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.
one-song-a-day music diary, with no ads and no subscription.
$0.99 · In-app purchases
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.
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
A product spec, phased build plan, differentiation notes, and screen references.
Illustrative example: an invoice app for independent contractors. Your kit is tailored to the app you choose; this is not its generated content.
Goal: Send a clear invoice after finishing a job.
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.
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.
JavaScript is required to complete mailbox verification.
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Liltie — One Song a Day Diary: map the core Lifestyle workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
Preview ready. Verify your email to reveal and copy the full prompt.
JavaScript is required to complete mailbox verification. Return to this prompt preview.
Affiliate link: CloneChart may earn a commission at no extra cost
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
Assumption to check: Limited user engagement features
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Lack of customization options
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: No reminders for daily entries
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: Limited data backup options
Validate with people who use this workflow before building.
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
one-song-a-day music diary, with no ads and no subscription. Record the song that matched your mood today, a short note, and a mood wave, then look back through the calendar. ■ One song a day, no pressure Search → write a note → pick a mood step. That's all. One record per day means each song you keep is one that truly mattered. ■ Mood waves for the feeling Five steps from calm to intense, visualized as waves. The shape of the day at a glance. ■ Build your own flow Each recorded day becomes a single wave; together they form your personal flow. In the 7-day strip and calendar views, neighboring days share soft color gradients drawn from album artwork, and a gentle animation lets each day's mood resurface. Empty days can fill in with new waves anytime. ■ Monthly analytics A monthly overview of your mood flow, distribution by level, and most-played genre and artist. Open "See more" to browse every record from that month. ■ Natural Apple Music integration Connect Apple Music to search the catalog and quickly pick from songs you recently played. When not connected, iTunes Search provides the same search experience. ■ 30-second previews Preview the song right on the card. The LP gently rotates while the wave flows. ■ Share to Instagram Stories Send a record as a single composed card. Choose between palette (from album artwork), light, or dark backgrounds. ■ iCloud auto-sync No sign-up required. Apple ID-based sync across all your devices. Open a new device and pick up where you left off. ■ Open in external music apps Open any record in Apple Music · Spotify · YouTube Music in a single tap. Privacy • Liltie does not collect, transmit, or share any user data with external servers. All records are stored only on your device and within your own iCloud account. Requirements • iOS 18.0 or later • iPhone · iPad Contact: [email protected]
Written user reviews are not shown here. Check current App Store reviews >
Plan a focused first version with your coding agent. These are planning assumptions, not a delivery guarantee.
Choose one audience and one core workflow. Use the kit to agree on its screens, data, and acceptance criteria before building.
Decide which secondary features, integrations, and platform support can wait. Your version does not need to reproduce everything in the original.
Validate external services, specialist technology, data access, and ongoing costs for your chosen scope.
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.