HN Digest

DATE ARCHIVE

2026-09-12

Articles published on 2026-09-12.

Screenshot showing the Mathy app tagline 'Mathy. Make math automatic.'
2026-09-12 · HN #49788014

Mathy App Aims to Build Math Automaticity Through Smart Practice Scheduling

Gabriel Antonio Mays created Mathy, a free iOS and web app that uses spaced repetition to help users maintain fluency in math topics they've already learned, focusing on automatic recall rather than new instruction.

2026-09-12 · HN #49737787

Chaos Computer Club Announces 40C3 Congress Under Theme 'Model Citizens'

The Chaos Computer Club invites participants to its 40th annual congress, 40C3, set for 27–30 December 2026 in Hamburg, with a focus on developing new societal models amid rising authoritarian tendencies.