# Bubble Level + Compass Pro vs SynScan

The clearest difference is review sentiment: Bubble Level + Compass Pro at 100% against SynScan's 22%. Bubble Level + Compass Pro also leads on rating (5.0 vs 3.3) and iOS requirement (12.0 vs 14.0). SynScan's advantage is price (Free vs $0.99) and update cadence (every 2 months vs every 17 months). On ratings volume, ads, in-app purchases and device support there is nothing between them.

SynScan 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 3.3. Both are backed by a comparable volume of ratings — 22 and 8 respectively. Written reviews point the same way: 100% of Bubble Level + Compass Pro's written reviews are positive against 22% of SynScan's.

Bubble Level + Compass Pro ships an update every 17 months, SynScan every 2 months. The most recent releases landed on September 10, 2026 and June 1, 2026 respectively.

## The numbers

| Metric | Bubble Level + Compass Pro | SynScan |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | **[5.0 (22 ratings)](https://appshunter.io/ios/app/bubble-level-plus-compass-pro/id988590222/reviews)** | [3.3 (8 ratings)](https://appshunter.io/ios/app/synscan/id1243086631/reviews) |
| Number of ratings | **22** | 8 |
| Positive reviews | **100.0% of reviews** | 22.2% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 17 months | **Every 2 months** |
| Monetization | Paid | **Free** |
| Size | 7 MB | 46 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | **iPhone, iPad, iPod, Apple Watch** | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dimitrios Kechagias](https://appshunter.io/developer/970157964) | [Astropower Technology Co. Ltd.](https://appshunter.io/developer/1787940478) |

## 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


### SynScan

[App page](https://appshunter.io/ios/app/synscan/id1243086631)

Control motorized telescope mounts for celestial object tracking and exploration. Features include GOTO functionality, object catalogs, and gamepad navigation. Ideal for novice users with alt-azimuth mounts.

**Highlights:** Control telescope mount slew, align, GOTO, and track, Point and Track celestial objects, Support gamepad navigation, Browse and save celestial object catalogs, Third-party app integration (ASCOM, SkySafari, Stellarium), Emulator mount for testing

**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 SynScan free?

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

### Which has better reviews, Bubble Level + Compass Pro or SynScan?

Bubble Level + Compass Pro is rated higher. Bubble Level + Compass Pro averages 5.0 out of 5 from 22 ratings, while SynScan averages 3.3 from 8 ratings.

### Do Bubble Level + Compass Pro or SynScan have ads?

Neither Bubble Level + Compass Pro nor SynScan shows ads.

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

Bubble Level + Compass Pro ships an update every 17 months, and SynScan every 2 months. Most recently, Bubble Level + Compass Pro was updated on September 10, 2026 and SynScan on June 1, 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.*