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
No. 10: Full Confidence
Welcome to 10 Downing Street
$2.99 · In-app purchases
PRICE
$2.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.5
30 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 No. 10: Full Confidence: map the core Games 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
Include more game modes and challenges to keep players engaged.
Assumption to check: Limited gameplay variety can lead to boredom
Validate with people who use this workflow before building.
Hypothesis 2
Simplify the purchasing process with clearer item descriptions and benefits.
Assumption to check: In-app purchases can be confusing
Validate with people who use this workflow before building.
Hypothesis 3
Add friend comparisons and social sharing features.
Assumption to check: Leaderboard lacks social features
Validate with people who use this workflow before building.
Hypothesis 4
Implement rewarded ads that enhance rather than interrupt the experience.
Assumption to check: Ads can disrupt gameplay
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
Welcome to 10 Downing Street. You're the new Prime Minister of the United Kingdom in this satirical strategy game for people who think they could do better. Try not to get sacked. A crisis lands on your desk every month. Pretty much everyone is on strike. Your Chancellor has done something you're hoping the press don't find out about. The Daily Reckoning has turned. You have seconds to respond but every decision might please one faction and infuriate another. Four groups hold your fate: - Cabinet: Your inner circle. Lose them, lose control. - Backbenchers: Your own MPs. Several have started a WhatsApp group. - Media: They were briefly on your side. That was a different week. - Public: Patient, mostly. They remember the big decisions. Let any faction hit zero and it's over. A new Prime Minister inherits your mess and the world remembers every decision you made. FEATURES - 300+ political crises - Multi-part storylines where your choices echo forward - Timed decisions under pressure - General elections, second terms and escalating instability - Custom PMs - change your portrait, name and party colour - Each PM continues where the last one fell - The Queen of the Humber leadership challenge - Reshuffles to help you stay in power - PM history, records and portraits of your fallen leaders - The Daily Reckoning newspaper reacts to your every failure - Game Centre achievements - Optional Special Adviser Pack with impact previews, longer timer, crisis log and post-crisis briefings THE WORLD REMEMBERS Each Prime Minister continues where the last one fell. Decisions echo forward. A bad call from the first PM can land on your successor's desk. The longer Britain has been ungoverned, the harder it is to govern. Survive a term and face a general election. Win a majority and carry on into a second term, with harder crises, and a party that is starting to wonder if someone else might do it better. Lose and it's over. Britain moves on. It always does. HOW LONG WILL YOU LAST? Your record as PM will be remembered. The epitaphs are not kind. Your portrait will hang in a corridor no-one visits but you can do better than that. Maybe. A work of satire. All characters, crises, and political parties are entirely fictional. Any resemblance to actual governance is purely coincidental. Terms: https://sleepyboystudios.com/terms
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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
Zustand
React Navigation
Lottie for React Native
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.
