Derrick: Oilfield Rotation

About

Derrick is the rotation calendar built for oilfield hands — and it actually keeps your hitch straight. Pick your rotation once (14/14, 14/7, 7/7, 21/21, 28/28, or a custom on/off), set the day your hitch starts, and Derrick paints your ON and OFF days correctly — for years. No drift. No "off by a day." No blank calendar when the new year rolls over. That sounds basic. It's the thing every other oilfield calendar gets wrong. NEW — Hitch Log and ticket wallet. Keep a record of every hitch — dates, rig, overtime and per-diem — with a year summary you can export as a spreadsheet or PDF for you and your preparer. And keep your tickets (H2S, BOSIET, TWIC, medicals) in one place, with expiry reminders and a check that they're valid through your hitch. CREW PASS — send your rotation to your crew or your spouse as a code and a QR. They scan or paste it and import your whole schedule in one tap — no re-typing dates, no getting a day wrong. Free, works offline, no account. FREE • Big, glanceable countdown — HOME IN __ DAYS / BACK IN __ DAYS • Today at a glance — "On hitch · Day 9 of 14" • Full month calendar with your ON/OFF days in color — scroll years ahead or back • Agenda of your upcoming hitches and time off, with exact dates • Crew Pass — share your rotation as a code/QR; your crew imports it in one tap • Home Screen & Lock Screen widgets • Crew-change reminders the evening before • Ticket wallet — keep one ticket with expiry reminders • Day & night shifts • Works offline on the rig or at sea. No account, no sign-up. DERRICK PRO — one-time unlock (no subscription) • Whole year on one page — export a clean, printable PDF (one year per page, not 12 separate months) • Plan your life around your hitch — add birthdays, weddings, hunting season, the kids' games, and see instantly whether you'll be home or working • Estimate your pay — day rate or hourly + overtime, per-diem, in your currency (USD, CAD, GBP, AUD, NOK, EUR & more) • Hitch Log — a record of every hitch (dates, rig, overtime, per-diem) with a year summary; export it as a spreadsheet or PDF • Unlimited tickets in your wallet, each checked against your hitch • Pro widgets — a full-month rotation grid, and your next crew change beside this hitch's estimated pay Buy Pro once and keep it. No subscriptions. No ads. Crew change shouldn't be this hard to track. Now it isn't.