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
CUStats Go - AI Usage Tracker
Know before you hit your Claude, Codex, Grok, Cursor, or Devin limit
$8.99 · In-app purchases
PRICE
$8.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 5.0
1 ratings · Top 5%
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 included16 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 CUStats Go - AI Usage Tracker: map the core Developer Tools 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
Provide more customizable charts and metrics.
Assumption to check: Limited customization options for statistics display
Validate with people who use this workflow before building.
Hypothesis 2
Add sharing options for users to share their stats.
Assumption to check: No social sharing features
Validate with people who use this workflow before building.
Hypothesis 3
Implement an onboarding tutorial to guide new users.
Assumption to check: Lack of user onboarding
Validate with people who use this workflow before building.
Hypothesis 4
Introduce a free trial period for premium features.
Assumption to check: Static pricing without trial options
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
Know before you hit your Claude, Codex, Grok, Cursor, or Devin limit. CUStats Go's pace metric predicts your weekly usage at reset, so you can ease off before the cutoff — not after. Privacy-first by design: your usage data stays on your device, your account credentials are stored only in the iOS Keychain, and there are no ads and no behavioral tracking. Track each provider's billing windows, monitor model-specific consumption, and stay informed with smart notifications and multi-account management. Grok uses the Weekly or Monthly window xAI reports; Cursor maps plan usage to the billing cycle and on-demand to Extra Usage when enabled; Devin covers both the app.devin.ai agent quota and the Devin IDE plan quota. Key highlights: - Home screen widgets in three sizes: small, medium, and large multi-account dashboard (widgets require iOS 17 or later). - Widgets update automatically in the background — no need to open the app. - Widgets omit usage windows a provider does not report instead of showing a misleading 0%. - Multi-account widget shows all connected accounts (up to 5) with per-account usage, pace, and reset times. - Real-time monitoring of Claude, Codex, Grok, Cursor, and Devin with live progress bars. - Pace Metric predicts your weekly usage at reset time. Know before you hit the limit. - Promotion awareness: see when 2× usage windows are active with visual indicators. - 7-day trend charts with session-level detail, prediction lines, and weekly reset indicators. - Unified live session view with hero header and inline cumulative and peak charts. - Color-coded statuses (Good, Caution, Critical, At Limit) clarify when to pause usage. - Pace status indicators: Healthy (under 90%), Risky (90-100%), Over (above 100%). - Smart notifications for configurable thresholds, reset alerts, weekly unused-usage reminders, and service status changes — including when Claude or Codex recovers; iOS checks Claude thresholds in the background (Focus-friendly). - Extra usage (overage) credit tracking for paid plans. - Built-in multi-account flow with numbered credential how-tos and secure Keychain storage. - Width-adaptive iPad navigation (side rail at 600pt+), plus iPhone portrait and landscape. - Local-first privacy: no ads, no behavioral tracking, no cloud syncing. Your usage data stays on-device, and credentials are kept in the iOS Keychain. Perfect for developers, researchers, and busy professionals who rely on Claude, Codex, Grok, Cursor, or Devin and need portable visibility.
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
Supabase
react-native-chart-kit
react-native-async-storage
expo-router
BUILD KIT DIFFICULTY
Intermediate
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.
