# StellarMate vs Bubble Level + Compass

The clearest difference is review sentiment: Bubble Level + Compass at 90% against StellarMate's 33%. Bubble Level + Compass also leads on rating (5.0 vs 3.0) and iOS requirement (12.0 vs 15.1). StellarMate's advantage is ads (none vs shown) and update cadence (every 8 days vs every 4 months). On price, ratings volume, 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 3.0. Both are backed by a comparable volume of ratings — 23 and 34 respectively. Written reviews point the same way: 33% of StellarMate's written reviews are positive against 90% of Bubble Level + Compass's.

StellarMate ships an update every 8 days, Bubble Level + Compass every 4 months. The most recent releases landed on October 15, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | StellarMate | Bubble Level + Compass |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (23 ratings)](https://appshunter.io/ios/app/stellarmate/id1252626058/reviews) | **[5.0 (34 ratings)](https://appshunter.io/ios/app/bubble-level-plus-compass/id1374372463/reviews)** |
| Number of ratings | 23 | **34** |
| Positive reviews | 33.3% of reviews | **90.5% of reviews** |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | **Every 8 days** | Every 4 months |
| Monetization | **Free** | Free with in-app purchases |
| Size | 114 MB | 18 MB |
| Requires iOS | 15.1 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Ikarus Astronomy Company For Scientific Instruments & Tools](https://appshunter.io/developer/1252626057) | [Dimitrios Kechagias](https://appshunter.io/developer/970157964) |

## What reviewers say

### StellarMate

[App page](https://appshunter.io/ios/app/stellarmate/id1252626058)

Control your astrophotography equipment remotely. Capture images, stream video, and perform precise alignment. Automatically back up your photos to the cloud with rich metadata for easy searching.

**Highlights:** Remote equipment control, Image capture and video streaming, Polar alignment assistant, Cloud image backup, Metadata search and sorting, Software updates

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

**In-app purchases:** none


### 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


## Frequently asked questions

### Is StellarMate free?

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

### Is Bubble Level + Compass free?

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

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

Bubble Level + Compass is rated higher. StellarMate averages 3.0 out of 5 from 23 ratings, while Bubble Level + Compass averages 5.0 from 34 ratings.

### Do StellarMate or Bubble Level + Compass have ads?

Bubble Level + Compass shows ads; StellarMate does not.

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

StellarMate ships an update every 8 days, and Bubble Level + Compass every 4 months. Most recently, StellarMate was updated on October 15, 2026 and Bubble Level + Compass on October 5, 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.*