# Derrick: Oilfield Rotation — Hitch calendar & crew change > Oilfield rotation calendar for accurate tracking of work and time off. (iPhone/iPad app by Vytautas Jazbutis.) - Source: https://appshunter.io/ios/app/derrick-oilfield-rotation/id6780036699 (this page in markdown: same URL + `.md`) - Developer: [Vytautas Jazbutis](https://appshunter.io/developer/1829284015) - Category: Productivity, Business - Price: Free with in-app purchases - Rating: 5.00/5 from 2 App Store ratings - Age rating: 4+ - Requires: iOS 17.0 · 4 MB - Languages: American English - Released: 2026-06-17 - Data updated: 2026-08-20 - Monetization: freemium - User reviews in markdown: https://appshunter.io/ios/app/derrick-oilfield-rotation/id6780036699/reviews.md ## What is Derrick? 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 — 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, 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 • Day & night shifts • 100% offline. No account, no sign-up, nothing leaves your phone. 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 • Track your money — pay, per-diem, days worked & overtime, in your currency (USD, CAD, GBP, AUD, NOK, EUR & more) Buy Pro once and keep it. No subscriptions. No ads. No data collection. Crew change shouldn't be this hard to track. Now it isn't. ## Key features - Accurate rotation tracking for years - Glanceable countdowns and daily summaries - Full-month calendar with color-coded days - Crew Pass for easy schedule sharing - Home and lock screen widgets - Offline functionality - Financial tracking for pay and per-diem ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Derrick Pro — Lifetime | $29.99 | one-time | ## Frequently asked questions about Derrick ### How does Derrick handle different rotation schedules? Derrick allows you to pick your rotation once, such as 14/14, 14/7, or custom on/off periods, and it will accurately paint your ON and OFF days for years without drift or errors, even across new year rollovers. ### Can I share my schedule with my crew using Derrick? Yes, Derrick features 'Crew Pass' which lets you send your rotation to your crew or family as a code or QR. They can then import your entire schedule with a single tap, eliminating the need for re-typing dates. ### Does Derrick require an account or internet connection? No, Derrick is 100% offline and does not require an account or sign-up. Nothing leaves your phone, ensuring your data remains private. ### What features are included in Derrick Pro? Derrick Pro, available as a one-time unlock, offers a full-year view on one page exportable as a PDF, the ability to plan personal events around your hitch, and detailed financial tracking for pay, per-diem, and days worked in various currencies. ### How often is Derrick updated? The latest version, 1.2.0, was last updated on July 11, 2026. Updates aim to improve reliability and add features based on user needs. ### What devices does Derrick support? Derrick is currently supported on iPhone devices. ### What is the age rating for Derrick? Derrick has an age rating of 4+, making it suitable for a wide range of users. ### Does Derrick have ads? No, Derrick is ad-free. The developer explicitly states 'No ads' for both the free and Pro versions. ## Version history (last 4 releases) ### 1.3.0 — 2026-07-29 What's new in 1.3 • My Crew keeps your rotation and adds one spouse or crewmate from their Crew Pass — no more replacing your own schedule. • See both schedules together and the next day you're both home, all offline. • Free, private, and fully offline — no account or subscription. ### 1.2.0 — 2026-07-11 What's new in 1.2 • Crew Pass — send your actual rotation to your crew or your spouse as a code and a QR. They scan or paste it and import the whole schedule in one tap — no re-typing dates. Free, offline, no account. • Fixed the custom-rotation controls so your on/off numbers are always visible while you set them. • Pro price now shows in your local currency in Settings. • Faster, smoother year-card sharing. • A fresh, bolder app icon. Thanks for the reviews and requests — keep them coming. ### 1.1.0 — 2026-07-08 What's new in 1.1 • Share your rotation — send your schedule to your crew, your spouse, or the boss in a tap (Derrick Pro). • Whole year on one page — export a clean, printable PDF: your entire year on a single page, not 12 scattered months (Derrick Pro). • Reliability and speed polish under the hood. Thanks for the reviews and feature requests — keep them coming. ### 1.0 — 2026-06-17 No release notes. ## More apps by Vytautas Jazbutis - [DecodeRX: Drug-Gene Guide](https://appshunter.io/ios/app/decoderx-drug-gene-guide/id6761329929) - [VoxRate: Voice Score & Coach](https://appshunter.io/ios/app/voxrate-voice-score-and-coach/id6761403143) - [LuckCast](https://appshunter.io/ios/app/luckcast/id6761408144) - [RenterShield: Tenant Rights](https://appshunter.io/ios/app/rentershield-tenant-rights/id6761546103) - [HifzPath: Quran Memorization](https://appshunter.io/ios/app/hifzpath-quran-memorization/id6761689759) - [Eulogia: Eulogy Speech Writer](https://appshunter.io/ios/app/eulogia-eulogy-speech-writer/id6761786260) All apps by Vytautas Jazbutis: https://appshunter.io/developer/1829284015 --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-20.*