App Overview

KnockOut HD Pro-Photo Editor icon

KnockOut HD Pro-Photo Editor

RETOUCH AI PTE.LTD. · Photo & Video

The easy way to cutout(especially complex hair edge cutout) and composite photos, change background and apply effects to your photos.

$1.99 · In-app purchases

PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
4.5
3,188 ratings · Top 15%

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.

First kit free with a verified email

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Combine features and design from your favorite apps.

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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/
Preview a sample Build Kit No email needed

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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Free quick prompt For a smaller starting point

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 KnockOut HD Pro-Photo Editor: 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 range of free filters to enhance user engagement.

Assumption to check: Limited filter options without upgrading

Validate with people who use this workflow before building.

Hypothesis 2

Optimize app performance for a smoother experience across all devices.

Assumption to check: Inconsistent performance on older devices

Validate with people who use this workflow before building.

Hypothesis 3

Provide better onboarding and tutorials for complex features.

Assumption to check: Steep learning curve for advanced editing tools

Validate with people who use this workflow before building.

Hypothesis 4

Introduce a one-time purchase option alongside subscriptions to cater to different user preferences.

Assumption to check: Subscription model may deter casual users

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

The easy way to cutout(especially complex hair edge cutout) and composite photos, change background and apply effects to your photos. *MULTIPLE CUTOUT TOOLS -The automatic cutout tool: You just need to circle the object that you want to cut out, make a sticker out of any photo easily! -Manually selection tools: Lasso, instant alpha, eraser, a lot of manual tools to cutout if you are not satisfied with the result of the automatic cutout tool. -The new "Hair Refine" and "Edge Refine" tools, offering you a first glimpse of how much easier it could be to select hair, fur and other fine details in an image. *100+ FILTERS & EFFECTS There are over 100 filters and effects to make your photos unique! *23 BLEND MODES *POWERFUL PHOTO EDITOR *TRANSPARENT PNG AND COLORFUL BACKGROUND JPG SUPPORT Knockout Plus subscription - You can subscribe for new weekly updates (every week, new images will be available for download) - Subscriptions are from $2.99 USD weekly, $3.99 USD monthly and $19.99 USD annually* - Payment will be charged to iTunes Account at confirmation of purchase - You will be able to color all available images for the duration of the subscription - Subscription automatically renews for the same price and duration period as the original "one week"/"one month"/"one year" package unless auto-renew is turned off at least 24-hours before the end of the current period - Account will be charged for renewal within 24-hours prior to the end of the current period at the cost of the chosen package (weekly, monthly or yearly package) - Subscriptions may be managed by the user and auto-renewal may be turned off by going to the user's iTunes Account Settings after purchase - No cancellation of the current subscription is allowed during active subscription period - You may cancel a subscription during its free trial period via the subscription setting through your iTunes account. This must be done 24 hours before the end of the subscription period to avoid being charged. Please visit http://support.apple.com/kb/ht4098 for more information - You may turn off the auto-renewal of your subscription via your iTunes Account Settings. However, you are not able to cancel the current subscription during its active period - Any unused portion of a free-trial period, will be forfeited when the user purchases a Knockout Plus subscription Links to our Terms of Service and Privacy Policy can be found below Privacy Policy:http://www.godimage.mobi/policy Terms of Use: http://www.godimage.mobi/terms

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.

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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.