# Observer Pro vs Telescopius

The clearest difference is price: Telescopius at Free against Observer Pro's $13.99. Telescopius also leads on device support (3 vs 1). Observer Pro's advantage is rating (4.6 vs 3.6) and review sentiment (79% vs 54%). On ads, in-app purchases and iOS requirement there is nothing between them.

Telescopius is free to download; Observer Pro costs $13.99 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 3.6. That said, the two scores are not equally well evidenced: Observer Pro has 49 ratings behind it against 8, so its average is the more settled of the two. Written reviews point the same way: 79% of Observer Pro's written reviews are positive against 54% of Telescopius's.

## The numbers

| Metric | Observer Pro | Telescopius |
| --- | --- | --- |
| Price | $13.99 | **Free** |
| Rating | **[4.6 (49 ratings)](https://appshunter.io/ios/app/observer-pro/id462392803/reviews)** | [3.6 (8 ratings)](https://appshunter.io/ios/app/telescopius/id6479415751/reviews) |
| Number of ratings | **49** | 8 |
| Positive reviews | **79.2% of reviews** | 53.8% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | — |
| Monetization | Paid | **Free** |
| Size | 241 MB | 3 MB |
| Requires iOS | 16.4 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Joshua Bury](https://appshunter.io/developer/462392806) | [Sebastian Oscar Garcia Rojas](https://appshunter.io/developer/1735930655) |

## 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


### Telescopius

[App page](https://appshunter.io/ios/app/telescopius/id6479415751)

Discover celestial objects for your telescope and plan stunning astrophotography shots. Save favorite targets, simulate camera framings, and create intricate mosaics. Explore a community gallery of breathtaking astrophotography.

**Highlights:** Find telescope targets, Save favorite celestial objects, Simulate astrophotography framings, Plan image mosaics, Community astrophotography gallery

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Observer Pro free?

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

### Is Telescopius free?

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

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

Observer Pro is rated higher. Observer Pro averages 4.6 out of 5 from 49 ratings, while Telescopius averages 3.6 from 8 ratings.

### Do Observer Pro or Telescopius have ads?

Neither Observer Pro nor Telescopius shows ads.

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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.*