App Overview

KaleidoScope FilterCam icon

KaleidoScope FilterCam

HIROFUMI MARUO · Photo & Video

This app allows you to take photos using the kaleidoscope filter and 27 types of art filters.

$1.99 · In-app purchases

PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
1.0
1 ratings · Below Average

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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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 KaleidoScope FilterCam: map the core Photo & Video 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

Offer a wider variety of unique filters and effects.

Assumption to check: Limited filter options compared to competitors

Validate with people who use this workflow before building.

Hypothesis 2

Optimize image processing for better performance.

Assumption to check: Poor performance with large images

Validate with people who use this workflow before building.

Hypothesis 3

Implement batch editing to process multiple images at once.

Assumption to check: Lack of batch editing features

Validate with people who use this workflow before building.

Hypothesis 4

Add cloud backup feature for user edits.

Assumption to check: No cloud backup for edited images

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

This app allows you to take photos using the kaleidoscope filter and 27 types of art filters. ・When launched, the demo screens of various filters are split into 4 screens and displayed. ・Tapping the numbers 1 to 4 on the navigation bar will display the demo screens of each filter. ・Tapping the small filter screen will launch the camera using that filter. You can see the scenery you normally see through the kaleidoscope filter as if you were looking through a kaleidoscope. Tapping the shutter will take a picture of the beautiful kaleidoscope screen at that time. The other functions of the 27 types of camera are as follows. ・You can determine the focus and exposure positions by tapping the preview screen. ・Two markers, one for focus and one for exposure, are displayed at the tapped position. ・The markers can be dragged to separate positions. ・Depending on the type of filter, parameters such as filter strength can be adjusted. ・Use the pinch gesture to zoom. ・You can select high, medium, or low resolution. ・You can select the back camera or the face camera. (Only for models with face cameras) -Instant shutter and 2-second timer shutter are available. -Photos taken are stored in the camera roll and within the app. -Displays a list of photos taken. -Approximately 60 filters can be used to process images, including brightness adjustment, contrast, blur, sharpening, sepia, monochrome, edge detection, sketch, etc. -Photos taken can be posted to Facebook and X. *** This app uses GPUImage (Copyright (c) 2012, Brad Larson, Ben Cochran, Hugues Lismonde, Keitaroh Kobayashi, Alaric Cole, Matthew Clark, Jacob Gundersen, Chris Williams. All rights reserved.) as an open source. [Caution] This app does not provide any warranty for any reason.

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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
Zustand
react-navigation
expo-image-picker
expo-camera
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.