Hubble Connect vs Pixel Ruler Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Test device connectivity
- Hubble Network integration
- Terrestrial network testing
- Closed-loop development
- Device broadcasting monitoring
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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.
Pixel Ruler Pro
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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
Verdict
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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly monthly. The most recent releases landed on September 18, 2026 and September 21, 2026 respectively.
| Parameter | Hubble Connect | Pixel Ruler Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (6 ratings) — better | — |
| Number of ratings | 6 — better | — |
| Update frequency | Monthly | Monthly |
| Ads | No — better | Yes |
| In-app purchases | No | No |
| Monetization | Free | — |
| Devices | iPhone | iPhone |
| Requires iOS | 16.0 — better | 18.0 |
| Further details — not scored | ||
| Size | 39 MB | 43 MB |
| Age rating | 4+ | 4+ |
| Developer | Hubble Network | MIZOU, CO., LTD. |
In-app purchases
Hubble Connect
No in-app purchases
Pixel Ruler Pro
No in-app purchases
Questions
Is Hubble Connect free?
Is Pixel Ruler Pro free?
Do Hubble Connect or Pixel Ruler Pro have ads?
Which is updated more often, Hubble Connect or Pixel Ruler Pro?
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