Glass Guard vs Length Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Glass Guard
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Glass Guard helps you stay aware of nearby smart-glasses activity by scanning Bluetooth Low Energy (BLE) signals in real time. Use Glass Guard to: • Detect nearby devices that match smart-glasses signal patterns • Get instant alerts when potential devices are found • Review detailed detection history with signal strength and timestamps • View detection areas on a map (with location permission) • Adjust sensitivity and scan behavior to fit your environment Built for privacy: • No account required • Data stays on your device • No data selling Whether you’re commuting, studying, working, or in public spaces, Glass Guard gives you more visibility and control over your surroundings. Note: Detection is based on Bluetooth broadcasts and pattern matching, so results may vary by environment and device behavior.
Length Pro
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Length Pro turns your camera into a practical measuring tool for rooms, furniture, walls, frames, and everyday objects. Features: - Measure length with an AR ruler. - Check height and vertical distance quickly. - Outline surfaces and estimate area. - Use the digital level for alignment tasks. - Save snapshots and review measurements later. - Switch units to match your workflow. Subscription Information: Length Pro offers auto-renewable weekly, monthly, and yearly subscriptions for unlimited premium access. Payment is charged to your Apple Account at confirmation of purchase. Subscriptions renew automatically unless canceled at least 24 hours before the end of the current period. Your account will be charged for renewal within 24 hours before the end of the current period. Manage or cancel your subscription anytime in Account Settings after purchase. Terms of Use: https://doc-hosting.flycricket.io/lengthpro-terms-of-use/4b9926fd-e5f6-4842-af78-05c7202054be/terms Privacy Policy: https://doc-hosting.flycricket.io/lengthpro-privacy-policy/3057dfba-a47f-45f9-82a0-12dc2eb5289b/privacy
Screenshots
Verdict
The clearest difference is iOS requirement: Glass Guard at 15.0 against Length Pro's 17.0. On price 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
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
| Parameter | Glass Guard | Length Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 1.0 (1 ratings) — better | — |
| Number of ratings | 1 — better | — |
| Ads | — | No |
| In-app purchases | No | No |
| Devices | — | iPhone — better |
| Requires iOS | 15.0 — better | 17.0 |
| Further details — not scored | ||
| Size | 2 MB | 65 MB |
| Age rating | 4+ | 4+ |
| Developer | Sung Lee | ROKAS S.A. |
In-app purchases
Glass Guard
No in-app purchases
Length Pro
No in-app purchases









