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
10th Step
Tenth Step nightly inventory app that was created by members to help simplify their daily inventory
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.8
3,118 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.
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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 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.
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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 10th Step: map the core Lifestyle 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 intuitive navigation system with clear indicators.
Assumption to check: Users find it difficult to navigate between different journal entries.
Validate with people who use this workflow before building.
Hypothesis 2
Focus on robust error handling and data validation.
Assumption to check: Some users report bugs when saving reflections.
Validate with people who use this workflow before building.
Hypothesis 3
Allow users to customize prompts and themes.
Assumption to check: Limited customization options for reflections.
Validate with people who use this workflow before building.
Hypothesis 4
Incorporate sharing options to allow users to share reflections with friends.
Assumption to check: Lack of social sharing features.
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
Tenth Step nightly inventory app that was created by members to help simplify their daily inventory. It doesn’t get easier than this. Reflect on ten yes or no questions at the end of your day to help you complete your 10th Step inventory. Inventories are saved and stored by date. Optional tool within the app lets you “track” how well you’re walking on the 12th Step beam over time, depending on how you answer each days questions. 1. Was I resentful? 2. Was I dishonest? 3. Did I promptly admit when I was wrong today? 4. Do I owe an apology? 5. Did I do or say something today out of fear? 6. Have I kept something to myself which should be discussed with another person at once? 7. Did I think today of what I could do for others? 8. Was I kind and loving towards all? 9. Did I reach out to someone in recovery today to see how they were doing? 10. Did I take the time to connect with my higher power through prayer or meditation today? Text boxes provide room for comments, explanations or insights. Optional 4 digit pass-code to protect your inventory answers from others who have access to your phone. Designed and paid for by sober members in recovery so the app would be available and free to download. This app is not authorized or approved or sponsored by AA. It was made by members for members. We hope it helps you on your journey in recovery.
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
Supabase
React Navigation
Zustand
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.
