# Bubble Level + Compass Pro vs Cygnus Astro

The clearest difference is price: Cygnus Astro at Free against Bubble Level + Compass Pro's $0.99. Cygnus Astro also leads on update cadence (every 5 days vs every 17 months). Bubble Level + Compass Pro's advantage is rating (5.0 vs 4.5) and review sentiment (100% vs 67%). On ads, in-app purchases and device support there is nothing between them.

Cygnus Astro is free to download; Bubble Level + Compass Pro costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Bubble Level + Compass Pro holds the better App Store score, 5.0 against 4.5. That said, the two scores are not equally well evidenced: Bubble Level + Compass Pro has 22 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 100% of Bubble Level + Compass Pro's written reviews are positive against 67% of Cygnus Astro's.

Bubble Level + Compass Pro ships an update every 17 months, Cygnus Astro every 5 days. The most recent releases landed on September 10, 2026 and June 4, 2026 respectively.

## The numbers

| Metric | Bubble Level + Compass Pro | Cygnus Astro |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (22 ratings)](https://appshunter.io/ios/app/bubble-level-plus-compass-pro/id988590222/reviews)** | [4.5 (2 ratings)](https://appshunter.io/ios/app/cygnus-astro/id6745795760/reviews) |
| Number of ratings | **22** | 2 |
| Positive reviews | **100.0% of reviews** | 66.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 5 days** |
| Monetization | Paid | **Free** |
| Size | 7 MB | 32 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | 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 Pro

[App page](https://appshunter.io/ios/app/bubble-level-plus-compass-pro/id988590222)

This utility app provides a precise spirit level and compass for your iPhone and Apple Watch. Get live readings on your wrist, even when your phone's screen is out of sight. Features include bullseye, horizontal, and vertical levels with 0.1-degree precision.

**Highlights:** Bullseye, horizontal, and vertical levels, 0.1-degree precision, True and magnetic heading, Apple Watch companion app, Gyro or accelerometer sensor mode, Red-light night mode

**Features:** Apple Watch app, 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 Pro free?

Bubble Level + Compass Pro costs $0.99, 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 Pro or Cygnus Astro?

Bubble Level + Compass Pro is rated higher. Bubble Level + Compass Pro averages 5.0 out of 5 from 22 ratings, while Cygnus Astro averages 4.5 from 2 ratings.

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

Neither Bubble Level + Compass Pro nor Cygnus Astro shows ads.

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

Bubble Level + Compass Pro ships an update every 17 months, and Cygnus Astro every 5 days. Most recently, Bubble Level + Compass Pro was updated on September 10, 2026 and Cygnus Astro on June 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.*