# Observer Pro vs AstroAid

The clearest difference is price: AstroAid at $2.99 against Observer Pro's $13.99. AstroAid also leads on update cadence (fortnightly vs every 6 months) and device support (3 vs 1). Observer Pro's advantage is rating (4.6 vs 4.3) and review sentiment (79% vs 71%). On ratings volume, ads and in-app purchases there is nothing between them.

Observer Pro costs $13.99 and AstroAid $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Observer Pro holds the better App Store score, 4.6 against 4.3. Both are backed by a comparable volume of ratings — 49 and 44 respectively. Written reviews point the same way: 79% of Observer Pro's written reviews are positive against 71% of AstroAid's.

Observer Pro ships an update every 6 months, AstroAid fortnightly. The most recent releases landed on October 8, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Observer Pro | AstroAid |
| --- | --- | --- |
| Price | $13.99 | **$2.99** |
| Rating | **[4.6 (49 ratings)](https://appshunter.io/ios/app/observer-pro/id462392803/reviews)** | [4.3 (44 ratings)](https://appshunter.io/ios/app/astroaid/id541448395/reviews) |
| Number of ratings | **49** | 44 |
| Positive reviews | **79.2% of reviews** | 71.1% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Fortnightly** |
| Monetization | Paid | **Free** |
| Size | 241 MB | 125 MB |
| Requires iOS | 16.4 | **10.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Joshua Bury](https://appshunter.io/developer/462392806) | [iLanga, Inc.](https://appshunter.io/developer/541448398) |

## What reviewers say

### Observer Pro

[App page](https://appshunter.io/ios/app/observer-pro/id462392803)

This app helps advanced astronomers and astrophotographers plan their observing sessions. It predicts object visibility, factoring in local obstructions, and provides weather forecasts. Manage observing lists and favorite sites to maximize your stargazing time.

**Highlights:** 14,000+ deep sky objects with photos, Local horizon profile measurement, Object visibility prediction charts, Featured object recommendations, Favorite observing site management, Astronomical weather forecasts

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 🎯 Excellent target planning and visibility forecasting
- 🌍 Custom horizon mapping feature is intuitive and unique
- 📊 Comprehensive visualization graphs and charts
- 🔍 Extensive DSO catalog with detailed object information
- 📸 Offline object images included

**What reviewers complain about**

- 🐛 Crashes when selecting catalog groupings (recent)
- 🐛 Keyboard doesn't dismiss after input (iPad issue)
- 🐛 Data loss - observer lists disappearing
- 🐛 Search function missing in recent version
- ⏱️ Lack of developer updates for extended periods

**Reported bugs**

- App crashes when selecting catalog groupings (Galaxy, Planetary Nebulae, etc.)
- iOS keyboard doesn't dismiss on iPad after clicking Done
- Observer lists and custom data disappearing after app closure
- Search feature missing in version 1.4
- Continuous crashes since recent updates

**Requested features**

- iPad native app with landscape mode support
- Search functionality restoration/improvement
- Export observer lists to other apps (Sky Safari, etc.)
- Support for planets, comets, and asteroids
- Observing notes and session logging


### AstroAid

[App page](https://appshunter.io/ios/app/astroaid/id541448395)

Visualize what you'll see through your telescope with different eyepieces and optical aids. Plan your astrophotography by pairing cameras with telescopes to see what fits in the frame. Includes astronomical catalogs and equipment lists.

**Highlights:** Telescope/eyepiece/imager field of view simulation, Magnification and visual magnitude limit calculation, Built-in astronomical object catalogs (Messier, NGC, IC), Searchable object catalogs with downloadable images, Extensive equipment lists with custom entry support, iCloud synchronization for custom equipment

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

**In-app purchases:** none


## Frequently asked questions

### Is Observer Pro free?

Observer Pro costs $13.99, with no in-app purchases.

### Is AstroAid free?

AstroAid costs $2.99, with no in-app purchases.

### Which has better reviews, Observer Pro or AstroAid?

Observer Pro is rated higher. Observer Pro averages 4.6 out of 5 from 49 ratings, while AstroAid averages 4.3 from 44 ratings.

### Do Observer Pro or AstroAid have ads?

Neither Observer Pro nor AstroAid shows ads.

### Which is updated more often, Observer Pro or AstroAid?

Observer Pro ships an update every 6 months, and AstroAid fortnightly. Most recently, Observer Pro was updated on October 8, 2026 and AstroAid on October 7, 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.*