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Derrick: Oilfield Rotation
Hitch calendar & crew change
Only for iPhone
Free · In‑App Purchases · Designed for iPhone. Not verified for macOS.
iPhone
New: Hitch Log — every hitch on record, exported for you and your preparer. Plus a ticket wallet with expiry reminders and new Pro widgets.
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.
Ratings & Reviews
• Hitch Log (Pro): confirm each finished hitch, log overtime, per-diem and rig, and export the year as a spreadsheet or PDF.
• Ticket wallet: keep H2S, BOSIET, TWIC and medicals with expiry reminders — and see if they're valid through this hitch. One ticket free, unlimited with Pro.
• New Pro widgets: a full-month rotation grid, and your next crew change beside this hitch's estimated pay.
• Fixes: taps no longer get missed after closing a sheet, and dates now show correctly on phones set to a non-Gregorian calendar.
The developer, Vytautas Jazbutis, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Used to Track You
The following data may be used to track you across apps and websites owned by other companies:
- Purchases
- Identifiers
- Usage Data
Data Linked to You
The following data may be collected and linked to your identity:
- Purchases
- Identifiers
- Usage Data
The developer indicated that this app supports the following accessibility features. Learn More
Information
- Seller
- Vytautas Jazbutis
- Size
- 15.7 MB
- Category
- Productivity
- Compatibility
Requires iOS 17.0 or later.
- iPhone
Requires iOS 17.0 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 1.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- Derrick Pro — Lifetime $29.99
- Copyright
- © 2026 Evelaina