Comparison

Bubble Level + Compass Pro vs Markdown Editor

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

Markdown Editor

Features
Read full description

Markdown should be easy to read and easy to edit. Linen is a clean markdown reader and editor built for that. Open a note and you get a calm writing surface on one side and a beautiful preview on the other. No clutter. No noise. Just your words, formatted the way markdown was meant to look. Read and write with clarity • Clean monospaced editor for focused writing • Live preview that renders GitHub Flavored Markdown beautifully • Headings, lists, tasks, tables, code blocks, and links done right • On Mac: read and edit side by side with Linen Pro A reader that respects the text • Serif preview typography that feels like a finished document, not raw syntax soup • Warm, minimal design that stays out of your way • Light and dark mode that keeps reading comfortable Stay organized • Nested folders for notes that actually have a home • Search and sort to find anything fast • Import, paste, or start fresh from templates Share and export • Export markdown, or use Linen Pro to export HTML and PDF • Open .md files, drag them in, or paste from clipboard Linen is for people who write in markdown and want an app that treats it like real reading material, not a developer utility buried in menus. Write cleanly. Read beautifully. That is the whole point. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Bubble Level + Compass Pro4 screens
Markdown Editor3 screens

Verdict

The call

The clearest difference is price: Markdown Editor at Free against Bubble Level + Compass Pro's $0.99. Markdown Editor also leads on update cadence (every 2 months vs every 17 months). Bubble Level + Compass Pro's advantage is in-app purchases (none vs 2) and iOS requirement (12.0 vs 18.0). On ads and device support 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

Markdown Editor is free to download; Bubble Level + Compass Pro costs $0.99 up front. Markdown Editor sells 2 in-app purchases, starting at $9.99 per 7 days. Bubble Level + Compass Pro asks for nothing beyond the download.

UpkeepUpdate frequency

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

Scorecard4 real differences · 6 level
Bubble Level + Compass Pro versus Markdown Editor: the parameters behind the verdict, then further details
ParameterBubble Level + Compass ProMarkdown Editor
Price$0.99Free — better
Rating5.0 (22 ratings) — better—
Positive reviews100.0% of reviews—
Number of ratings22 — better—
Update frequencyEvery 17 monthsEvery 2 months — better
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaid—
DevicesiPhone, iPad, iPod, Apple Watch — betteriPhone, iPad, Mac
Requires iOS12.0 — better18.0
Further details — not scored
Size7 MB14 MB
Age rating4+4+
DeveloperDimitrios KechagiasCtrl Alt Go Ltd

In-app purchases

None

Bubble Level + Compass Pro

No in-app purchases

2 purchases

Markdown Editor

Subscriptions1
  • Pro Weekly3 Days trial$9.997 Days
One-time1
  • Pro Lifetime$34.99

Questions

Is Bubble Level + Compass Pro free?
Bubble Level + Compass Pro costs $0.99, with no in-app purchases.
Is Markdown Editor free?
Markdown Editor is free to download, with in-app purchases available.
Do Bubble Level + Compass Pro or Markdown Editor have ads?
Neither Bubble Level + Compass Pro nor Markdown Editor shows ads.
Which is updated more often, Bubble Level + Compass Pro or Markdown Editor?
Bubble Level + Compass Pro ships an update every 17 months, and Markdown Editor every 2 months. Most recently, Bubble Level + Compass Pro was updated on October 10, 2026 and Markdown Editor on October 1, 2026.

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