# Bubble Level + Compass vs Cygnus Astro

The clearest difference is rating: Bubble Level + Compass at 5.0 against Cygnus Astro's 4.5. Bubble Level + Compass also leads on review sentiment (90% vs 67%) and ratings volume (34 vs 2). Cygnus Astro's advantage is ads (none vs shown) and update cadence (every 5 days vs every 4 months). On price, in-app purchases and device support there is nothing between them.

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

Bubble Level + Compass holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Bubble Level + Compass has 34 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 90% of Bubble Level + Compass's written reviews are positive against 67% of Cygnus Astro's.

Bubble Level + Compass ships an update every 4 months, Cygnus Astro every 5 days. The most recent releases landed on October 5, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Bubble Level + Compass | Cygnus Astro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (34 ratings)](https://appshunter.io/ios/app/bubble-level-plus-compass/id1374372463/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/cygnus-astro/id6745795760/reviews) |
| Number of ratings | **34** | 2 |
| Positive reviews | **90.5% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 4 months | **Every 5 days** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 18 MB | 32 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dimitrios Kechagias](https://appshunter.io/developer/970157964) | [Christopher Ventura](https://appshunter.io/developer/1742045592) |

## What reviewers say

### Bubble Level + Compass

[App page](https://appshunter.io/ios/app/bubble-level-plus-compass/id1374372463)

This utility app provides a precise bubble level for horizontal, vertical, and surface angle measurements, along with a true-north compass. It offers advanced calibration options and works on iOS devices. A Pro version is available for additional features.

**Highlights:** Horizontal and vertical level measurements, Surface angle readings, True north compass, Advanced calibration, Magnetic declination reading, Accelerometer/Gyro switch

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

**In-app purchases:** none


### Cygnus Astro

[App page](https://appshunter.io/ios/app/cygnus-astro/id6745795760)

Control your astrophotography equipment remotely from your mobile device. This app provides a touch-friendly interface to connect, monitor, and manage your N.I.N.A. software and connected gear, simplifying your setup in the field.

**Highlights:** Remote equipment control, N.I.N.A. software integration, Mobile touch interface, Real-time exposure preview, Open-source and free

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Bubble Level + Compass free?

Bubble Level + Compass is free to download, with no in-app purchases.

### Is Cygnus Astro free?

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

### Which has better reviews, Bubble Level + Compass or Cygnus Astro?

Bubble Level + Compass is rated higher. Bubble Level + Compass averages 5.0 out of 5 from 34 ratings, while Cygnus Astro averages 4.5 from 2 ratings.

### Do Bubble Level + Compass or Cygnus Astro have ads?

Bubble Level + Compass shows ads; Cygnus Astro does not.

### Which is updated more often, Bubble Level + Compass or Cygnus Astro?

Bubble Level + Compass ships an update every 4 months, and Cygnus Astro every 5 days. Most recently, Bubble Level + Compass was updated on October 5, 2026 and Cygnus Astro on October 4, 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.*