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
HanDBase Database Manager
Powerful relational database manager for mobile devices
$9.99 · In-app purchases
PRICE
$9.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 3.8
99 ratings · Top 50%
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 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 HanDBase Database Manager: 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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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
Offer enhanced features like custom queries and data visualization.
Assumption to check: Limited functionality for complex databases.
Validate with people who use this workflow before building.
Hypothesis 2
Implement onboarding tutorials and guided setup.
Assumption to check: Steep learning curve for new users.
Validate with people who use this workflow before building.
Hypothesis 3
Optimize data handling and implement background processing.
Assumption to check: Performance issues with large databases.
Validate with people who use this workflow before building.
Hypothesis 4
Enhance file support for various formats like CSV, JSON.
Assumption to check: Limited export/import options.
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
Powerful relational database manager for mobile devices. Track anything! Shopping Lists,DVD Collections,Passwords,Prayer Lists,To Dos,Workouts,Recipes,Checkbook,Weight Loss,Auto Mileage Inventory,Surveys,Directories,Time/Billing CRM,Deliveries,Estimates Patient Lists,Billing Codes,Charge Capture Create and Edit Databases right on your iPhone 19 different field types Relational- link between different database tables Sorting,Filtering, and Customized Views Field level Encryption Desktop Connect- connect via web browser and load/save databases, import/export Integration w/ HanDBase Gallery-download over 2000 templates Support for photos/camera/gps/barcode scanning Custom Forms Designer available via in-app Purchase "HanDBase for iPhone is a very powerful and customizable database. There's really no competition to HanDBase, and given their long history and track record in the handheld world, HanDBase will be adopted quickly in businesses where custom databases are needed. At [Price], this app is a bargain." TUAW.com review "If you’re sick of buying [...] iPhone/Touch applications that don’t live up to their hype – then you should look at HanDBase" GearDiary.com review We are a world leader in the mobile database space and have compatible solutions (sold separately) for desktops, synchronization to programs like Microsoft Access, SQL Server, Filemaker, and most ODBC enabled apps. See our web site for more details and options. Please Note: The HanDBase database format does not support Unicode, so while English and most European languages are supported, other languages are not.
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
Zustand
React Navigation
@react-native-async-storage/async-storage
React Native Paper
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.
