Kernel Focus

Other timers record how long you sat. Kernel records what you got done. One seed is one round of focus. While it runs, a crack spreads across the shell — that is the only progress there is. No ring, no bar, no percentage. When the crack runs out the shell splits: KRAK. It is the one sound this app ever makes. Then it asks the question the other timers never ask: what was the kernel? Forty words. Three pages. One section of the draft. That line is the point. The minutes were only how you got there. THE JAR Every seed you crack leaves a shell, and the shells drop into a jar. Fill it and the jar seals itself and goes onto the shelf. Shells go in and never come out — you can clear your records, but you cannot tidy them. PUT ONE DOWN AND IT STILL COUNTS Stop early and you get a dud: an empty shell. It goes into the jar like any other. No cross, no red, no sound. There are no streaks here, so there is nothing to break. WHAT IS IN IT • Six kinds of seed — one per thing you work on, each with its own length and its own unit: words, pages, problems, whatever you count. • A ledger you can actually read. Today's shells lie on the table; the week is seven piles you compare by height. • Home Screen and Lock Screen widgets, plus a Live Activity on the Lock Screen and in the Dynamic Island. • "Hey Siri, start focusing on Spanish" — through Shortcuts. • An alarm that sounds even on silent, and a Lock Screen field for logging the kernel without unlocking. • A one-line weekly note written on device by Apple Intelligence. It never goes online. • Optional Apple Health integration via HealthKit: save focus time as Mindful Minutes. Write-only, off by default; no health data is read. Calendar export is also optional and off by default. FREE AND PRO Cracking, recording kernels, the jar, and This Week are free for good, with three kinds of seed and 90 days of history. PRO adds unlimited kinds of seed, the full ledger, milestones, focus-quality trends, Calendar and CSV export, and a share card without a watermark. PRO is a one-time purchase — not a subscription. NO SERVER There is no account and no sign-up. Nothing is uploaded, because there is nowhere to upload it to. No analytics, no tracking, no third-party SDKs. Your ledger lives on your device and leaves only when you export it yourself.