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
gTasks Pro for Google Tasks
A SINGLE PURCHASE COVERS ALL YOUR IPHONE AND IPAD DEVICES.
$19.99 · In-app purchases
PRICE
$19.99
In-app purchases
BUSINESS MODEL
Paid
No overall Grossing estimate available
RATING
★ 4.6
1,245 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 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 gTasks Pro for Google Tasks: 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
Allow users to create custom tags and colors for tasks.
Assumption to check: Limited customization options for tasks and projects.
Validate with people who use this workflow before building.
Hypothesis 2
Implement shared projects and task assignments.
Assumption to check: Lack of collaborative features for team projects.
Validate with people who use this workflow before building.
Hypothesis 3
Enable offline mode with local storage for tasks.
Assumption to check: No offline access to tasks.
Validate with people who use this workflow before building.
Hypothesis 4
Improve navigation with clear back and forward buttons.
Assumption to check: Difficult to navigate between projects and tasks.
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
A SINGLE PURCHASE COVERS ALL YOUR IPHONE AND IPAD DEVICES. SYNC your tasks with Google/Gmail and across your Mac, iPhone & iPad devices. Never liked your tasks app? You’ll love this one :) MAIN FEATURES ● Sync your tasks with Google Tasks. ● Sync tasks between your iPhone & iPad devices. ● View your tasks and calendar events in one place. ● Keep your tasks organized with subtasks. ● Location based reminders such as when you leave your office. ● Set repeating tasks such as “Pay bills” every month. ● Universal app, designed both for iPhone and iPad. GOOGLE TASKS ● Naturally integrating into Google Calendar. ● No permanent internet connection required. The app will sync updated tasks as soon as an internet connection is available. ● Your tasks are backed up. ● Manage your tasks conveniently on your home/office PC, and have them synced to your iPhone/iPad and vice versa. ● Share tasks with your colleagues. Terms of use: http://www.katans.com/terms-of-use Privacy policy: http://www.katans.com/privacy-policy
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.
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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.
