App Overview

Crew Rest icon

Crew Rest

Serge Ostrowsky · Utilities

CrewRest has been rebuilt as a new app: CrewRest+.

$2.99 · In-app purchases

PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.4
89 ratings · Top 30%

Evidence scope: No current overall US chart position is available. Category-chart positions shown in discovery are a separate scope. Revenue is a directional model estimate, not verified earnings.

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Build Kit

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A product spec, screen plans, and build steps for your coding agent.

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What's included15 files

A product spec, phased build plan, differentiation notes, and screen references.

  • START_HERE
  • AGENTS
  • EVIDENCE
  • SPEC
  • BUILD_PLAN
  • DIFFERENTIATION
  • skills/
  • screens/
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Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.

Feature spec

Goal: Send a clear invoice after finishing a job.

  • Add a client, line items, a due date, and payment instructions.
  • Preview the total before exporting a PDF.
  • Keep an editable draft if export fails.

Screen plan

Invoice editor: Client at the top, editable line items in the middle, total and preview action at the bottom.

States: Empty draft, validation errors beside each field, exporting, and a retry action that preserves the draft.

Differentiate and validate

Hypothesis: Contractors need faster repeat invoices more than more templates.

First experiment: Test duplicating a previous job with five contractors. Watch where they hesitate before expanding the feature set.

The full kit adds a phased build plan, evidence notes, tool prompts, and implementation guidance. It is a plan for your coding agent, not a finished app.

Usage: Mechanics are fair game; never reuse the original name, branding, assets, or verbatim copy.

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Quick prompt

> SELECT BUILD PLATFORM:

Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.

// RORK SYSTEM PROMPT
Rork plan preview for Crew Rest: map the core Utilities workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
            

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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

These are generated suggestions, not verified review quotations. Check current App Store reviews and speak with users before treating a possible gap as a requirement.

Hypothesis 1

Provide customizable settings for different airline regulations.

Assumption to check: Calculating rest periods can be complex based on regulations.

Validate with people who use this workflow before building.

Hypothesis 2

Allow users to edit or delete past calculations.

Assumption to check: Limited historical data management.

Validate with people who use this workflow before building.

Hypothesis 3

Integrate social sharing features.

Assumption to check: No sharing options for results.

Validate with people who use this workflow before building.

Hypothesis 4

Offer subscription model for ongoing support and updates.

Assumption to check: One-time purchase may deter users.

Validate with people who use this workflow before building.

App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

CrewRest has been rebuilt as a new app: CrewRest+. CrewRest+ includes enhanced features, improved usability, and ongoing development. You can download CrewRest+ on the App Store to access the latest version of the app. CrewRest remains available for existing users and continues to function as before. However, no new features will be added to this version. This application uses Apple's standard Terms of Use (EULA) : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ --- CrewRest is an aviation-focused tool designed to help flight crew plan and visualize rest and service periods during duty. It provides a clear and practical timeline representation to support operational understanding and decision-making. The app works fully offline and requires no account. "Crew Rest" is intended for Crews around the world who need to divide a specific amount of time in different rest / work periods. Typically, it is used by Flight crews (Pilots and Cabin Crew) on long haul flights. You give the app the time range available to your crew for these rests / work periods and it generates a timetable of the different times at which these periods will start and end depending on the sequencing you have chosen. For anyone reading this with no knowledge of airline operations, don't worry, crew rests are normal, scheduled and only take place on long haul flights in order to ensure a perfect level of alertness upon arrival ! NOBODY is asleep at the controls ! ! Fellow crewmembers enjoy and treasure that sacred rest!

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Screenshots

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Build scope

Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.

Define the first version

Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.

Set boundaries

Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.

Check the hard parts

Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.

SUGGESTED BUILD STACK
React Native
Expo
Moment.js
React Navigation
React Native Clipboard
Expo Sharing
BUILD KIT DIFFICULTY
Starter

From the Build Kit assessment.

A reliable timeline needs an agreed scope and a technical check. Ask your agent to estimate the phases in BUILD_PLAN.md after that review.