Comparison

Hubble Connect vs Pixel Ruler Pro

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

Head to head
About

Hubble Connect

Test device connectivity on the Hubble Network. Broadcasted devices registered to your organization appear for closed-loop development. Facilitates seamless integration and testing of new hardware.

Highlights
  • Test device connectivity
  • Hubble Network integration
  • Terrestrial network testing
  • Closed-loop development
  • Device broadcasting monitoring
Features
Read full description

The Hubble Network mobile app will allow you to test device connectivity on our Terrestrial network. Any device successfully broadcasting on the Hubble protocol and registered with your organization will appear for closed-loop development.

About

Pixel Ruler Pro

Features
Read full description

Measure any pixel on screen with pinpoint accuracy. Detect UI elements instantly with AI. Pick colors in HEX, RGB, and HSL — all in one tool. Pixel Ruler is the essential companion for designers, developers, and anyone who cares about pixel-perfect precision. Whether you're checking spacing between elements, identifying colors, or analyzing UI layouts, Pixel Ruler streamlines your workflow. KEY FEATURES: • AI-Powered Element Detection — Automatically recognize UI components using on-device machine learning. No internet required. • Precision Pixel Measurement — Measure distances, widths, and heights down to the exact pixel. Drag rulers across any screen content. • Smart Spacing Analysis — Instantly measure gaps between detected elements. Perfect for verifying design specs and layout consistency. • Advanced Color Picker — Tap any pixel to grab its color in HEX, RGB, or HSL format. Copy values with a single tap. • On-Device Processing — All detection and measurement happens locally on your device using CoreML. Your screenshots stay private. • Clean, Focused Interface — A minimal UI that stays out of your way so you can focus on what matters: the details. BUILT FOR PROFESSIONALS: Pixel Ruler is designed for UI/UX designers reviewing mockups, front-end developers verifying implementations, QA engineers catching visual regressions, and product managers who demand visual precision. Import screenshots or capture directly from your screen, then measure, detect, and pick colors — all without leaving the app.

Screenshots

Hubble Connect4 screens
Pixel Ruler Pro2 screens

Verdict

The call

The clearest difference is ads: Hubble Connect at none against Pixel Ruler Pro's shown. Hubble Connect also leads on iOS requirement (16.0 vs 18.0). On price, update cadence, in-app purchases 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

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 18, 2026 and September 21, 2026 respectively.

Scorecard2 real differences · 7 level
Hubble Connect versus Pixel Ruler Pro: the parameters behind the verdict, then further details
ParameterHubble ConnectPixel Ruler Pro
PriceFreeFree
Rating5.0 (6 ratings) — better—
Number of ratings6 — better—
Update frequencyMonthlyMonthly
AdsNo — betterYes
In-app purchasesNoNo
MonetizationFree—
DevicesiPhoneiPhone
Requires iOS16.0 — better18.0
Further details — not scored
Size39 MB43 MB
Age rating4+4+
DeveloperHubble NetworkMIZOU, CO., LTD.

In-app purchases

None

Hubble Connect

No in-app purchases

None

Pixel Ruler Pro

No in-app purchases

Questions

Is Hubble Connect free?
Hubble Connect is free to download, with no in-app purchases.
Is Pixel Ruler Pro free?
Pixel Ruler Pro is free to download, with no in-app purchases.
Do Hubble Connect or Pixel Ruler Pro have ads?
Pixel Ruler Pro shows ads; Hubble Connect does not.
Which is updated more often, Hubble Connect or Pixel Ruler Pro?
Hubble Connect ships an update monthly, and Pixel Ruler Pro monthly. Most recently, Hubble Connect was updated on September 18, 2026 and Pixel Ruler Pro on September 21, 2026.

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