App Overview

StepMirror: Dance Practice icon

StepMirror: Dance Practice

Netflowers Inc. · Health & Fitness

Put the routine you are learning next to yourself, and dance.

$1.99

PRICE
$1.99
No 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 included16 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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Opportunities

AI-GENERATED OPPORTUNITY HYPOTHESES

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App evidence

Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.

App Store description

Put the routine you are learning next to yourself, and dance. StepMirror shows a reference video and your front camera on one screen at the same time. Drag the dividing line to change how much space each one gets. Push it all the way to the edge and the other one becomes a small floating window you can move anywhere. There are no layout menus - one line does it all. Line up several clips at once. The eight-count drill, the chorus, the full run - pick them all and they play in order. Leave it looping the one part you keep getting wrong, or loop the whole set and just keep going. On iPad it opens up properly: the playlist stays on the left, the reference and you sit side by side at close to full size, and every speed is one tap away. Stand it on the floor and dance. Slow the reference down to a quarter speed without the music dropping in pitch. Flip the reference left-to-right when you learned the steps facing your teacher. Flip yourself, or don't - your camera is mirrored by default, like a studio wall. Record what you see. Not a separate export, not a different crop - exactly the screen you were looking at, with the reference audio on it. Watch it back later, step through it frame by frame, and save it to Photos if you want to keep it. Everything stays on your device. No account, no upload, no ads, no subscription. You bring your own reference videos from your library or files - the app never sends them anywhere. - Reference video and front camera together, on one screen - Drag the divider: side by side, stacked, or picture-in-picture - Queue up several clips and play them back to back - Loop one clip, loop the whole list, or don't loop at all - Built for iPad: playlist always visible, both videos stay big - 0.25x / 0.5x / 0.75x / 1x, with pitch-corrected audio - Mirror the reference and yourself independently - Record the composed screen with the reference audio - A-B loop on the hard eight counts, per clip - Camera-only takes when you just want to check yourself - Frame-by-frame review of everything you recorded - Works without camera permission (playback still does everything) - One purchase. No subscription.

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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
BUILD KIT DIFFICULTY
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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.