Comparison

Bubble Level + Compass Pro vs Touch

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Bubble Level + Compass Pro

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
Read full description

Bubble Level + Compass Pro combines a precise spirit level, compass, and Apple Watch companion app, so when your phone is placed somewhere hard to see its screen, you can still get live readings from your wrist. No more out-of-reach setups, and no more crouching. Features: • Bullseye level plus horizontal and vertical levels with 0.1 degree precision • Bubble level units: Angle (degrees) or Incline/Slope (%) • True and magnetic heading with direction text • Magnetic declination • Apple Watch companion app • Gyro or accelerometer sensor mode • Gyro calibration offset to compensate for camera bulge or uneven phone cases • Pitch/Roll/Yaw rotation rate readouts • Compass calibration status • Red-light night mode The tool is normally included in my astronomical app (Polar Scope Align Pro), but I decided to release it as a separate app because I could not find anything with the features I wanted on the app store. (A free ad-supported version is also available)

About

Touch

Control your astrophotography sessions remotely from your mobile device or Mac. Manage imaging, focus, guiding, and polar alignment. This open-source tool enhances your workflow without ads or in-app purchases.

Highlights
  • Remote imaging session launch
  • Focus control
  • Guiding performance monitoring
  • Three Point Polar Alignment
  • Connected device control
  • Open source
Features
Read full description

Touch-N-Stars brings the core features of the popular astrophotography software N.I.N.A. right to your phone, tablet, or Apple Silicon Mac. Start imaging sessions, adjust focus, monitor guiding, or perform a Three Point Polar Alignment – all from the palm of your hand. Key Features: - Launch imaging sessions and control focus remotely - Monitor guiding performance in real time - Perform Three Point Polar Alignment (requires N.I.N.A. v2.2.2.0+) - Control all connected devices such as the dome or flat panel - 100% open source. No ads. No in-app purchases. Requirements: - A running N.I.N.A. instance on your imaging PC - Advanced API Plugin enabled (Port 1888, API v2) - Touch'N'Stars Plugin Touch-N-Stars is a companion tool – not a full replacement for the desktop experience. Enhance your astrophotography workflow and stay flexible – wherever you are.

Screenshots

Bubble Level + Compass Pro4 screens
Touch4 screens

Verdict

The call

The clearest difference is price: Touch at Free against Bubble Level + Compass Pro's $0.99. Touch also leads on update cadence (fortnightly vs every 17 months). Bubble Level + Compass Pro's advantage is device support (4 vs 2) and ratings volume (22 vs 6). On rating, review sentiment, ads and in-app purchases there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Touch 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.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Bubble Level + Compass Pro against 5.0 for Touch. Both are backed by a comparable volume of ratings — 22 and 6 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Bubble Level + Compass Pro ships an update every 17 months, Touch fortnightly. Both last shipped on September 10, 2026.

Scorecard6 real differences · 4 level
Bubble Level + Compass Pro versus Touch: the parameters behind the verdict, then further details
ParameterBubble Level + Compass ProTouch
Price$0.99Free — better
Rating5.0 (22 ratings)5.0 (6 ratings)
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings22 — better6
Update frequencyEvery 17 monthsFortnightly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad
Requires iOS12.0 — better16.6
Further details — not scored
Size7 MB45 MB
Age rating4+4+
DeveloperDimitrios KechagiasJohannes Maier

Customer experience

Bubble Level + Compass Pro

All ratings22 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews13 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Touch

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Bubble Level + Compass Pro

No in-app purchases

None

Touch

No in-app purchases

Questions

Is Bubble Level + Compass Pro free?
Bubble Level + Compass Pro costs $0.99, with no in-app purchases.
Is Touch free?
Touch is free to download, with no in-app purchases.
Which has better reviews, Bubble Level + Compass Pro or Touch?
Bubble Level + Compass Pro and Touch are both rated 5.0 out of 5 on the App Store, from 22 and 6 ratings respectively.
Do Bubble Level + Compass Pro or Touch have ads?
Neither Bubble Level + Compass Pro nor Touch shows ads.
Which is updated more often, Bubble Level + Compass Pro or Touch?
Bubble Level + Compass Pro ships an update every 17 months, and Touch fortnightly. Most recently, Bubble Level + Compass Pro was updated on September 10, 2026 and Touch on September 10, 2026.

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