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
Sincerely: Vent & Confess
Need to unburden your soul? Feeling lost and looking for support? Sincerely is your anonymous haven to share, connect, and heal.
Free · In-app purchases
PRICE
Free
In-app purchases
BUSINESS MODEL
Freemium
No overall Grossing estimate available
RATING
★ 4.7
36,053 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
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A product spec, screen plans, and build steps for your coding agent.
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Add to a Remix
Combine features and design from your favorite apps.
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What should your app do differently? Your note travels with the kit so your coding agent builds around your idea.
What's included18 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 Sincerely: Vent & Confess: 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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App evidence
Original App Store material. Ratings and screenshots describe the existing app, not proof of demand for your version.
Screenshots
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App Store description
Need to unburden your soul? Feeling lost and looking for support? Sincerely is your anonymous haven to share, connect, and heal. Write your heart out in heartfelt letters, and receive caring responses from a supportive community. You're never alone. Connect with others who understand. Find solace and offer guidance in a judgment-free space. Why You'll Love It: • Write letters to get things off your chest. • Receive 3 letters every night at 8pm. • Respond to strangers and offer support. • Send virtual hugs to uplift others. • Track your impact with helpful data streaks. • Make friends and continue conversations. • Monitor your emotional well-being with a mood tracker and calendar. • Get instant support and answers from our AI chat. Ready to find your safe space? Download Sincerely today. Terms of Service: https://sincerelyapp.notion.site/Sincerely-Terms-of-Service-v04-01-2024-de28f29dc48e44a1b9bcf5e179541ccf Privacy Policy: https://sincerelyapp.notion.site/Sincerely-Privacy-Policy-v02-26-2024-d79628c1700d4d069e7d301671f88189
Written user reviews are not shown here. Check current App Store reviews >
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
Allow users to customize templates and themes for their journal entries.
Assumption to check: Limited customization options for journaling experience
Validate with people who use this workflow before building.
Hypothesis 2
Implement better search and category filters to improve entry discoverability.
Assumption to check: Difficulty in discovering new entries
Validate with people who use this workflow before building.
Hypothesis 3
Introduce options for users to follow each other and interact with entries.
Assumption to check: Lack of community engagement features
Validate with people who use this workflow before building.
Hypothesis 4
Clearly communicate the benefits of premium features and provide a straightforward purchase flow.
Assumption to check: In-app purchase confusion
Validate with people who use this workflow before building.
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-native-image-picker
BUILD KIT DIFFICULTY
Expert
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.
