# Celestron SkyPortal vs Singularity by Vaonis

The clearest difference is rating: Singularity by Vaonis at 4.2 against Celestron SkyPortal's 3.6. Singularity by Vaonis also leads on review sentiment (64% vs 32%) and update cadence (every 5 weeks vs every 3 months). Celestron SkyPortal's advantage is ratings volume (354 vs 75). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Singularity by Vaonis holds the better App Store score, 4.2 against 3.6. Both are backed by a comparable volume of ratings — 354 and 75 respectively. Written reviews point the same way: 32% of Celestron SkyPortal's written reviews are positive against 64% of Singularity by Vaonis's.

Celestron SkyPortal ships an update every 3 months, Singularity by Vaonis every 5 weeks. The most recent releases landed on October 26, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Celestron SkyPortal | Singularity by Vaonis |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.6 (354 ratings)](https://appshunter.io/ios/app/celestron-skyportal/id877780544/reviews) | **[4.2 (75 ratings)](https://appshunter.io/ios/app/singularity-by-vaonis/id1515280835/reviews)** |
| Number of ratings | **354** | 75 |
| Positive reviews | 31.9% of reviews | **64.4% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 709 MB | 401 MB |
| Requires iOS | 18.6 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Celestron, LLC](https://appshunter.io/developer/445142854) | [Vaonis](https://appshunter.io/developer/1369139518) |

## What reviewers say

### Celestron SkyPortal

[App page](https://appshunter.io/ios/app/celestron-skyportal/id877780544)

Explore the cosmos with a comprehensive astronomy suite. Discover stars, planets, and celestial events, and enhance your stargazing with detailed information and audio narration. Connect to compatible telescopes for automatic object location.

**Highlights:** Explore 120,000 stars and celestial objects, Simulate night sky past/future, Real-time sky synchronization, Control compatible WiFi telescopes, Animate celestial events, Audio narration and object descriptions, Night Vision mode

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

**In-app purchases:** none

**What reviewers like**

- 👍 Great app
- 🚀 Transforms stargazing
- 💡 Wonderful features
- 👍 Convenient control
- 👍 Incredible for free

**What reviewers complain about**

- 🐛 Alignment issues
- 🐛 Connectivity problems
- 🐛 Laggy controls
- 🐛 Inaccurate compass
- 🐛 Crashes and freezes

**Reported bugs**

- Fails to align telescope
- Telescope points in wrong direction
- Disconnects frequently
- Doesn't show deep sky objects
- Crashes on startup

**Requested features**

- Add red night mode
- Improve focus motor control
- Integrate weather data
- Provide RA/DEC coordinates
- Add more celestial objects


### Singularity by Vaonis

[App page](https://appshunter.io/ios/app/singularity-by-vaonis/id1515280835)

Control your smart telescope to explore the cosmos. Discover celestial objects with personalized recommendations, capture stunning images of galaxies and nebulae, and share your astronomical journey.

**Highlights:** Automatic setup and alignment, Real-time image processing, Object catalog and coordinate pointing, Mosaic mode for wider views, Solar observation mode, Expert mode for advanced control, Night planning and automated exploration

**In-app purchases:** none

**What reviewers like**

- 👍 Easy to use and set up
- 🌟 Stunning photo quality
- ✨ Magical viewing experience
- 🚀 Smooth operation
- ✅ Well-designed interface

**What reviewers complain about**

- 👎 No landscape mode for iPad/iPhone
- 😠 Forced app updates
- 🌐 Too American-centric
- 📉 Blurred catalog images
- ⚠️ Quality control issues

**Reported bugs**

- Crashing constantly
- Solar images turned green
- Moon pictures are broken
- App crashes telescope
- Keeps losing connection to iPad

**Requested features**

- Add landscape mode for iPad and iPhone
- Add a sky map to the app
- Allow planning of multi-night observations
- Enable manual control of the observation arm
- Add iOS widgets


## Frequently asked questions

### Is Celestron SkyPortal free?

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

### Is Singularity by Vaonis free?

Singularity by Vaonis is free to download, with no in-app purchases.

### Which has better reviews, Celestron SkyPortal or Singularity by Vaonis?

Singularity by Vaonis is rated higher. Celestron SkyPortal averages 3.6 out of 5 from 354 ratings, while Singularity by Vaonis averages 4.2 from 75 ratings.

### Do Celestron SkyPortal or Singularity by Vaonis have ads?

Neither Celestron SkyPortal nor Singularity by Vaonis shows ads.

### Which is updated more often, Celestron SkyPortal or Singularity by Vaonis?

Celestron SkyPortal ships an update every 3 months, and Singularity by Vaonis every 5 weeks. Most recently, Celestron SkyPortal was updated on October 26, 2026 and Singularity by Vaonis on October 24, 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.*