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
Astor: AI Investment Advisor
Astor is an AI investment advisor that analyzes your portfolio, finds what's missing, and helps you make better decisions.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
329 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.
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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.
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 Astor: AI Investment Advisor: map the core Finance 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 more advanced AI algorithm to tailor recommendations to individual user profiles.
Assumption to check: Users may find investment recommendations overly generic or not personalized.
Validate with people who use this workflow before building.
Hypothesis 2
Add educational content and tools to help users understand investments better.
Assumption to check: Limited educational resources for beginner investors.
Validate with people who use this workflow before building.
Hypothesis 3
Redesign the subscription model to be more transparent and attractive to users.
Assumption to check: In-app purchase options may be unclear or unappealing.
Validate with people who use this workflow before building.
Hypothesis 4
Optimize backend processes and enhance server capabilities to handle high traffic.
Assumption to check: Performance issues during peak times with server responses.
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
Astor is an AI investment advisor that analyzes your portfolio, finds what's missing, and helps you make better decisions. Most tools automate your investments. Astor helps you understand them: what's moving, why it matters, and what you should actually do about it. With Astor Pro, you can: - Ask your AI investment advisor questions about your money, 24/7 - Receive a tailored financial plan with recommendations on what to do next - Connect all your financial accounts in one place - Get daily market recaps explaining what happened and how it relates to your holdings - Compare your portfolio's performance against major indexes like the S&P 500 Astor gives you a clear, unified view of your finances, so you can evaluate decisions with context instead of guesswork. — Disclaimer: Astor (Gaus, Inc.) is an SEC-registered investment advisor. Registration does not imply a specific level of skill or training. Astor provides non-discretionary advisory services — all investment decisions remain yours. All investments involve risk, including loss of principal. Past performance does not guarantee future results. Full disclosures: astor.app/legal License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
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.
SUGGESTED BUILD STACK
React Native
Expo
axios
react-query
@react-navigation/native
shadcn/ui
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.
