App Overview

Caterpillar Id USA East Coast icon

Caterpillar Id USA East Coast

Sunbird Images OHG · Reference

Based on David Wagner’s renowned Princeton field guide Caterpillars of Eastern North America, this exciting new app is the ultimate digital pocket guide for quickly and easily identifying the most common native caterp...

$4.99 · In-app purchases

PRICE
$4.99
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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What's included17 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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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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Rork plan preview for Caterpillar Id USA East Coast: map the core Reference 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 more detailed descriptions and images for each caterpillar.

Assumption to check: Limited species information and identification features

Validate with people who use this workflow before building.

Hypothesis 2

Implement offline caching for species information.

Assumption to check: No offline access to data

Validate with people who use this workflow before building.

Hypothesis 3

Add community features like user-submitted images and comments.

Assumption to check: Lack of user engagement features

Validate with people who use this workflow before building.

Hypothesis 4

Simplify the subscription process with clearer benefits.

Assumption to check: In-app purchase complexity

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

Based on David Wagner’s renowned Princeton field guide Caterpillars of Eastern North America, this exciting new app is the ultimate digital pocket guide for quickly and easily identifying the most common native caterpillar species in Eastern North America—and for keeping a personalized log of your sightings! Covering 576 species and featuring more than 1,200 superb color images, the app is also useful for identifying caterpillars in the whole of southern Canada, parts of the Pacific Northwest, and, at a generic level, in most of the United States west of the Mississippi. Focusing on the larger, commonly encountered caterpillars that are most popular with gardeners, naturalists, and children, the app is designed to be enjoyed by nature lovers, hikers, and families, as well as by field biologists, zoologists, and other professionals. Each of the 576 species is illustrated with 1 to 4 photos, with most of the main pictures showing the full-grown caterpillar, and other photos showing color variations and, for 383 species, the adult butterfly or moth as well. An abundance of information is given for each species, including taxonomy, description, occurrence, food, and additional interesting facts. All species are listed by their scientific and common names and can easily be compared by browsing according to their taxonomic classification. A simple identification key narrows down potential species and consists of a choice of 9 major morphological traits, including 42 sub-traits, ranging from color combinations to body features, such as tails, knobs, and hair. • Covers 576 caterpillar species • Features 1,216 superb color images • Offers 3 ways to sort and display species: gallery, A–Z, or taxonomic • Lists caterpillars by their common and scientific names • Allows you to compare caterpillars next to each other—up to 8 on an iPhone and 16 on an iPad • Enables you to log your sightings, make notes for each, and sort your list by place, date, group, and name • Plots sightings automatically on an editable map via GPS • Includes export function for sending each list to any email address as a CSV data file Once you download the app, no internet connection is needed—just get the app and get started! Visit our website for further information: http://sunbird.tv/de/sunbird-apps-ebooks/

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Screenshots

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Define the first version

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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
Axios
react-navigation
BUILD KIT DIFFICULTY
Advanced

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.