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
GitJournal
GitJournal is an open source note taking / journaling app built with privacy and data portability in mind
$3.99 · In-app purchases
PRICE
$3.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.1
18 ratings · Below Average
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 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/
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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 GitJournal: 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
Provide more formatting and styling options for entries
Assumption to check: Limited customization options for journal entries
Validate with people who use this workflow before building.
Hypothesis 2
Implement a more intuitive navigation system for easier access
Assumption to check: Difficulty in navigating between entries
Validate with people who use this workflow before building.
Hypothesis 3
Optimize rendering and data loading for better performance
Assumption to check: Subpar performance with large entry lists
Validate with people who use this workflow before building.
Hypothesis 4
Introduce options for sharing entries with others or collaborating on journals
Assumption to check: Lack of collaboration 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
GitJournal is an open source note taking / journaling app built with privacy and data portability in mind. It stores all its notes in a standardised Markdown + YAML header format or plaintext. The notes are stored in a hosted Git Repo of your choice - GitHub / GitLab / Gitea / Gogs / Any Custom-provider. Features - - Offline First - All yours notes are available offline - No Account Required - Categorize your Notes with Folders - Open source / Free Software / FOSS - Can easily be extended and integrated with other Git tools - Can also be used to manage Hugo / Jekyll / Gatsby websites - No Ads Never need to import / export your notes, as you always have control of the data. Apps may come and go, but your notes will always be with you. Git has been chosen as a backend as self-hosting a Git server is much simpler than almost any other software, additionally there are already many commercial providers of Git. So you can choose who you want to trust with your notes. We currently don't support encrypting the notes, but it's something we're actively working on.
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
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zustand
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@supabase/supabase-js
BUILD KIT DIFFICULTY
Advanced
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.
