on November 11, 2026 and Caelo on November 5, 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.*