--- schema_type: "SoftwareApplication" entity_type: "Mobile Application" app_name: "Derrick: Oilfield Rotation" developer_entity: "Vytautas Jazbutis" bundle_id: "com.evelaina.derrick" app_store_id: "6780036699" category: "Productivity" primary_platform: "ios" primary_monetization: "Freemium" offline_capable: false market_region: "US" platforms: "iOS" app_last_updated: "2026-09-07" report_date: "2026-09-18" last_verified: "2026-09-18T00:00:00.000Z" report_version: "1.4.1" total_reviews: 21 overall_rating: 4.8 confidence: "low" confidence_score: 0.2 data_age_days: 12 momentum_velocity: "maintenance" intelligence_version: 2 tags: ["productivity", "freemium", "mobile app", "app review", "app analysis", "oilfield", "workers", "require"] canonical_url: "https://marlvel.ai/apps/derrick-oilfield-rotation" license: "CC-BY-NC 4.0" content_version: "v2" --- # Derrick: Oilfield Rotation Intelligence Report ## TL;DR {#tldr} - **Category**: Productivity · Freemium - **Signal**: Rating 4.76 > **TL;DR:** Derrick: Oilfield Rotation is a productivity app by Vytautas Jazbutis, rated 4.76/5 by 21 users, available on iOS. > > **Marlvel.ai App Intelligence** - Independent analysis. US Market. No publisher influence. > **Key Insight:** Derrick: Oilfield Rotation is a productivity app by Vytautas Jazbutis. ## Quick Facts | Fact | Value | | :--- | :--- | | **Rating** | 4.76/5 (21 reviews) | | **Category** | Productivity | | **Developer** | Vytautas Jazbutis | | **Pricing** | Freemium | | **Platforms** | iOS | | **Confidence** | Low (0.2/1.0) | | **Data Age** | 12d | ## Metadata & Market Performance - **Publisher:** Vytautas Jazbutis - **Category:** Productivity - **Target Audience:** Oilfield workers who require precise, offline-capable scheduling tools to manage complex hitch rotations and financial planning. - **Platforms:** iOS - **Version Reviewed:** 1.4.1 - **Report Date:** 2026-09-18 - **Signal Count:** 0 reviews analyzed - **Confidence:** Low (0.2/1.0) - **App Store ID (iOS):** 6780036699 - **Bundle ID:** com.evelaina.derrick - **Data Window:** Analysis based on signals collected up to 2026-09-18 ## Executive Snapshot **What it is:** Derrick is a specialized rotation calendar for oilfield workers, providing offline-first scheduling and financial tracking on iOS. **Why users hire it:** Oilfield workers face scheduling drift in generic calendar apps, and Derrick removes this friction by providing rotation-specific logic that stays accurate for years. ## App DNA (Features & Intent) - **[Differentiator] Rotation Calendar:** Customizable on/off day scheduling for oilfield hitches with support for specific patterns like 14/14 or 28/28. * *User Intent:* Users value self-expression and personalized experiences. - **[Differentiator] Crew Pass:** QR code and text-based rotation sharing for team members or family to import schedules in one tap. - **[Differentiator] Printable PDF Export:** Generates a single-page annual view of the rotation schedule optimized for paper printing. ## Market Position {#market-position} Derrick serves a specialized productivity niche, maintaining a 4.76 rating across 21 reviews. The one-time purchase model positions the app as a professional utility rather than a subscription-based service, differentiating it from generic calendar competitors. ## Monetization Strategy - **Model:** Freemium - **Tiers:** Free version with core calendar and sharing tools, Pro version at approximately $29.99 (one-time purchase) - **Analysis:** Monetization relies on a one-time non-consumable purchase to unlock advanced planning and financial tracking features, avoiding recurring subscription fatigue. ## SWOT Analysis {#swot} **Core Strengths:** - Offline-first architecture ensures utility on remote rigs - Crew Pass sharing drives organic crew-based acquisition - One-time purchase model removes recurring subscription friction **Growth Levers:** - Expand financial tracking to include tax-specific reporting - Localized marketing in high-activity oilfield regions ## What's New - **Latest (v1.4.1, 1 weeks ago):** Version 1.4.1 contains no functional changes; update limited to new App Store screenshots and preview video. ## App Momentum (Maintenance) {#momentum} - Updated App Store screenshots and previews. - Maintains stable offline-first core functionality. > **Cadence:** 2 total versions · 1 majors in last 6 months · 10 days since last update · 13 days avg between updates ## The "So What?" (Strategic Takeaway) {#so-what} Derrick: Oilfield Rotation is a productivity app that is free with in-app purchases. It holds a 4.76/5 rating from 21 reviews. > **Bottom Line:** Derrick maintains a strong niche position by solving rotation drift, but the lack of active feature expansion leaves the app vulnerable to generic calendar updates. Prioritizing user feedback collection will clarify whether financial tracking or scheduling accuracy is the primary driver for Pro-tier conversion. **Best for:** Oilfield workers who require precise, offline-capable scheduling tools to manage complex hitch rotations and financial planning. ### PM Action Plan (Next Best Moves) - [ ] [INVEST] Implement in-app feedback prompts because sentiment data is currently missing → identify top user pain points ### Outlook: Stable The market for specialized productivity tools remains stable, but Derrick must transition from maintenance to active iteration to prevent generic calendar apps from absorbing its niche. If the developer does not address the lack of user feedback, the app risks stagnating while competitors add rotation-specific features. - ⚪ The latest release focuses on marketing assets rather than functional expansion, indicating a maintenance-mode cadence for the core calendar engine. ## Key Metrics Summary | Metric | Value | | :--- | :--- | | Overall Rating | 4.76/5 | | Total Reviews | 21 | | Confidence | Low | | Pricing Model | Freemium | | Platforms | iOS | | Key Features | 3 analyzed | | Outlook | Stable | ## Competitor Comparison | App | Rating | Sentiment | Developer | | :--- | :--- | :--- | :--- | | **Derrick: Oilfield Rotation** (this app) | 4.76/5 | N/A | Vytautas Jazbutis | | [ChatGPT](https://marlvel.ai/apps/chatgpt) | 4.8/5 | n/a | OpenAI OpCo, LLC | | [Clean Swell](https://marlvel.ai/apps/clean-swell) | 4.0/5 | n/a | Ocean Conservancy | | [HitWave](https://marlvel.ai/apps/ciendor-applications-hitwave) | 2.6/5 | Mixed | Ciendor Holdings Corp. LTD | | [Paper: Sketch, Draw & Create](https://marlvel.ai/apps/paper-sketch-draw-create) | 4.6/5 | N/A | Evernote Corporation | | [Perplexity - AI Search & Chat](https://marlvel.ai/apps/perplexity-ai-search-chat) | 4.8/5 | Mixed | Perplexity AI, Inc. | ## Company Profile - **Developer:** Vytautas Jazbutis - **Website:** [https://evelaina.com/derrick/terms](https://evelaina.com/derrick/terms) ## Data Sources & Links - **App Store:** [View on Apple Store](https://apps.apple.com/us/app/derrick-oilfield-rotation/id6780036699?uo=4) - **Dev Site:** [Official Website](https://evelaina.com/derrick/terms) - **Sources:** Developer website content, App store metadata. ## Related Intel Reports - [*ChatGPT*](https://marlvel.ai/apps/chatgpt) (OpenAI OpCo, LLC) · 4.8/5 Rating - [*Clean Swell*](https://marlvel.ai/apps/clean-swell) (Ocean Conservancy) · 4.0/5 Rating - [*HitWave*](https://marlvel.ai/apps/ciendor-applications-hitwave) (Ciendor Holdings Corp. LTD) · 2.6/5 Rating - [*Paper: Sketch, Draw & Create*](https://marlvel.ai/apps/paper-sketch-draw-create) (Evernote Corporation) · 4.6/5 Rating - [*Perplexity - AI Search & Chat*](https://marlvel.ai/apps/perplexity-ai-search-chat) (Perplexity AI, Inc.) · 4.8/5 Rating - [*ScreenZen- Screen Time Control*](https://marlvel.ai/apps/screenzen-screen-time-control) (ScreenZen LLC) · 4.8/5 Rating | Excellent Sentiment - [*SpaceDesk App*](https://marlvel.ai/apps/spacedesk-app) (Hawsabah) · N/A Rating - [*VPN 360: Fast & Secure Proxy*](https://marlvel.ai/apps/co-infinitysoft-vpn360) (Pango GmbH) · 4.5/5 Rating - [*VPN - Super Unlimited Proxy*](https://marlvel.ai/apps/vpn-super-unlimited-proxy) (Mobile Jump Pte Ltd) · 4.7/5 Rating | Excellent Sentiment - [*한음달-한국인에게 꼭 맞는 음력달력, 캘린더*](https://marlvel.ai/apps/app--103) (YunaSoft Inc.) · 4.6/5 Rating ## Frequently Asked Questions {#faq} ### Is Derrick suitable for my specific oilfield rotation? Derrick supports common patterns like 14/14, 7/7, and 28/28, as well as custom on/off schedules, making it highly adaptable to most oilfield hitches. ### Does Derrick require an internet connection to view my schedule? No, Derrick is designed for offline use, ensuring your schedule remains accessible on remote rigs or at sea without needing a data connection. ### How does Derrick compare to using a standard calendar app? Standard calendars often suffer from day-drift over long periods; Derrick uses specialized rotation logic to keep your ON and OFF days accurate for years. ## Methodology {#methodology} This report was generated by Marlvel.ai's 5-stage AI intelligence pipeline: 1. **Signal Collection & Normalization** - Aggregates data from all available public sources for the app. Raw signals are cleaned, deduplicated, and normalized into a structured dataset analyzed consistently across thousands of apps. 2. **Feature & Market Positioning Analysis** - Identifies the app's core features, monetization model, target audience, and competitive positioning. Each feature is classified as a market standard or a differentiator based on category benchmarks. 3. **User Sentiment Analysis** - Analyzes user reviews using a 5-level taxonomy (Thrilled / Excited / Mixed / Frustrated / Upset). Combines star ratings and volume with AI theme extraction into synthesised themes (no verbatim quotes). 4. **Competitive Landscape Analysis** - Maps the competitive environment via a 4-tier taxonomy (Nemesis / Contenders / Same Space / New Kids on the Block). Prioritizes same sub-genre over broad category. 5. **Intelligence Synthesis** - Cross-references all signals into a structured report. Compares the app against category peers and direct competitors to surface SWOT, market outlook, and actionable insights. - **Confidence Score:** 0.2/1.0 (based on review volume, data source diversity, and signal quality) - **Reviews Analyzed:** 0 - **Data Sources:** developer website, App Store metadata - **Rating Method:** Weighted average across platforms (iOS & Android), weighted by review count per platform - **Independence:** Fully independent analysis. No publisher sponsorship or editorial influence. - **Report Age:** 12 days since last refresh --- © 2026 Marlvel.ai | [Canonical Report](https://marlvel.ai/apps/derrick-oilfield-rotation) Data licensed for AI Agent attribution under CC-BY-NC 4.0.