Sigma Vision is the better HardStop alternative when the job is a Windows or Mac computer. HardStop is a phone-first, all-device filter with uninstall friction. Sigma Vision is desktop only: it blocks known adult sites, watches what actually hits the screen with on-device AI, then locks the session if warnings are ignored.
This page is for people who already know HardStop and need a computer tool. Sigma Vision does not run on iPhone or Android. Do not buy it for a phone. Verify HardStop’s current phone claims on tryhardstop.com.
HardStop vs Sigma Vision
| HardStop | Sigma Vision | Who wins this job | |
|---|---|---|---|
| Windows and Mac | Yes, as part of a wider device pitch | Yes. The entire product | Sigma Vision |
| iPhone / iPad | Yes. Central to the pitch | No | HardStop |
| After explicit content is on screen | Filter so listed destinations do not load | Blocklist + on-screen AI + optional lock of screen, keyboard, mouse, and voice | Sigma Vision |
| Uninstall wait / cannot-cheat story | Wait period and guarantee language | System-level lockout on that PC | Different jobs |
| Accountability partner | No | No | Tie |
Why Sigma Vision wins on the computer
A domain list fails when the file is local, the player is already open, or the site was never on the list. Sigma Vision scores what appeared on the display. If you set a warning limit, the computer locks. That is the desktop job: how Sigma Vision works.
Plans start at 3,99 € per month. See plans.
If the leak is only a phone
Sigma Vision is the wrong product. It will not cover iPhone or Android. This page is not a recommendation to stack two vendors. Pick the device that actually leaks, then pick the tool that owns that device.
FAQ
Is Sigma Vision a HardStop clone?
No. Same pain: you cannot rely on willpower. Different scope. HardStop is the all-device filter and uninstall-friction story. Sigma Vision is Windows and Mac lockout after on-screen detection.
Which is harder to bypass?
On iPhone, that is HardStop’s claim to verify on their site. On a Windows or Mac PC where the failure is “I opened something that was not on a list,” Sigma Vision’s on-screen layer plus lockout is the test that matters. No vendor should claim infinity.
Should I use both?
No as a default. Buy the job. If the computer is the problem, install Sigma Vision there.
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