App Overview

California Freshwater Fishes icon

California Freshwater Fishes

I.M.D. Publicacion C.A. · Reference

another app in our north american wildlife app series...

$5.99 · In-app purchases

PRICE
$5.99
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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Build Kit

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

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What's included14 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 California Freshwater Fishes: 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 species.

Assumption to check: Limited species information leads to user frustration

Validate with people who use this workflow before building.

Hypothesis 2

Implement better filtering and search capabilities.

Assumption to check: Navigation can be confusing with many species

Validate with people who use this workflow before building.

Hypothesis 3

Offer a freemium model with basic features available for free.

Assumption to check: High cost for in-app purchases without clear value

Validate with people who use this workflow before building.

Hypothesis 4

Introduce social sharing and user contributions for species.

Assumption to check: Lack of user engagement features

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

another app in our north american wildlife app series... fishes are cold-blooded vertebrates that live in water and breathe dissolved oxygen through organs called gills. they are generally characterized by their size, shape, feeding habits, and water temperature preference (their habitat). the freshwater fishes of california app shows 111 species that are found (native or introduced) in the freshwaters of california. please note that some species, such as salmon or steelhead trout, may no longer be present upstream of dams that lack fish passage. the freshwater fishes of california present the identification criteria of each species and – if species within the same family have distinguishing features – these features are listed for easier identification. apart from these identification descriptions of each species, the distribution of the species is given, as well as any other names and high-resolution photos. a glossary of over 400 special terms related to fishes is included, as well as high-quality illustrations explaining the internal and external anatomy of fishes. comfortable search functions are also part of the stylish and intuitive user interface and allow you to search for fish names and also do fulltext search in the descriptive text.

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

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
Supabase
TypeScript
React Navigation
Zustand
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.