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CLUSTER BEFORE-MATH-OPENING · 6 ENTRIES · EARLIEST ENTRY 2026-04-24

Cognitive-friction app blockers

This cluster consists of mobile app blockers that insert cognitive challenges (math, memory, or typing tasks) before allowing access to blocked apps, aiming to reduce compulsive scrolling. The dated entry history shows one new member per month from February to July 2026, a steady pace before the index began. Traction leaders are all at 0 stars, with Blob: Screen Time Control listed first, followed by HoldOn: Screen Time Nudge and PIM: App Blocker & Screen Time.

Entry timeline

ENTRY TIMELINE

FEB 2026: 1APR 2026: 1MAY 2026: 1JUN 2026: 1JUL 2026: 1AUG 2026: 1
FEB 2026AUG 2026

Each bar is the month a member carries, which is a creation date where the source published one and a crawl date otherwise. Nothing in the index was found before 11 August 2026, and coverage broadened sharply on 14–15 August, so a bar from then on reports how much we found that month, not how much was built; an earlier bar reports how far back a member's own source dated it — not how long we have been watching.

Members by activity

Activity signals, not revenue.

Build origin · 6 unlabelled

Operator · 6 unlabelled

Two labels per entry, never collapsed into one: how it was built, and who stands behind it. Counted over the 6 listed below. Unlabelled means nothing has decided yet — not that the answer is small.

  1. 01Blob: Screen Time Control0★17 daysliveMobile app that adds friction before opening distracting apps using math challenges and temporary unlock passes to curb mindless scrolling.
  2. 02HoldOn: Screen Time Nudge0★2 moliveMobile app that shows rotating nudges whenever the user opens distracting apps and tracks screen time to reduce mindless scrolling.
  3. 03PIM: App Blocker & Screen Time0★1 moliveApp blocker that adds cognitive tasks like typing or math problems before opening restricted apps, adding friction to curb mindless scrolling.
  4. 04Sentence: Screen Time Control0★3 moliveScreen time app that requires writing and scanning a handwritten sentence to unlock blocked apps, adding deliberate friction.
  5. 05DOOMSTARE: Reduce Screen Time0★2 moliveMobile app that interrupts mindless scrolling by showing users a moment of self-awareness after a set timer.
  6. 06Intention: Screen Time Control0★4 moliveMobile app that presents cognitive challenges, such as mental math or memory grids, before opening blocked apps to reduce compulsive scrolling.

Ranked by traction, highest first, and paged 20 at a time — this is a window on the cluster, never the whole of it. Ties are broken by a stable id so a product cannot appear on two pages or fall between them. Browse every cluster.