Cloister
Block websites on Mac, apps and sites on iPhone and iPad
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Cloister blocks websites on your Mac until the timer ends, with no Stop button: quitting it, the clock and a restart don't end a session. On iPhone, iPhone Duo and iPad it blocks apps and websites, with Screen Time. No account. Mac: one-time purchase.
PH · launched Nov 8, 2026 · 3 upvotes (top 7%) · 0 views
Niche: distraction and screen time blockers · 257 launches, 30 in the last 7 days ▲ +7% · Explore this niche →
Category and tags
- Horizontal
- B2C
- Not AI
- Commercial product
- iOS
- Productivity
- Menu Bar Apps
Visit website ↗ Source listing ↗
More like this: all 257 launches in distraction and screen time blockers →
Could you build this?
Partial The Mac website blocker with an unkillable timer is codeable. Making it tamper-resistant and integrating iPhone/iPad app blocking through Apple's Screen Time APIs needs platform-specific expertise and entitlements.
What it would actually take: The Mac side needs a privileged launch daemon, hosts-file or network-extension filtering, and persistence that survives quitting and restarts. The iOS side uses FamilyControls and ManagedSettings, which require Apple's entitlement approval. Building it requires native Swift and macOS system-level knowledge, and Apple's approval process for the entitlement.
Competitors
Other products that read as similar to this one : 535 launches clear the similarity bar, closest 8 shown.
Attention rank: #68 of 536 (itself plus its competitors, highest first, normalized so YC and Product Hunt are compared fairly).
Launched 304 days after the earliest competitor.
- Pause App Blocker · ph · 2026-10-28 · 1 upvotes · similarity 0.64
- Blocker · ph · 2026-09-07 · 3 upvotes · similarity 0.62
- attention awareness · ph · 2026-10-12 · 2 upvotes · similarity 0.61
- The Blocker · ph · 2026-10-25 · 1 upvotes · similarity 0.60
- cantscroll · ph · 2026-09-14 · 2 upvotes · similarity 0.57
- Moat · ph · 2026-10-26 · 1 upvotes · similarity 0.57
- Calma · ph · 2026-10-20 · 1 upvotes · similarity 0.56
- Unflurry · ph · 2026-10-21 · 3 upvotes · similarity 0.56
The niche, labels, vibe code rating and competitor comparison on this page are analysis by Nicheloom. If you use them, please credit nicheloom.com. How you may use our data.