App Overview

Carrier Cal icon

Carrier Cal

David Valenzuela · Productivity

CarrierCal is the essential scheduling companion built specifically for USPS City Carriers NALC and Rural Carriers NRLCA

$0.99

PRICE
$0.99
No in-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
N/A
No ratings yet

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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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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> SELECT BUILD PLATFORM:

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

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

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App evidence

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

Screenshots

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App Store description

CarrierCal is the essential scheduling companion built specifically for USPS City Carriers NALC and Rural Carriers NRLCA. Track your color rotation, paydays, federal holidays, leave balances, and shift notes all in one clean, easy to read calendar.Built by a USPS carrier who knows the frustration of outdated breakroom printouts, CarrierCal puts your entire work life in your pocket. Clean, fast, and reliable.Key Features:COLOR ROTATION CALENDARYour NALC six day rotation, A F Brown Red Black Green Blue Yellow, or NRLCA relief day schedule is automatically calculated. Enter your branch or route once, and CarrierCal maps your entire schedule. No more guessing your NS days!PAYDAY ALERTSKnow exactly when your paycheck hits. Paydays are automatically marked on your calendar with optional alert strips so you never miss a direct deposit.FEDERAL HOLIDAY TRACKINGAll USPS observed federal holidays are pre loaded, including weekend shifted observances. Plan your time off with total confidence.SHIFT NOTES AND LOGSJot down pivots, VOMA details, and route changes directly on any day. Log discipline actions and unscheduled leave with full details, fully searchable by date.PHOTO PROOF DOCUMENTATIONAttach photos directly to any calendar day. Document route conditions, vehicle damage, safety concerns, or management interactions to protect your record.LEAVE MANAGEMENTTrack annual leave, sick leave, personal days, LWOP, FMLA, and administrative leave. See your historical balances at a glance and plan future requests.BRANCH LOCALIZED SCHEDULESSupports national NALC rotations plus local branch overrides for stations using custom color sequences. Your app will match what is posted in your station.CUSTOMIZABLE DISPLAYChoose between schedule codes or color blocks for non scheduled days. Adjust your look with light or dark mode, custom color overrides, and flexible month, week, or day views.

Written user reviews are not shown here. Check current App Store reviews >

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 a tutorial or help section to guide users through the calculation process.

Assumption to check: Users may find carrier rate calculation confusing without clear instructions.

Validate with people who use this workflow before building.

Hypothesis 2

Include analytics features that allow users to track their calculations over time.

Assumption to check: Lack of advanced features like historical data or analytics.

Validate with people who use this workflow before building.

Hypothesis 3

Allow users to customize forecast parameters and notifications.

Assumption to check: Limited customization options for load forecasts.

Validate with people who use this workflow before building.

Hypothesis 4

Integrate with popular calendar apps to streamline load management.

Assumption to check: No integration with other productivity tools or calendars.

Validate with people who use this workflow before building.

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
Zustand
react-navigation
react-native-paper
TypeScript
BUILD KIT DIFFICULTY
Intermediate

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.