UserAuthGuard vs Blocksi
Blocksi is a content filter and student monitor. It doesn't assign devices, run a repair queue, or tell you who has Chromebook #1234. UserAuthGuard manages the Chromebook fleet through Google Workspace — with patent-pending OU-Lock — and it's free for up to 100 devices.
The Short Version
Blocksi sells web filtering, classroom screen-monitoring, and 24/7/365 AI activity scanning. Useful as a filter — but per its own documentation it does inventory sync and a lost-device kiosk and nothing more of the lifecycle: no 1:1 device-to-student assignment, no check-in/check-out, no repair queue, no parts inventory, no asset tagging. You bought it for "Chromebook management"; it filters.
Pricing is quote-only. There is no free tier, and seats are licensed per role — you pay separately for Teacher, Admin, and Parent licenses on multi-year terms. Blocksi's primary Google Workspace Marketplace admin app sits at roughly 1.9 out of 5 and was last updated in June 2024. Its Chrome Web Store filter extension averages 2.5 out of 5.
UserAuthGuard is built around what Blocksi has no equivalent for: patent-pending OU-Lock, which binds each device to its Google Workspace OU and enforces that policy at the Workspace level — no agent in that security layer. On top of that sits the entire lifecycle Blocksi doesn't touch: 1:1 assignment with audit history, check-in/check-out, a full repair queue, parts inventory, and real-time Google Admin SDK sync. Free for up to 100 devices, with transparent public pricing above that.
What You're Actually Buying
One filters and monitors browser activity. The other manages the fleet.
A Filter & Student Monitor
"What is every student doing, all the time?"
- 🧾 Web/YouTube content filtering (90+ categories)
- 👁 Teacher screen-monitoring of every student tab
- 📢 24/7/365 AI scanning of student email & documents
- 🏠 Monitoring that continues outside school hours
- 📊 ~1.9★ admin app, last updated June 2024 (per public listing)
- 💰 Quote-only pricing, per-role licenses, multi-year lock-in
Workspace-Native Device Lifecycle Management
"Where are the devices, who has them, what shape are they in?"
- 📋 1:1 device-to-student assignment with full audit trail
- 🔒 Patent-pending OU-Lock — device-to-OU binding enforced by Google Workspace, no agent in that layer
- 🔄 Check-in / check-out with condition tracking
- 🔧 Full repair queue, parts inventory, technician workflow
- 📡 Real-time Google Admin SDK device sync
- 🎉 Free for up to 100 devices · transparent public pricing
Side By Side
Capabilities, architecture, privacy posture, and commercial terms — based on Blocksi's own documentation and public listings.
| Capability | UserAuthGuard | Blocksi |
|---|---|---|
| Device Lifecycle Management | ||
| 1:1 device-to-student assignment | ✓Full audit history | ✗Not in product docs |
| Check-in / check-out workflows | ✓Condition notes, QR | ✗ |
| Repair queue & technician workflow | ✓ | ✗ |
| Parts inventory & cost tracking | ✓ | ✗ |
| Asset tagging & lifecycle reporting | ✓ | ✗Inventory sync only |
| "Who has Chromebook #1234?" lookup | ✓Instant | ✗ |
| Security Model | ||
| Patent-pending OU-Lock (device-to-OU policy binding) | ✓Enforced by Google Workspace | ✗No equivalent |
| Device security enforced at the Workspace policy layer | ✓OU-Lock, no agent in that layer | ✗ |
| Real-time Google Admin SDK device sync | ✓ | ✗Inventory sync only |
| Student Privacy Posture | ||
| No AI scanning of student email & documents | ✓Not in our model | ✗Scans Workspace & Outlook content |
| No third-party human review of student content | ✓ | ✗Markets 24/7 human reviewers |
| No routine off-hours student monitoring | ✓Scoped to school use | ✗Documented after-hours tracking |
| Pricing & Contracts | ||
| Free plan available | ✓Up to 100 devices | ✗No free tier |
| Transparent public pricing | ✓ | ✗"Request a quote" only |
| Single price, not per-role licensing | ✓ | ✗Teacher/Admin/Parent priced separately |
| Cancel anytime | ✓ | ✗Multi-year terms |
| Product Health (public listings) | ||
| Admin app rating | ✓ | ✗~1.9★ Workspace Marketplace |
| Actively maintained | ✓ | ✗Marketplace app last updated Jun 2024 |
The Receipts
Every claim above is grounded in Blocksi's own materials, public app listings, and on-the-record reporting. Here's the evidence — numbered sources below.
"This blocks everything, from Educational websites to almost every single youtube video."
Recent reviews report Blocksi blocking Google Classroom, Clever, and even a Python download — on a tool schools buy to enable learning.
Google Workspace Marketplace reviews, May 2026 — source [2]
Blocksi's "Manager Education Everywhere" admin app sits at roughly 1.9 out of 5 on the Google Workspace Marketplace and was last updated June 2024. Its Chrome Web Store filter extension averages 2.5 out of 5.
Google Workspace Marketplace & Chrome Web Store listings — source [2], source [3]
"…allow[s] teachers to see analytics of every URL visited during class time and view every open tab on a student's computer screen," and tracks "the location of devices in which it's installed, even after school hours."
Student journalism, The Commander (Union City HS), Jan 2024 — source [4]
"Most students at Northwood were entirely unaware or knew little about the capabilities of Blocksi's live sessions" — citing a "lack of communication with parents and students in consenting to using Blocksi."
Student journalism, The Northwood Howler — source [5]
"Customize your pricing based on the number of users and your needs!"
Every tier on Blocksi's pricing page — Full Suite, Filtering, Classroom, Student Safety — routes to "Request a Quote." No public price exists, and there is no free tier.
blocksi.net/pricing — source [6]
Blocksi's own help documentation describes only Chromebook inventory sync from Google Workspace and a lost-device kiosk. There is no documented 1:1 device-to-student assignment, check-in/check-out, repair queue, parts inventory, or asset tagging — the core of fleet management.
Blocksi help documentation — source [1]
The Value Gap
Transparent and free to start — versus quote-gated, per-role, and locked in.
UserAuthGuard to start
Free for up to 100 devices, full device-management features, no credit card. Transparent public pricing above that.
Blocksi's price
Not published. Every plan is "Request a Quote," with no free tier and no public per-device or per-student number.
Seats you license
Blocksi prices Teacher, Admin, and Parent as separate paid products on multi-year terms. One product becomes three line items.
Platform, not a point tool
Filtering, 1:1 assignment, repair, inventory, and patent-pending OU-Lock security in one system — versus a filter you still pair with a separate asset and ticketing stack.
Frequently Asked Questions
What is the best Blocksi alternative for Chromebook management?
If your goal is managing the Chromebook fleet — knowing who has which device, tracking its condition, running repairs and inventory — UserAuthGuard is the direct alternative. Blocksi is a filtering and monitoring extension and, per its own documentation, does not provide 1:1 device-to-student assignment, check-in/check-out, a repair queue, or asset tagging. UserAuthGuard delivers all of that through Google Workspace, with patent-pending OU-Lock binding each device to its OU, transparent public pricing, and a free plan for up to 100 devices.
Does Blocksi manage my Chromebook fleet?
Not in the way an asset platform does. Blocksi's own documentation describes synchronizing your Chromebook inventory from Google Workspace and a lost-device kiosk mode. It does not document 1:1 device-to-student assignment, check-in/check-out, a repair queue, parts inventory, or asset tagging. If your goal is to know who has which device and what shape it's in, that is not what Blocksi is.
Is Blocksi free?
No. Blocksi has no free tier. Its pricing page lists no prices — every plan routes to "Request a Quote" — and seats are licensed per role (Teacher, Admin, Parent) on multi-year terms. UserAuthGuard is free for up to 100 devices with transparent public pricing above that.
Does Blocksi monitor students outside of school?
Blocksi markets 24/7/365 AI scanning of student activity, including content in Google Workspace and Outlook. Named student journalism has reported that monitoring continues "even after school hours" and that students were largely unaware and not meaningfully consented. UserAuthGuard's posture is narrower: it does not run a 24/7 AI dragnet over student email and documents, does not use third-party human reviewers of student content, and does not routinely monitor students off-hours.
How is UserAuthGuard's OU-Lock different from what Blocksi does?
Blocksi filters and monitors browser activity. UserAuthGuard's patent-pending OU-Lock works one layer down: it binds each Chromebook to its assigned Google Workspace organizational unit and enforces that at the Workspace policy level, so a device can't quietly drift out of the policies and assignment it's supposed to have. It's a device-governance capability Blocksi has no equivalent for — and it's the foundation the rest of the lifecycle (assignment, repair, inventory) is built on.
Should I replace Blocksi with UserAuthGuard?
If you bought Blocksi expecting device lifecycle management — assignment, accountability, repair, inventory — UserAuthGuard replaces it outright and adds patent-pending OU-Lock plus a narrower privacy posture. If you specifically need content filtering, evaluate that separately; just don't pay quote-only, per-role, multi-year pricing for fleet management you aren't actually getting.
Is UserAuthGuard really free?
Yes. The free plan supports up to 100 devices with full device-management features including 1:1 assignment, OU management, check-in/check-out, and repair tracking. No credit card required. Larger districts get transparent pricing and can request an Enterprise upgrade.
Sources
This page compares publicly available information as of May 2026. Claims about Blocksi are drawn from Blocksi's own website and support documentation, public app-store listings, and on-the-record student journalism. Ratings and listing dates change; figures reflect the cited sources at time of writing.
- Blocksi product & architecture overview — https://blocksi.net/, help.blocksi.net device management
- Google Workspace Marketplace — "Blocksi Manager Education Everywhere" listing (rating, review count, last-updated date) — listing
- Chrome Web Store — "Blocksi AI Web Filter" extension (rating, users) — listing
- The Commander, Union City HS — "Is Blocksi Digitally Stalking Me?", Jan 26 2024 — article
- The Northwood Howler — "Blocksi: Where Do We Draw the Line with School Surveillance?" — article
- Blocksi pricing page — blocksi.net/pricing
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