Corebox vs Cairn

The light is going at the splitter shed and run 2 came up short again. Somewhere between the barrel and the tray rack, twelve centimetres of hole have gone missing — and whoever logs the night shift inherits the question. Corebox is a custody workbook for drill core. Record each run against its planned interval, each box against its shelf, each piece against its downhole depths and recovery. A deterministic integrity pass then walks the recorded coverage and shows exactly where the record disagrees with itself: unaccounted intervals, overlapping depths, pieces stored out of downhole order, pieces outside the run envelope, and sample codes tagged twice. Correct a depth in the piece register and the pass re-runs on the spot — you watch an overlap resolve, or a fresh gap open, the moment you save. Every move, correction, sample station, and invalidation is appended to a journal that never rewrites history; each entry carries a SHA-256 reference to the entry before it. Photo plates come in through Apple's system picker and sit beside the record as tappable thumbnails, and the whole case exports as sorted, readable JSON. Depth rail; run-and-box topology; searchable piece register; recovery percentages; sample stations; append-only custody journal; local JSON export. Your case lives entirely on the device in your pocket — nothing is transmitted anywhere, and the app draws no geological conclusions and certifies nothing.

Cairn counts down to the days you're waiting for, and counts up from the days you don't want to forget. Give it a date. It answers in days — 124 days to go, or 1,024 days since. Everything else gets out of the way. COUNTDOWN AND COUNT-UP, ONE MODEL • Days to go for anything ahead: a holiday, a trip, an exam, a due date • Days since anything behind: an anniversary, a baby's birth, the day you quit • Turn on minute precision when the hour matters — "3 days 4 hours", with seconds only in the final hour • Repeat yearly, monthly, weekly, every N days, or by the lunar calendar • Every event carries its own time zone, so flying across the world never shifts the number • Count only working days when a countdown is about business days • A date calculator for the days between two dates, or a date N days away — save the answer as an event • Pick up dates from a screenshot, a photo or a bit of text, and start a new event already filled in SEE WHERE IT STANDS • A countdown bar reads like a battery gauge: solid is what's left, full to empty • A count-up grid fills one square at a time, a day at a time • Milestones at 100, 365, 520, 1,000 and 1,314 days, marked right on the track • Ring, milestone track or heat grid — pick one per event, or just keep the number • A year view lays out all twelve months at once, so you can see which one is crowded; a month view lays them out day by day • Yearly events show which anniversary it is, and the day a countdown reaches zero gets a small celebration REMINDERS THAT ARRIVE ON TIME • Several reminders per event: days, weeks or months ahead, at the hour you choose • A daily digest each morning for what's today and what's this week • Live Activity and Dynamic Island for the last 24 hours • Time-sensitive delivery for the dates that shouldn't wait behind a Focus EVERYWHERE YOU LOOK • Home Screen widgets in small, medium and large: one event, a list, or a chart • Lock Screen widgets — inline, circular and rectangular — each pointed at the event you choose • An Apple Watch app and complications: circular, rectangular, inline and corner • A Control Center control for a new countdown in one tap • Ask Siri how long until anything, or find an event right from Spotlight • Share an event with family or friends: change the date and it changes for them too YOURS, AND ONLY YOURS • No account. Nothing to sign up for. • Syncs across iPhone, iPad and Mac through your own iCloud, and mirrors to Apple Watch from your iPhone • Import dates from Calendar and birthdays from Contacts — read only, never written back • Export everything to a single JSON file and import it back whenever you like; local snapshots and Recently Deleted bring back what you removed by mistake • App Lock asks for Face ID, Touch ID or your passcode when you come back • Cover photos with automatic tinting, six muted themes, categories, pinning, archiving and a share card • English, Simplified and Traditional Chinese, Japanese, Korean, German, Spanish, Brazilian Portuguese, French, Italian, Arabic, Persian, Hebrew, Thai, Dutch, Swedish, Norwegian Bokmål, Polish, Danish, Turkish, Vietnamese, Indonesian and Finnish — dates and month names included Cairn is free to download and keep up to 3 events. A one-time in-app purchase unlocks unlimited events. Previous users keep full access permanently; restore with the same Apple Account. No subscription, no ads, no tracking. A cairn is the pile of stones a trail keeps stacking to mark the way — one for every stretch you have walked.