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
StarSavior
Long ago, the legendary Star Savior defeated the Void Star.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
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.
Build your own version
Build Kit
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A product spec, screen plans, and build steps for your coding agent.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included18 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.
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
Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
// RORK SYSTEM PROMPT
Rork plan preview for StarSavior: map the core Games 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
Implement a review system for users to share their experiences.
Assumption to check: Lack of user reviews and ratings, making it hard to trust the app
Validate with people who use this workflow before building.
Hypothesis 2
Introduce dynamic quests and regular content updates.
Assumption to check: Limited content variety in quests and battles
Validate with people who use this workflow before building.
Hypothesis 3
Ensure fair gameplay with balanced in-app purchases.
Assumption to check: Potential imbalance in in-app purchases affecting gameplay
Validate with people who use this workflow before building.
Hypothesis 4
Add an onboarding tutorial to explain game mechanics.
Assumption to check: Difficulty in understanding game mechanics for new 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
Long ago, the legendary Star Savior defeated the Void Star. Now, the Journey—a trial to inherit the great power he left behind—begins once more. Take on the Journey alongside star-powered girls and inherit the legacy of the Star Savior. A training RPG to raise a new shining light to illuminate the cosmos in an age where the stars are fading. StarSavior: Guide your Saviors through the star-kissed Journey. ■ A Journey with girls who wield the power of the stars You become the Captain of the Savior Party, tasked with leading the star-powered girls known as Saviors. Forge bonds with star-powered Saviors and lead them through the Journey—to inherit the legacy of the Star Savior. ■ Turn-based battles with cinematic skill animations Each Savior possesses unique abilities and traits. Combine their distinct skills and attributes with stunning visual effects to build the optimal party, and overcome formidable enemies through turn-based combat guided by your strategy as Captain. ■ The legacy of the Star Savior — and a new story Follow in the footsteps of the Star Savior and uncover a new tale. Experience a story where past and future, fate and bonds, intertwine. ■ Anime-style illustrations and 3D graphics The world of StarSavior comes alive through anime-style illustrations, paired with 3D visuals rendered in a distinct aesthetic. ■ Official Community ▶ Official Hompage: https://starsavior.com/intro ▶ Official YouTube: https://www.youtube.com/@StarSavior_EN ▶ Official X: https://x.com/StarSavior_EN ■ Recommended Specifications iOS 15 / RAM 8GB or higher ■ Optional Permissions - Notifications: Required to receive promotional and informational notifications. - Photos/Media/Files: Required to save screenshots.
Written user reviews are not shown here. Check current App Store reviews >
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
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axios
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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.
