App Overview

Snake Rules icon

Snake Rules

Andre Luiz Rodrigues Costa · Productivity

Snake Rules — Precise measurements from a single photo

$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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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 Snake Rules: 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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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

Integrate push notifications for task reminders.

Assumption to check: Lack of user engagement features like reminders or notifications

Validate with people who use this workflow before building.

Hypothesis 2

Allow users to customize task backgrounds and colors.

Assumption to check: Limited customization options for tasks and goals

Validate with people who use this workflow before building.

Hypothesis 3

Implement task sharing and collaboration tools.

Assumption to check: No collaborative features for sharing tasks

Validate with people who use this workflow before building.

Hypothesis 4

Add a dashboard for insights on task performance.

Assumption to check: Poor analytics on task completion rates

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

Snake Rules — Precise measurements from a single photo Snake Rules makes it easy to measure the length of snakes, lizards, and other animals using just a photo and a simple reference object. Whether you are a keeper, breeder, or enthusiast, you can obtain accurate measurements in seconds — all directly on your device and without collecting any personal data. How it works Take a top-down photo of your animal next to a reference object (a ruler, tape measure, phone, bank card, etc.). Mark the start and end of the reference object to set the scale. Add points along the animal’s body for precise measurement. Adjust points by dragging them for maximum accuracy. Save your results and organize them by individual animals. Everything happens on-device, securely and privately. Features • Accurate measurements using only a photo • Simple and intuitive point-marking system • Zoom and pan to refine precision • Real-time length display • Save and organize multiple animals • Growth tracking with visual charts • Export individual animals or all animals in PDF • Export CSV data for use in other apps • Import and restore animal data at any time • Works offline — no accounts, no tracking, no data collection • Full privacy: your photos and measurements never leave your device Designed for keepers, breeders, and reptile (or other animals) lovers. Track growth over time, maintain accurate records, and store all measurements in one place. Perfect for snakes, lizards, and any animal whose size can be estimated through a reference object. Privacy First Snake Rules does not collect, store, or transmit any personal information. All calculations and data remain entirely on your device.

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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.

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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.