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.
App Overview
Ta-Duo: Surprise Gift Box
Ta-Duo turns your iPhone Duo into a gift box you can hand to someone
$2.99 · In-app purchases
PRICE
$2.99
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 included
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.
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
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Ta-Duo turns your iPhone Duo into a gift box you can hand to someone. Choose what's inside, write a few words on the lid, close the phone, and give it to them. The moment they unfold it, the box opens. Make Them Smile: Ask the big question with "Will you marry me?" on the lid and a ring waiting inside. Or give them a piece of jewelry on velvet, a music box that plays its tune, a box of roses, or chocolates with a little note under each one. Cheer Them Up: For a hard week or a big win. Hand them an award plaque with their own title, like "Best Boss Ever", a fortune cookie with your own fortune, a scratch card to scratch, or a jar full of compliments. Make Them Scream: A Halloween box with something waiting inside. A fake spider, a ghost or a jack-in-the-box jumps out across the whole screen, and a glitter bomb goes off when they open it. Have your camera ready. Every Gift Has Its Box: A carved walnut music box, a florist's box for the roses, a red lacquer box for the fortune, a trophy case for the plaque, and a haunted crate or a black coffin for the scares. Make It Yours: Write your message on the lid and sign it. Choose the velvet color, the metal, the shape of the box and its decoration, from a satin ribbon to your own monogram. Made for the Fold: When the phone is closed, the cover shows only the box, with the camera dressed up as a jewel. Unfold it, and the gift is revealed. On other iPhones, a shake opens the box. Just for Fun: No ads. No subscriptions. No in-app purchases. Download it once and start surprising people.
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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.
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
Not assessed in a Build Kit yet.
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.
