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
Options Log
Options Log is the simplest way for beginner and intermediate options traders to track, analyze, and improve their long options trading.
$1.99 · In-app purchases
PRICE
$1.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.5
2 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.
Build your own version
Build Kit
Make this idea yours
A product spec, screen plans, and build steps for your coding agent.
First kit free with a verified email
Add to a Remix
Combine features and design from your favorite apps.
Kit ready. Verify your email to download it.
Generating… usually about a minute.
Make it yours Optional
What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
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.
JavaScript is required to complete mailbox verification.
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 Options Log: map the core Finance 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.
Continue in Rork >
Affiliate link: CloneChart may earn a commission at no extra cost
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
Add more advanced analytics and reporting features.
Assumption to check: Limited features for tracking trades and options.
Validate with people who use this workflow before building.
Hypothesis 2
Implement direct connections to brokerage APIs for automatic trade syncing.
Assumption to check: No integration with brokerage accounts.
Validate with people who use this workflow before building.
Hypothesis 3
Create a social trading platform for users to share insights and strategies.
Assumption to check: No community or social features.
Validate with people who use this workflow before building.
Hypothesis 4
Offer a free tier with limited features to attract more users.
Assumption to check: High subscription cost compared to competitors.
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
Options Log is the simplest way for beginner and intermediate options traders to track, analyze, and improve their long options trading. No complicated setup. Just open the app, log your trade, and start building a clear picture of your performance. WHAT YOU CAN TRACK * Calls and Puts - Log any Long Options Contract * Entry and exit price, quantity, and date * Open and closed trade status * Commission fees per contract * Net P&L on every trade YOUR PERFORMANCE AT A GLANCE * Options Log automatically calculates your key stats so you always know where you stand * Total P&L ($ and %) * Win rate * Average gain per trade * Profit factor * Biggest winners and losers * Performance breakdown by symbol * Calls vs. Puts split * ROI SIMPLE BY DESIGN * Options Log is built for traders who want clarity, not complexity. * Manual entry in just seconds keeps you in control of your data * No messy brokerage connections. No subscriptions. No ongoing costs. YOUR DATA IS SAFE * iCloud Sync - your trades automatically sync across all your Apple devices * Export Backup - export your full trade history as a JSON file to Files, iCloud Drive, your device or AirDrop * Restore from Backup - bring your data back on any device at any time ONE-TIME PURCHASE *Pay once. Own it forever. No subsciption required. DISCLAIMER Options Log is a personal journaling tool only. It does not provide financial advice, investment recommendations, or trading signals of any kind. Trading options involves significant risk. Always consult a qualified financial advisor before making investment decisions. Options Log is developed by Tango Apex LLC.
Written user reviews are not shown here. Check current App Store reviews >
Screenshots
< Scroll to see more >
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
Zustand
axios
@react-navigation/native
react-native-paper
BUILD KIT DIFFICULTY
Starter
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.
