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.
Set goals and build better habits without making life more complicated.
$2.99 · 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.
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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.
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Good fit for mobile-first iOS and Android prototypes with managed app scaffolding.
Rork plan preview for Simple Tracker: Goals: map the core Productivity workflow, choose the smallest differentiated feature set, define the data and monetization boundaries, then prototype the riskiest user journey first.
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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: Users often find it hard to manage multiple goals at once.
Validate with people who use this workflow before building.
Hypothesis 2
Assumption to check: Limited customization options for goal settings.
Validate with people who use this workflow before building.
Hypothesis 3
Assumption to check: Some users desire better visual progress tracking.
Validate with people who use this workflow before building.
Hypothesis 4
Assumption to check: No social sharing features.
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.
Set goals and build better habits without making life more complicated. Simple Tracker is a clean, private habit tracker designed for people who want to stay consistent without subscriptions, accounts, advertisements, or unnecessary complexity. Create the goals and habits that matter to you, mark each day complete with a tap, and see your progress build over time. Track exercise, reading, hydration, meditation, creative work, personal routines, or anything else you want to do consistently. SIMPLE DAILY TRACKING Quickly mark a goal complete and get on with your day. No complicated dashboards or social features. SEE YOUR WHOLE YEAR The year-at-a-glance view turns your daily progress into a clear visual record. Spot patterns, recognize streaks, and see how small actions add up over time. MONTHLY CALENDAR Simply tap a day to select it, and tap again to mark it complete. SIMPLE SCREENSHOTS Save monthly or yearly views with one tap, and admire your accomplishments. NOTES FOR EVERY DAY Add a private note to any date to record what happened, explain a missed day, or remember details that completion statistics cannot show. TRACK YOUR PROGRESS Summary statistics can be turned on or off for each goal. Easily track the following: • Total completed days • Current streak • Longest streak • Monthly completion totals CUSTOMIZE EACH GOAL Choose a color for each goal, set a weekly target, and decide how you want your statistics calculated. LIGHT AND DARK MODE Use the appearance that works best for you. Each goal can also have its own color, making each one easy to recognize at a glance. YOUR DATA STAYS YOURS Your goals, completion history, and notes are stored locally on your device. No account necessary. Export your data as a CSV file whenever you want to review it in spreadsheet software or perform your own analysis. You can also download a complete backup and restore it later, giving you greater control over your information and preserving your progress. ONE PURCHASE. NO SUBSCRIPTION. Pay once and use the complete app. There are no monthly fees, annual renewals, or subscription tiers. FEATURES • Unlimited habits and goals • Fast daily completion tracking • Year-at-a-glance progress view • Monthly calendar view • Current and longest streaks • Total completed-day statistics • Notes for individual dates • Weekly goal settings • Custom goal colors • Light and dark mode • CSV data export • Downloadable backups • Backup restoration • Local on-device storage • No account required • No subscription Simple enough to use every day. Detailed enough to keep for years.
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.